HStore (Hortonworks Data Platform Apache HBase Java API Reference)

java.lang.Object
- org.apache.hadoop.hbase.regionserver.HStore

All Implemented Interfaces:

ConfigurationObserver, PropagatingConfigurationObserver, Store, StoreConfigInformation

Direct Known Subclasses:

HMobStore
```
public class HStore
extends java.lang.Object
implements Store, StoreConfigInformation, PropagatingConfigurationObserver
```
A Store holds a column family in a Region. Its a memstore and a set of zero or more StoreFiles, which stretch backwards over time.
There's no reason to consider append-logging at this level; all logging and locking is handled at the HRegion level. Store just provides services to manage sets of StoreFiles. One of the most important of those services is compaction services where files are aggregated once they pass a configurable threshold.
Locking and transactions are handled at a higher level. This API should not be called directly but by an HRegion manager.

Field Summary

Fields
Modifier and Type	Field and Description
`static java.lang.String`	`BLOCK_STORAGE_POLICY_KEY`
`static java.lang.String`	`BLOCKING_STOREFILES_KEY`
`protected int`	`blocksize`
`protected int`	`bytesPerChecksum`
`protected CacheConfig`	`cacheConf`
`protected ChecksumType`	`checksumType` Checksum configuration
`static java.lang.String`	`COMPACTCHECKER_INTERVAL_MULTIPLIER_KEY`
`protected CellComparator`	`comparator`
`protected Configuration`	`conf`
`protected Encryption.Context`	`cryptoContext`
`static long`	`DEEP_OVERHEAD`
`static java.lang.String`	`DEFAULT_BLOCK_STORAGE_POLICY`
`static int`	`DEFAULT_BLOCKING_STOREFILE_COUNT`
`static int`	`DEFAULT_COMPACTCHECKER_INTERVAL_MULTIPLIER`
`static long`	`FIXED_OVERHEAD`
`protected MemStore`	`memstore`
`static java.lang.String`	`MEMSTORE_CLASS_NAME`
`protected HRegion`	`region`

Fields inherited from interface org.apache.hadoop.hbase.regionserver.Store
NO_PRIORITY, PRIORITY_USER

Constructor Summary

Constructors
Modifier Constructor and Description

protected HStore(HRegion region, ColumnFamilyDescriptor family, Configuration confParam)
Constructor

Constructors
Modifier	Constructor and Description
`protected`	`HStore(HRegion region, ColumnFamilyDescriptor family, Configuration confParam)` Constructor

