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18 package org.apache.hadoop.hbase.master.snapshot;
19
20 import java.io.IOException;
21 import java.util.HashSet;
22 import java.util.List;
23 import java.util.Set;
24 import java.util.concurrent.ThreadPoolExecutor;
25
26 import org.apache.commons.logging.Log;
27 import org.apache.commons.logging.LogFactory;
28 import org.apache.hadoop.hbase.HConstants;
29 import org.apache.hadoop.conf.Configuration;
30 import org.apache.hadoop.hbase.HConstants;
31 import org.apache.hadoop.hbase.classification.InterfaceAudience;
32 import org.apache.hadoop.hbase.classification.InterfaceStability;
33 import org.apache.hadoop.hbase.HRegionInfo;
34 import org.apache.hadoop.hbase.ServerName;
35 import org.apache.hadoop.hbase.client.RegionReplicaUtil;
36 import org.apache.hadoop.hbase.errorhandling.ForeignException;
37 import org.apache.hadoop.hbase.master.MasterServices;
38 import org.apache.hadoop.hbase.mob.MobUtils;
39 import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription;
40 import org.apache.hadoop.hbase.snapshot.ClientSnapshotDescriptionUtils;
41 import org.apache.hadoop.hbase.snapshot.SnapshotManifest;
42 import org.apache.hadoop.hbase.util.FSUtils;
43 import org.apache.hadoop.hbase.util.ModifyRegionUtils;
44 import org.apache.hadoop.hbase.util.Pair;
45 import org.apache.zookeeper.KeeperException;
46
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51
52 @InterfaceAudience.Private
53 @InterfaceStability.Evolving
54 public class DisabledTableSnapshotHandler extends TakeSnapshotHandler {
55 private static final Log LOG = LogFactory.getLog(DisabledTableSnapshotHandler.class);
56
57
58
59
60
61 public DisabledTableSnapshotHandler(SnapshotDescription snapshot,
62 final MasterServices masterServices) {
63 super(snapshot, masterServices);
64 }
65
66 @Override
67 public DisabledTableSnapshotHandler prepare() throws Exception {
68 return (DisabledTableSnapshotHandler) super.prepare();
69 }
70
71
72
73 @Override