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`void`	`add(Cell cell, MemStoreSizing memstoreSizing)` Adds a value to the memstore
`void`	`add(java.lang.Iterable<Cell> cells, MemStoreSizing memstoreSizing)` Adds the specified value to the memstore
`void`	`addChangedReaderObserver(ChangedReadersObserver o)`
`boolean`	`areWritesEnabled()`
`void`	`assertBulkLoadHFileOk(Path srcPath)` This throws a WrongRegionException if the HFile does not fit in this region, or an InvalidHFileException if the HFile is not valid.
`Path`	`bulkLoadHFile(byte[] family, java.lang.String srcPathStr, Path dstPath)`
`void`	`bulkLoadHFile(StoreFileInfo fileInfo)`
`void`	`cancelRequestedCompaction(CompactionContext compaction)`
`boolean`	`canSplit()` Returns whether this store is splittable, i.e., no reference file in this store.
`<any>`	`close()` Close all the readers We don't need to worry about subsequent requests because the Region holds a write lock that will prevent any more reads or writes.
`void`	`closeAndArchiveCompactedFiles()` Closes and archives the compacted files under this store
`java.util.List<HStoreFile>`	`compact(CompactionContext compaction, ThroughputController throughputController, User user)` Compact the StoreFiles.
`void`	`compactRecentForTestingAssumingDefaultPolicy(int N)` This method tries to compact N recent files for testing.
`protected void`	`completeCompaction(java.util.Collection<HStoreFile> compactedFiles)` It works by processing a compaction that's been written to disk.
`protected void`	`createCacheConf(ColumnFamilyDescriptor family)` Creates the cache config.
`org.apache.hadoop.hbase.regionserver.StoreFlushContext`	`createFlushContext(long cacheFlushId, FlushLifeCycleTracker tracker)`
`protected KeyValueScanner`	`createScanner(Scan scan, ScanInfo scanInfo, java.util.NavigableSet<byte[]> targetCols, long readPt)`
`protected StoreEngine<?,?,?,?>`	`createStoreEngine(HStore store, Configuration conf, CellComparator kvComparator)` Creates the store engine configured for the given Store.
`protected HStoreFile`	`createStoreFileAndReader(Path p)`
`StoreFileWriter`	`createWriterInTmp(long maxKeyCount, Compression.Algorithm compression, boolean isCompaction, boolean includeMVCCReadpoint, boolean includesTag, boolean shouldDropBehind)`
`void`	`deleteChangedReaderObserver(ChangedReadersObserver o)`
`void`	`deregisterChildren(ConfigurationManager manager)` Needs to be called to deregister the children from the manager.
`static long`	`determineTTLFromFamily(ColumnFamilyDescriptor family)`
`protected java.util.List<HStoreFile>`	`doCompaction(CompactionRequestImpl cr, java.util.Collection<HStoreFile> filesToCompact, User user, long compactionStartTime, java.util.List<Path> newFiles)`
`protected java.util.List<Path>`	`flushCache(long logCacheFlushId, MemStoreSnapshot snapshot, MonitoredTask status, ThroughputController throughputController, FlushLifeCycleTracker tracker)` Write out current snapshot.
`java.util.OptionalDouble`	`getAvgStoreFileAge()`
`long`	`getBlockingFileCount()` The number of files required before flushes for this store will be blocked.
`static int`	`getBytesPerChecksum(Configuration conf)` Returns the configured bytesPerChecksum value.
`CacheConfig`	`getCacheConfig()` Used for tests.
`static ChecksumType`	`getChecksumType(Configuration conf)` Returns the configured checksum algorithm.
`static int`	`getCloseCheckInterval()`
`ColumnFamilyDescriptor`	`getColumnFamilyDescriptor()`
`java.lang.String`	`getColumnFamilyName()`
`long`	`getCompactedCellsCount()`
`long`	`getCompactedCellsSize()`
`java.util.Collection<HStoreFile>`	`getCompactedFiles()`
`int`	`getCompactedFilesCount()`
`long`	`getCompactionCheckMultiplier()`
`double`	`getCompactionPressure()` This value can represent the degree of emergency of compaction for this store.
`CompactionProgress`	`getCompactionProgress()` getter for CompactionProgress object
`int`	`getCompactPriority()`
`CellComparator`	`getComparator()`
`RegionCoprocessorHost`	`getCoprocessorHost()`
`HFileDataBlockEncoder`	`getDataBlockEncoder()`
`FileSystem`	`getFileSystem()`
`MemStoreSize`	`getFlushableSize()`
`long`	`getFlushedCellsCount()`
`long`	`getFlushedCellsSize()`
`long`	`getFlushedOutputFileSize()`
`long`	`getHFilesSize()`
`HRegion`	`getHRegion()`
`long`	`getLastCompactSize()`
`long`	`getMajorCompactedCellsCount()`
`long`	`getMajorCompactedCellsSize()`
`java.util.OptionalLong`	`getMaxMemStoreTS()`
`java.util.OptionalLong`	`getMaxSequenceId()`
`java.util.OptionalLong`	`getMaxStoreFileAge()`
`long`	`getMemStoreFlushSize()`
`MemStoreSize`	`getMemStoreSize()`
`java.util.OptionalLong`	`getMinStoreFileAge()`
`long`	`getNumHFiles()`
`long`	`getNumReferenceFiles()`
`protected OffPeakHours`	`getOffPeakHours()`
`HRegionFileSystem`	`getRegionFileSystem()`
`RegionInfo`	`getRegionInfo()`
`ScanInfo`	`getScanInfo()`
`KeyValueScanner`	`getScanner(Scan scan, java.util.NavigableSet<byte[]> targetCols, long readPt)` Return a scanner for both the memstore and the HStore files.
`java.util.List<KeyValueScanner>`	`getScanners(boolean cacheBlocks, boolean isGet, boolean usePread, boolean isCompaction, ScanQueryMatcher matcher, byte[] startRow, byte[] stopRow, long readPt)` Get all scanners with no filtering based on TTL (that happens further down the line).
`java.util.List<KeyValueScanner>`	`getScanners(boolean cacheBlocks, boolean usePread, boolean isCompaction, ScanQueryMatcher matcher, byte[] startRow, boolean includeStartRow, byte[] stopRow, boolean includeStopRow, long readPt)` Get all scanners with no filtering based on TTL (that happens further down the line).
`java.util.List<KeyValueScanner>`	`getScanners(java.util.List<HStoreFile> files, boolean cacheBlocks, boolean isGet, boolean usePread, boolean isCompaction, ScanQueryMatcher matcher, byte[] startRow, byte[] stopRow, long readPt, boolean includeMemstoreScanner)` Create scanners on the given files and if needed on the memstore with no filtering based on TTL (that happens further down the line).
`java.util.List<KeyValueScanner>`	`getScanners(java.util.List<HStoreFile> files, boolean cacheBlocks, boolean usePread, boolean isCompaction, ScanQueryMatcher matcher, byte[] startRow, boolean includeStartRow, byte[] stopRow, boolean includeStopRow, long readPt, boolean includeMemstoreScanner)` Create scanners on the given files and if needed on the memstore with no filtering based on TTL (that happens further down the line).
`long`	`getSize()`
`long`	`getSmallestReadPoint()`
`MemStoreSize`	`getSnapshotSize()`
`java.util.Optional<byte[]>`	`getSplitPoint()` Determines if Store should be split.
`StoreEngine<?,?,?,?>`	`getStoreEngine()` Returns the StoreEngine that is backing this concrete implementation of Store.
`java.util.Collection<HStoreFile>`	`getStorefiles()`
`int`	`getStorefilesCount()`
`long`	`getStorefilesRootLevelIndexSize()`
`long`	`getStorefilesSize()`
`long`	`getStoreFileTtl()`
`static Path`	`getStoreHomedir(Path tabledir, RegionInfo hri, byte[] family)` Deprecated.
`static Path`	`getStoreHomedir(Path tabledir, java.lang.String encodedName, byte[] family)` Deprecated.
`long`	`getStoreSizeUncompressed()`
`TableName`	`getTableName()`
`long`	`getTotalStaticBloomSize()` Returns the total byte size of all Bloom filter bit arrays.
`long`	`getTotalStaticIndexSize()` Returns the total size of all index blocks in the data block indexes, including the root level, intermediate levels, and the leaf level for multi-level indexes, or just the root level for single-level indexes.
`boolean`	`hasReferences()`
`boolean`	`hasTooManyStoreFiles()`
`long`	`heapSize()`
`boolean`	`isPrimaryReplicaStore()`
`boolean`	`isSloppyMemStore()`
`boolean`	`needsCompaction()` See if there's too much store files in this store
`void`	`onConfigurationChange(Configuration conf)` This method would be called by the `ConfigurationManager` object when the `Configuration` object is reloaded from disk.
`void`	`postSnapshotOperation()` Perform tasks needed after the completion of snapshot operation.
`<any>`	`preBulkLoadHFile(java.lang.String srcPathStr, long seqNum)` This method should only be called from Region.
`java.lang.Long`	`preFlushSeqIDEstimation()`
`void`	`preSnapshotOperation()` Sets the store up for a region level snapshot operation.
`java.util.List<KeyValueScanner>`	`recreateScanners(java.util.List<KeyValueScanner> currentFileScanners, boolean cacheBlocks, boolean usePread, boolean isCompaction, ScanQueryMatcher matcher, byte[] startRow, boolean includeStartRow, byte[] stopRow, boolean includeStopRow, long readPt, boolean includeMemstoreScanner)` Recreates the scanners on the current list of active store file scanners
`void`	`refreshStoreFiles()` Checks the underlying store files, and opens the files that have not been opened, and removes the store file readers for store files no longer available.
`void`	`refreshStoreFiles(java.util.Collection<java.lang.String> newFiles)` Replaces the store files that the store has with the given files.
`void`	`registerChildren(ConfigurationManager manager)` Needs to be called to register the children to the manager.
`void`	`replayCompactionMarker(CompactionDescriptor compaction, boolean pickCompactionFiles, boolean removeFiles)` Call to complete a compaction.
`java.util.Optional<CompactionContext>`	`requestCompaction()`
`java.util.Optional<CompactionContext>`	`requestCompaction(int priority, CompactionLifeCycleTracker tracker, User user)`
`boolean`	`shouldPerformMajorCompaction()` Tests whether we should run a major compaction.
`void`	`startReplayingFromWAL()` This message intends to inform the MemStore that next coming updates are going to be part of the replaying edits from WAL
`void`	`stopReplayingFromWAL()` This message intends to inform the MemStore that the replaying edits from WAL are done
`boolean`	`throttleCompaction(long compactionSize)`
`long`	`timeOfOldestEdit()` When was the last edit done in the memstore
`java.lang.String`	`toString()`
`void`	`triggerMajorCompaction()`
`void`	`upsert(java.lang.Iterable<Cell> cells, long readpoint, MemStoreSizing memstoreSizing)` Adds or replaces the specified KeyValues.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - MEMSTORE_CLASS_NAME
```
public static final java.lang.String MEMSTORE_CLASS_NAME
```
    See Also:
    
    Constant Field Values
  - COMPACTCHECKER_INTERVAL_MULTIPLIER_KEY
```
public static final java.lang.String COMPACTCHECKER_INTERVAL_MULTIPLIER_KEY
```
    See Also:
    
    Constant Field Values
  - BLOCKING_STOREFILES_KEY
```
public static final java.lang.String BLOCKING_STOREFILES_KEY
```
    See Also:
    
    Constant Field Values
  - BLOCK_STORAGE_POLICY_KEY
```
public static final java.lang.String BLOCK_STORAGE_POLICY_KEY
```
    See Also:
    
    Constant Field Values
  - DEFAULT_BLOCK_STORAGE_POLICY
```
public static final java.lang.String DEFAULT_BLOCK_STORAGE_POLICY
```
    See Also:
    
    Constant Field Values
  - DEFAULT_COMPACTCHECKER_INTERVAL_MULTIPLIER
```
public static final int DEFAULT_COMPACTCHECKER_INTERVAL_MULTIPLIER
```
    See Also:
    
    Constant Field Values
  - DEFAULT_BLOCKING_STOREFILE_COUNT
```
public static final int DEFAULT_BLOCKING_STOREFILE_COUNT
```
    See Also:
    
    Constant Field Values
  - memstore
```
protected final MemStore memstore
```
  - region
```
protected final HRegion region
```
  - conf
```
protected Configuration conf
```
  - cacheConf
```
protected CacheConfig cacheConf
```
  - blocksize
```
protected final int blocksize
```
  - checksumType
```
protected ChecksumType checksumType
```
    Checksum configuration
  - bytesPerChecksum
```
protected int bytesPerChecksum
```
  - comparator
```
protected final CellComparator comparator
```
  - cryptoContext
```
protected Encryption.Context cryptoContext
```
  - FIXED_OVERHEAD
```
public static final long FIXED_OVERHEAD
```
  - DEEP_OVERHEAD
```
public static final long DEEP_OVERHEAD
```
- Constructor Detail
  - HStore
```
protected HStore(HRegion region,
                 ColumnFamilyDescriptor family,
                 Configuration confParam)
          throws java.io.IOException
```
    Constructor
    
    Parameters:
    
    region -
    
    family - HColumnDescriptor for this column
    
    confParam - configuration object failed. Can be null.
    
    Throws:
    
    java.io.IOException
- Method Detail
  - createCacheConf
```
protected void createCacheConf(ColumnFamilyDescriptor family)
```
    Creates the cache config.
    
    Parameters:
    
    family - The current column family.
  - createStoreEngine
```
protected StoreEngine<?,?,?,?> createStoreEngine(HStore store,
                                                 Configuration conf,
                                                 CellComparator kvComparator)
                                          throws java.io.IOException
```
    Creates the store engine configured for the given Store.
    
    Parameters:
    
    store - The store. An unfortunate dependency needed due to it being passed to coprocessors via the compactor.
    
    conf - Store configuration.
    
    kvComparator - KVComparator for storeFileManager.
    
    Returns:
    
    StoreEngine to use.
    
    Throws:
    
    java.io.IOException
  - determineTTLFromFamily
```
public static long determineTTLFromFamily(ColumnFamilyDescriptor family)
```
    Parameters:
    
    family -
    
    Returns:
    
    TTL in seconds of the specified family
  - getColumnFamilyName
```
public java.lang.String getColumnFamilyName()
```
    Specified by:
    
    getColumnFamilyName in interface Store
  - getTableName
```
public TableName getTableName()
```
    Specified by:
    
    getTableName in interface Store
  - getFileSystem
```
public FileSystem getFileSystem()
```
    Specified by:
    
    getFileSystem in interface Store
  - getRegionFileSystem
```
public HRegionFileSystem getRegionFileSystem()
```
  - getStoreFileTtl
```
public long getStoreFileTtl()
```
    Specified by:
    
    getStoreFileTtl in interface StoreConfigInformation
    
    Returns:
    
    Gets the cf-specific time-to-live for store files.
  - getMemStoreFlushSize
```
public long getMemStoreFlushSize()
```
    Specified by:
    
    getMemStoreFlushSize in interface StoreConfigInformation
    
    Returns:
    
    Gets the Memstore flush size for the region that this store works with.
  - getFlushableSize
```
public MemStoreSize getFlushableSize()
```
    Specified by:
    
    getFlushableSize in interface Store
    
    Returns:
    
    The amount of memory we could flush from this memstore; usually this is equal to Store.getMemStoreSize() unless we are carrying snapshots and then it will be the size of outstanding snapshots.
  - getSnapshotSize
```
public MemStoreSize getSnapshotSize()
```
    Specified by:
    
    getSnapshotSize in interface Store
    
    Returns:
    
    size of the memstore snapshot
  - getCompactionCheckMultiplier
```
public long getCompactionCheckMultiplier()
```
    Specified by:
    
    getCompactionCheckMultiplier in interface StoreConfigInformation
    
    Returns:
    
    Gets the cf-specific compaction check frequency multiplier. The need for compaction (outside of normal checks during flush, open, etc.) will be ascertained every multiplier * HConstants.THREAD_WAKE_FREQUENCY milliseconds.
  - getBlockingFileCount
```
public long getBlockingFileCount()
```
    Description copied from interface: StoreConfigInformation
    
    The number of files required before flushes for this store will be blocked.
    
    Specified by:
    
    getBlockingFileCount in interface StoreConfigInformation
  - getBytesPerChecksum
```
public static int getBytesPerChecksum(Configuration conf)
```
    Returns the configured bytesPerChecksum value.
    
    Parameters:
    
    conf - The configuration
    
    Returns:
    
    The bytesPerChecksum that is set in the configuration
  - getChecksumType
```
public static ChecksumType getChecksumType(Configuration conf)
```
    Returns the configured checksum algorithm.
    
    Parameters:
    
    conf - The configuration
    
    Returns:
    
    The checksum algorithm that is set in the configuration
  - getCloseCheckInterval
```
public static int getCloseCheckInterval()
```
    Returns:
    
    how many bytes to write between status checks
  - getColumnFamilyDescriptor
```
public ColumnFamilyDescriptor getColumnFamilyDescriptor()
```
    Specified by:
    
    getColumnFamilyDescriptor in interface Store
  - getMaxSequenceId
```
public java.util.OptionalLong getMaxSequenceId()
```
    Specified by:
    
    getMaxSequenceId in interface Store
    
    Returns:
    
    The maximum sequence id in all store files.
  - getMaxMemStoreTS
```
public java.util.OptionalLong getMaxMemStoreTS()
```
    Specified by:
    
    getMaxMemStoreTS in interface Store
    
    Returns:
    
    The maximum memstoreTS in all store files.
  - getStoreHomedir
```
@Deprecated
public static Path getStoreHomedir(Path tabledir,
                                               RegionInfo hri,
                                               byte[] family)
```
    Deprecated.
    
    Parameters:
    
    tabledir - Path to where the table is being stored
    
    hri - RegionInfo for the region.
    
    family - ColumnFamilyDescriptor describing the column family
    
    Returns:
    
    Path to family/Store home directory.
  - getStoreHomedir
```
@Deprecated
public static Path getStoreHomedir(Path tabledir,
                                               java.lang.String encodedName,
                                               byte[] family)
```
    Deprecated.
    
    Parameters:
    
    tabledir - Path to where the table is being stored
    
    encodedName - Encoded region name.
    
    family - ColumnFamilyDescriptor describing the column family
    
    Returns:
    
    Path to family/Store home directory.
  - getDataBlockEncoder
```
public HFileDataBlockEncoder getDataBlockEncoder()
```
    Returns:
    
    the data block encoder
  - refreshStoreFiles
```
public void refreshStoreFiles()
                       throws java.io.IOException
```
    Description copied from interface: Store
    
    Checks the underlying store files, and opens the files that have not been opened, and removes the store file readers for store files no longer available. Mainly used by secondary region replicas to keep up to date with the primary region files.
    
    Specified by:
    
    refreshStoreFiles in interface Store
    
    Throws:
    
    java.io.IOException
  - refreshStoreFiles
```
public void refreshStoreFiles(java.util.Collection<java.lang.String> newFiles)
                       throws java.io.IOException
```
    Replaces the store files that the store has with the given files. Mainly used by secondary region replicas to keep up to date with the primary region files.
    
    Throws:
    
    java.io.IOException
  - createStoreFileAndReader
```
protected HStoreFile createStoreFileAndReader(Path p)
                                       throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - startReplayingFromWAL
```
public void startReplayingFromWAL()
```
    This message intends to inform the MemStore that next coming updates are going to be part of the replaying edits from WAL
  - stopReplayingFromWAL
```
public void stopReplayingFromWAL()
```
    This message intends to inform the MemStore that the replaying edits from WAL are done
  - add
```
public void add(Cell cell,
                MemStoreSizing memstoreSizing)
```
    Adds a value to the memstore
  - add
```
public void add(java.lang.Iterable<Cell> cells,
                MemStoreSizing memstoreSizing)
```
    Adds the specified value to the memstore
  - timeOfOldestEdit
```
public long timeOfOldestEdit()
```
    Description copied from interface: Store
    
    When was the last edit done in the memstore
    
    Specified by:
    
    timeOfOldestEdit in interface Store
  - getStorefiles
```
public java.util.Collection<HStoreFile> getStorefiles()
```
    Specified by:
    
    getStorefiles in interface Store
    
    Returns:
    
    All store files.
  - getCompactedFiles
```
public java.util.Collection<HStoreFile> getCompactedFiles()
```
    Specified by:
    
    getCompactedFiles in interface Store
  - assertBulkLoadHFileOk
```
public void assertBulkLoadHFileOk(Path srcPath)
                           throws java.io.IOException
```
    This throws a WrongRegionException if the HFile does not fit in this region, or an InvalidHFileException if the HFile is not valid.
    
    Throws:
    
    java.io.IOException
  - preBulkLoadHFile
```
public <any> preBulkLoadHFile(java.lang.String srcPathStr,
                              long seqNum)
                       throws java.io.IOException
```
    This method should only be called from Region. It is assumed that the ranges of values in the HFile fit within the stores assigned region. (assertBulkLoadHFileOk checks this)
    
    Parameters:
    
    srcPathStr -
    
    seqNum - sequence Id associated with the HFile
    
    Throws:
    
    java.io.IOException
  - bulkLoadHFile
```
public Path bulkLoadHFile(byte[] family,
                          java.lang.String srcPathStr,
                          Path dstPath)
                   throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - bulkLoadHFile
```
public void bulkLoadHFile(StoreFileInfo fileInfo)
                   throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - close
```
public <any> close()
            throws java.io.IOException
```
    Close all the readers We don't need to worry about subsequent requests because the Region holds a write lock that will prevent any more reads or writes.
    
    Returns:
    
    the StoreFiles that were previously being used.
    
    Throws:
    
    java.io.IOException - on failure
  - flushCache
```
protected java.util.List<Path> flushCache(long logCacheFlushId,
                                          MemStoreSnapshot snapshot,
                                          MonitoredTask status,
                                          ThroughputController throughputController,
                                          FlushLifeCycleTracker tracker)
                                   throws java.io.IOException
```
    Write out current snapshot. Presumes snapshot() has been called previously.
    
    Parameters:
    
    logCacheFlushId - flush sequence number
    
    snapshot -
    
    status -
    
    throughputController -
    
    Returns:
    
    The path name of the tmp file to which the store was flushed
    
    Throws:
    
    java.io.IOException - if exception occurs during process
  - createWriterInTmp
```
public StoreFileWriter createWriterInTmp(long maxKeyCount,
                                         Compression.Algorithm compression,
                                         boolean isCompaction,
                                         boolean includeMVCCReadpoint,
                                         boolean includesTag,
                                         boolean shouldDropBehind)
                                  throws java.io.IOException
```
    Parameters:
    
    maxKeyCount -
    
    compression - Compression algorithm to use
    
    isCompaction - whether we are creating a new file in a compaction
    
    includeMVCCReadpoint - - whether to include MVCC or not
    
    includesTag - - includesTag or not
    
    Returns:
    
    Writer for a new StoreFile in the tmp dir.
    
    Throws:
    
    java.io.IOException
  - getScanners
```
public java.util.List<KeyValueScanner> getScanners(boolean cacheBlocks,
                                                   boolean isGet,
                                                   boolean usePread,
                                                   boolean isCompaction,
                                                   ScanQueryMatcher matcher,
                                                   byte[] startRow,
                                                   byte[] stopRow,
                                                   long readPt)
                                            throws java.io.IOException
```
    Get all scanners with no filtering based on TTL (that happens further down the line).
    
    Parameters:
    
    cacheBlocks - cache the blocks or not
    
    usePread - true to use pread, false if not
    
    isCompaction - true if the scanner is created for compaction
    
    matcher - the scan query matcher
    
    startRow - the start row
    
    stopRow - the stop row
    
    readPt - the read point of the current scan
    
    Returns:
    
    all scanners for this store
    
    Throws:
    
    java.io.IOException
  - getScanners
```
public java.util.List<KeyValueScanner> getScanners(boolean cacheBlocks,
                                                   boolean usePread,
                                                   boolean isCompaction,
                                                   ScanQueryMatcher matcher,
                                                   byte[] startRow,
                                                   boolean includeStartRow,
                                                   byte[] stopRow,
                                                   boolean includeStopRow,
                                                   long readPt)
                                            throws java.io.IOException
```
    Get all scanners with no filtering based on TTL (that happens further down the line).
    
    Parameters:
    
    cacheBlocks - cache the blocks or not
    
    usePread - true to use pread, false if not
    
    isCompaction - true if the scanner is created for compaction
    
    matcher - the scan query matcher
    
    startRow - the start row
    
    includeStartRow - true to include start row, false if not
    
    stopRow - the stop row
    
    includeStopRow - true to include stop row, false if not
    
    readPt - the read point of the current scan
    
    Returns:
    
    all scanners for this store
    
    Throws:
    
    java.io.IOException
  - getScanners
```
public java.util.List<KeyValueScanner> getScanners(java.util.List<HStoreFile> files,
                                                   boolean cacheBlocks,
                                                   boolean isGet,
                                                   boolean usePread,
                                                   boolean isCompaction,
                                                   ScanQueryMatcher matcher,
                                                   byte[] startRow,
                                                   byte[] stopRow,
                                                   long readPt,
                                                   boolean includeMemstoreScanner)
                                            throws java.io.IOException
```
    Create scanners on the given files and if needed on the memstore with no filtering based on TTL (that happens further down the line).
    
    Parameters:
    
    files - the list of files on which the scanners has to be created
    
    cacheBlocks - cache the blocks or not
    
    usePread - true to use pread, false if not
    
    isCompaction - true if the scanner is created for compaction
    
    matcher - the scan query matcher
    
    startRow - the start row
    
    stopRow - the stop row
    
    readPt - the read point of the current scan
    
    includeMemstoreScanner - true if memstore has to be included
    
    Returns:
    
    scanners on the given files and on the memstore if specified
    
    Throws:
    
    java.io.IOException
  - getScanners
```
public java.util.List<KeyValueScanner> getScanners(java.util.List<HStoreFile> files,
                                                   boolean cacheBlocks,
                                                   boolean usePread,
                                                   boolean isCompaction,
                                                   ScanQueryMatcher matcher,
                                                   byte[] startRow,
                                                   boolean includeStartRow,
                                                   byte[] stopRow,
                                                   boolean includeStopRow,
                                                   long readPt,
                                                   boolean includeMemstoreScanner)
                                            throws java.io.IOException
```
    Create scanners on the given files and if needed on the memstore with no filtering based on TTL (that happens further down the line).
    
    Parameters:
    
    files - the list of files on which the scanners has to be created
    
    cacheBlocks - ache the blocks or not
    
    usePread - true to use pread, false if not
    
    isCompaction - true if the scanner is created for compaction
    
    matcher - the scan query matcher
    
    startRow - the start row
    
    includeStartRow - true to include start row, false if not
    
    stopRow - the stop row
    
    includeStopRow - true to include stop row, false if not
    
    readPt - the read point of the current scan
    
    includeMemstoreScanner - true if memstore has to be included
    
    Returns:
    
    scanners on the given files and on the memstore if specified
    
    Throws:
    
    java.io.IOException
  - addChangedReaderObserver
```
public void addChangedReaderObserver(ChangedReadersObserver o)
```
    Parameters:
    
    o - Observer who wants to know about changes in set of Readers
  - deleteChangedReaderObserver
```
public void deleteChangedReaderObserver(ChangedReadersObserver o)
```
    Parameters:
    
    o - Observer no longer interested in changes in set of Readers.
  - compact
```
public java.util.List<HStoreFile> compact(CompactionContext compaction,
                                          ThroughputController throughputController,
                                          User user)
                                   throws java.io.IOException
```
    Compact the StoreFiles. This method may take some time, so the calling thread must be able to block for long periods.
    During this time, the Store can work as usual, getting values from StoreFiles and writing new StoreFiles from the memstore. Existing StoreFiles are not destroyed until the new compacted StoreFile is completely written-out to disk.
    The compactLock prevents multiple simultaneous compactions. The structureLock prevents us from interfering with other write operations.
    We don't want to hold the structureLock for the whole time, as a compact() can be lengthy and we want to allow cache-flushes during this period.
    Compaction event should be idempotent, since there is no IO Fencing for the region directory in hdfs. A region server might still try to complete the compaction after it lost the region. That is why the following events are carefully ordered for a compaction: 1. Compaction writes new files under region/.tmp directory (compaction output) 2. Compaction atomically moves the temporary file under region directory 3. Compaction appends a WAL edit containing the compaction input and output files. Forces sync on WAL. 4. Compaction deletes the input files from the region directory. Failure conditions are handled like this: - If RS fails before 2, compaction wont complete. Even if RS lives on and finishes the compaction later, it will only write the new data file to the region directory. Since we already have this data, this will be idempotent but we will have a redundant copy of the data. - If RS fails between 2 and 3, the region will have a redundant copy of the data. The RS that failed won't be able to finish snyc() for WAL because of lease recovery in WAL. - If RS fails after 3, the region region server who opens the region will pick up the the compaction marker from the WAL and replay it by removing the compaction input files. Failed RS can also attempt to delete those files, but the operation will be idempotent See HBASE-2231 for details.
    
    Parameters:
    
    compaction - compaction details obtained from requestCompaction()
    
    Returns:
    
    Storefile we compacted into or null if we failed or opted out early.
    
    Throws:
    
    java.io.IOException
  - doCompaction
```
protected java.util.List<HStoreFile> doCompaction(CompactionRequestImpl cr,
                                                  java.util.Collection<HStoreFile> filesToCompact,
                                                  User user,
                                                  long compactionStartTime,
                                                  java.util.List<Path> newFiles)
                                           throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - replayCompactionMarker
```
public void replayCompactionMarker(CompactionDescriptor compaction,
                                   boolean pickCompactionFiles,
                                   boolean removeFiles)
                            throws java.io.IOException
```
    Call to complete a compaction. Its for the case where we find in the WAL a compaction that was not finished. We could find one recovering a WAL after a regionserver crash. See HBASE-2231.
    
    Parameters:
    
    compaction -
    
    Throws:
    
    java.io.IOException
  - compactRecentForTestingAssumingDefaultPolicy
```
public void compactRecentForTestingAssumingDefaultPolicy(int N)
                                                  throws java.io.IOException
```
    This method tries to compact N recent files for testing. Note that because compacting "recent" files only makes sense for some policies, e.g. the default one, it assumes default policy is used. It doesn't use policy, but instead makes a compaction candidate list by itself.
    
    Parameters:
    
    N - Number of files.
    
    Throws:
    
    java.io.IOException
  - hasReferences
```
public boolean hasReferences()
```
    Specified by:
    
    hasReferences in interface Store
    
    Returns:
    
    true if the store has any underlying reference files to older HFiles
  - getCompactionProgress
```
public CompactionProgress getCompactionProgress()
```
    getter for CompactionProgress object
    
    Returns:
    
    CompactionProgress object; can be null
  - shouldPerformMajorCompaction
```
public boolean shouldPerformMajorCompaction()
                                     throws java.io.IOException
```
    Description copied from interface: Store
    
    Tests whether we should run a major compaction. For example, if the configured major compaction interval is reached.
    
    Specified by:
    
    shouldPerformMajorCompaction in interface Store
    
    Returns:
    
    true if we should run a major compaction.
    
    Throws:
    
    java.io.IOException
  - requestCompaction
```
public java.util.Optional<CompactionContext> requestCompaction()
                                                        throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - requestCompaction
```
public java.util.Optional<CompactionContext> requestCompaction(int priority,
                                                               CompactionLifeCycleTracker tracker,
                                                               User user)
                                                        throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - cancelRequestedCompaction
```
public void cancelRequestedCompaction(CompactionContext compaction)
```
  - completeCompaction
```
protected void completeCompaction(java.util.Collection<HStoreFile> compactedFiles)
                           throws java.io.IOException
```
    It works by processing a compaction that's been written to disk.
    It is usually invoked at the end of a compaction, but might also be invoked at HStore startup, if the prior execution died midway through.
    Moving the compacted TreeMap into place means:
```
 1) Unload all replaced StoreFile, close and collect list to delete.
 2) Compute new store size
 
```
    Parameters:
    
    compactedFiles - list of files that were compacted
    
    Throws:
    
    java.io.IOException
  - canSplit
```
public boolean canSplit()
```
    Description copied from interface: Store
    
    Returns whether this store is splittable, i.e., no reference file in this store.
    
    Specified by:
    
    canSplit in interface Store
  - getSplitPoint
```
public java.util.Optional<byte[]> getSplitPoint()
```
    Determines if Store should be split.
  - getLastCompactSize
```
public long getLastCompactSize()
```
    Specified by:
    
    getLastCompactSize in interface Store
    
    Returns:
    
    aggregate size of all HStores used in the last compaction
  - getSize
```
public long getSize()
```
    Specified by:
    
    getSize in interface Store
    
    Returns:
    
    aggregate size of HStore
  - triggerMajorCompaction
```
public void triggerMajorCompaction()
```
  - getScanner
```
public KeyValueScanner getScanner(Scan scan,
                                  java.util.NavigableSet<byte[]> targetCols,
                                  long readPt)
                           throws java.io.IOException
```
    Return a scanner for both the memstore and the HStore files. Assumes we are not in a compaction.
    
    Parameters:
    
    scan - Scan to apply when scanning the stores
    
    targetCols - columns to scan
    
    Returns:
    
    a scanner over the current key values
    
    Throws:
    
    java.io.IOException - on failure
  - createScanner
```
protected KeyValueScanner createScanner(Scan scan,
                                        ScanInfo scanInfo,
                                        java.util.NavigableSet<byte[]> targetCols,
                                        long readPt)
                                 throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - recreateScanners
```
public java.util.List<KeyValueScanner> recreateScanners(java.util.List<KeyValueScanner> currentFileScanners,
                                                        boolean cacheBlocks,
                                                        boolean usePread,
                                                        boolean isCompaction,
                                                        ScanQueryMatcher matcher,
                                                        byte[] startRow,
                                                        boolean includeStartRow,
                                                        byte[] stopRow,
                                                        boolean includeStopRow,
                                                        long readPt,
                                                        boolean includeMemstoreScanner)
                                                 throws java.io.IOException
```
    Recreates the scanners on the current list of active store file scanners
    
    Parameters:
    
    currentFileScanners - the current set of active store file scanners
    
    cacheBlocks - cache the blocks or not
    
    usePread - use pread or not
    
    isCompaction - is the scanner for compaction
    
    matcher - the scan query matcher
    
    startRow - the scan's start row
    
    includeStartRow - should the scan include the start row
    
    stopRow - the scan's stop row
    
    includeStopRow - should the scan include the stop row
    
    readPt - the read point of the current scane
    
    includeMemstoreScanner - whether the current scanner should include memstorescanner
    
    Returns:
    
    list of scanners recreated on the current Scanners
    
    Throws:
    
    java.io.IOException
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - getStorefilesCount
```
public int getStorefilesCount()
```
    Specified by:
    
    getStorefilesCount in interface Store
    
    Returns:
    
    Count of store files
  - getCompactedFilesCount
```
public int getCompactedFilesCount()
```
    Specified by:
    
    getCompactedFilesCount in interface Store
    
    Returns:
    
    Count of compacted store files
  - getMaxStoreFileAge
```
public java.util.OptionalLong getMaxStoreFileAge()
```
    Specified by:
    
    getMaxStoreFileAge in interface Store
    
    Returns:
    
    Max age of store files in this store
  - getMinStoreFileAge
```
public java.util.OptionalLong getMinStoreFileAge()
```
    Specified by:
    
    getMinStoreFileAge in interface Store
    
    Returns:
    
    Min age of store files in this store
  - getAvgStoreFileAge
```
public java.util.OptionalDouble getAvgStoreFileAge()
```
    Specified by:
    
    getAvgStoreFileAge in interface Store
    
    Returns:
    
    Average age of store files in this store
  - getNumReferenceFiles
```
public long getNumReferenceFiles()
```
    Specified by:
    
    getNumReferenceFiles in interface Store
    
    Returns:
    
    Number of reference files in this store
  - getNumHFiles
```
public long getNumHFiles()
```
    Specified by:
    
    getNumHFiles in interface Store
    
    Returns:
    
    Number of HFiles in this store
  - getStoreSizeUncompressed
```
public long getStoreSizeUncompressed()
```
    Specified by:
    
    getStoreSizeUncompressed in interface Store
    
    Returns:
    
    The size of the store files, in bytes, uncompressed.
  - getStorefilesSize
```
public long getStorefilesSize()
```
    Specified by:
    
    getStorefilesSize in interface Store
    
    Returns:
    
    The size of the store files, in bytes.
  - getHFilesSize
```
public long getHFilesSize()
```
    Specified by:
    
    getHFilesSize in interface Store
    
    Returns:
    
    The size of only the store files which are HFiles, in bytes.
  - getStorefilesRootLevelIndexSize
```
public long getStorefilesRootLevelIndexSize()
```
    Specified by:
    
    getStorefilesRootLevelIndexSize in interface Store
    
    Returns:
    
    The size of the store file root-level indexes, in bytes.
  - getTotalStaticIndexSize
```
public long getTotalStaticIndexSize()
```
    Description copied from interface: Store
    
    Returns the total size of all index blocks in the data block indexes, including the root level, intermediate levels, and the leaf level for multi-level indexes, or just the root level for single-level indexes.
    
    Specified by:
    
    getTotalStaticIndexSize in interface Store
    
    Returns:
    
    the total size of block indexes in the store
  - getTotalStaticBloomSize
```
public long getTotalStaticBloomSize()
```
    Description copied from interface: Store
    
    Returns the total byte size of all Bloom filter bit arrays. For compound Bloom filters even the Bloom blocks currently not loaded into the block cache are counted.
    
    Specified by:
    
    getTotalStaticBloomSize in interface Store
    
    Returns:
    
    the total size of all Bloom filters in the store
  - getMemStoreSize
```
public MemStoreSize getMemStoreSize()
```
    Specified by:
    
    getMemStoreSize in interface Store
    
    Returns:
    
    The size of this store's memstore.
  - getCompactPriority
```
public int getCompactPriority()
```
    Specified by:
    
    getCompactPriority in interface Store
  - throttleCompaction
```
public boolean throttleCompaction(long compactionSize)
```
  - getHRegion
```
public HRegion getHRegion()
```
  - getCoprocessorHost
```
public RegionCoprocessorHost getCoprocessorHost()
```
  - getRegionInfo
```
public RegionInfo getRegionInfo()
```
    Specified by:
    
    getRegionInfo in interface Store
    
    Returns:
    
    the parent region info hosting this store
  - areWritesEnabled
```
public boolean areWritesEnabled()
```
    Specified by:
    
    areWritesEnabled in interface Store
  - getSmallestReadPoint
```
public long getSmallestReadPoint()
```
    Specified by:
    
    getSmallestReadPoint in interface Store
    
    Returns:
    
    The smallest mvcc readPoint across all the scanners in this region. Writes older than this readPoint, are included in every read operation.
  - upsert
```
public void upsert(java.lang.Iterable<Cell> cells,
                   long readpoint,
                   MemStoreSizing memstoreSizing)
            throws java.io.IOException
```
    Adds or replaces the specified KeyValues.
    For each KeyValue specified, if a cell with the same row, family, and qualifier exists in MemStore, it will be replaced. Otherwise, it will just be inserted to MemStore.
    This operation is atomic on each KeyValue (row/family/qualifier) but not necessarily atomic across all of them.
    
    Parameters:
    
    readpoint - readpoint below which we can safely remove duplicate KVs
    
    Throws:
    
    java.io.IOException
  - createFlushContext
```
public org.apache.hadoop.hbase.regionserver.StoreFlushContext createFlushContext(long cacheFlushId,
                                                                                 FlushLifeCycleTracker tracker)
```
  - needsCompaction
```
public boolean needsCompaction()
```
    Description copied from interface: Store
    
    See if there's too much store files in this store
    
    Specified by:
    
    needsCompaction in interface Store
    
    Returns:
    
    true if number of store files is greater than the number defined in minFilesToCompact
  - getCacheConfig
```
public CacheConfig getCacheConfig()
```
    Used for tests.
    
    Returns:
    
    cache configuration for this Store.
  - heapSize
```
public long heapSize()
```
  - getComparator
```
public CellComparator getComparator()
```
    Specified by:
    
    getComparator in interface Store
  - getScanInfo
```
public ScanInfo getScanInfo()
```
  - hasTooManyStoreFiles
```
public boolean hasTooManyStoreFiles()
```
    Specified by:
    
    hasTooManyStoreFiles in interface Store
    
    Returns:
    
    Whether this store has too many store files.
  - getFlushedCellsCount
```
public long getFlushedCellsCount()
```
    Specified by:
    
    getFlushedCellsCount in interface Store
    
    Returns:
    
    The number of cells flushed to disk
  - getFlushedCellsSize
```
public long getFlushedCellsSize()
```
    Specified by:
    
    getFlushedCellsSize in interface Store
    
    Returns:
    
    The total size of data flushed to disk, in bytes
  - getFlushedOutputFileSize
```
public long getFlushedOutputFileSize()
```
    Specified by:
    
    getFlushedOutputFileSize in interface Store
    
    Returns:
    
    The total size of out output files on disk, in bytes
  - getCompactedCellsCount
```
public long getCompactedCellsCount()
```
    Specified by:
    
    getCompactedCellsCount in interface Store
    
    Returns:
    
    The number of cells processed during minor compactions
  - getCompactedCellsSize
```
public long getCompactedCellsSize()
```
    Specified by:
    
    getCompactedCellsSize in interface Store
    
    Returns:
    
    The total amount of data processed during minor compactions, in bytes
  - getMajorCompactedCellsCount
```
public long getMajorCompactedCellsCount()
```
    Specified by:
    
    getMajorCompactedCellsCount in interface Store
    
    Returns:
    
    The number of cells processed during major compactions
  - getMajorCompactedCellsSize
```
public long getMajorCompactedCellsSize()
```
    Specified by:
    
    getMajorCompactedCellsSize in interface Store
    
    Returns:
    
    The total amount of data processed during major compactions, in bytes
  - getStoreEngine
```
public StoreEngine<?,?,?,?> getStoreEngine()
```
    Returns the StoreEngine that is backing this concrete implementation of Store.
    
    Returns:
    
    Returns the StoreEngine object used internally inside this HStore object.
  - getOffPeakHours
```
protected OffPeakHours getOffPeakHours()
```
  - onConfigurationChange
```
public void onConfigurationChange(Configuration conf)
```
    This method would be called by the ConfigurationManager object when the Configuration object is reloaded from disk.
    
    Specified by:
    
    onConfigurationChange in interface ConfigurationObserver
  - registerChildren
```
public void registerChildren(ConfigurationManager manager)
```
    Needs to be called to register the children to the manager.
    
    Specified by:
    
    registerChildren in interface PropagatingConfigurationObserver
    
    Parameters:
    
    manager - : to register to
  - deregisterChildren
```
public void deregisterChildren(ConfigurationManager manager)
```
    Needs to be called to deregister the children from the manager.
    
    Specified by:
    
    deregisterChildren in interface PropagatingConfigurationObserver
    
    Parameters:
    
    manager - : to deregister from
  - getCompactionPressure
```
public double getCompactionPressure()
```
    Description copied from interface: Store
    This value can represent the degree of emergency of compaction for this store. It should be greater than or equal to 0.0, any value greater than 1.0 means we have too many store files.
    - if getStorefilesCount <= getMinFilesToCompact, return 0.0
    - return (getStorefilesCount - getMinFilesToCompact) / (blockingFileCount - getMinFilesToCompact)
    And for striped stores, we should calculate this value by the files in each stripe separately and return the maximum value.
    It is similar to Store.getCompactPriority() except that it is more suitable to use in a linear formula.
    Specified by:
    
    getCompactionPressure in interface Store
  - isPrimaryReplicaStore
```
public boolean isPrimaryReplicaStore()
```
    Specified by:
    
    isPrimaryReplicaStore in interface Store
  - preSnapshotOperation
```
public void preSnapshotOperation()
```
    Sets the store up for a region level snapshot operation.
    
    See Also:
    
    postSnapshotOperation()
  - postSnapshotOperation
```
public void postSnapshotOperation()
```
    Perform tasks needed after the completion of snapshot operation.
    
    See Also:
    
    preSnapshotOperation()
  - closeAndArchiveCompactedFiles
```
public void closeAndArchiveCompactedFiles()
                                   throws java.io.IOException
```
    Closes and archives the compacted files under this store
    
    Throws:
    
    java.io.IOException
  - preFlushSeqIDEstimation
```
public java.lang.Long preFlushSeqIDEstimation()
```
  - isSloppyMemStore
```
public boolean isSloppyMemStore()
```
    Specified by:
    
    isSloppyMemStore in interface Store
    
    Returns:
    
    true if the memstore may need some extra memory space

Class HStore

Field Summary

Fields inherited from interface org.apache.hadoop.hbase.regionserver.Store

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

MEMSTORE_CLASS_NAME

COMPACTCHECKER_INTERVAL_MULTIPLIER_KEY

BLOCKING_STOREFILES_KEY

BLOCK_STORAGE_POLICY_KEY

DEFAULT_BLOCK_STORAGE_POLICY

DEFAULT_COMPACTCHECKER_INTERVAL_MULTIPLIER

DEFAULT_BLOCKING_STOREFILE_COUNT

memstore

region

conf

cacheConf

blocksize

checksumType

bytesPerChecksum

comparator

cryptoContext

FIXED_OVERHEAD

DEEP_OVERHEAD

Constructor Detail

HStore

Method Detail

createCacheConf

createStoreEngine

determineTTLFromFamily

getColumnFamilyName

getTableName

getFileSystem

getRegionFileSystem

getStoreFileTtl

getMemStoreFlushSize

getFlushableSize

getSnapshotSize

getCompactionCheckMultiplier

getBlockingFileCount

getBytesPerChecksum

getChecksumType

getCloseCheckInterval

getColumnFamilyDescriptor

getMaxSequenceId

getMaxMemStoreTS

getStoreHomedir

getStoreHomedir

getDataBlockEncoder

refreshStoreFiles

refreshStoreFiles

createStoreFileAndReader

startReplayingFromWAL

stopReplayingFromWAL

add

add

timeOfOldestEdit

getStorefiles

getCompactedFiles

assertBulkLoadHFileOk

preBulkLoadHFile

bulkLoadHFile

bulkLoadHFile

close

flushCache

createWriterInTmp

getScanners

getScanners

getScanners

getScanners

addChangedReaderObserver

deleteChangedReaderObserver

compact

doCompaction

replayCompactionMarker

compactRecentForTestingAssumingDefaultPolicy

hasReferences

getCompactionProgress

shouldPerformMajorCompaction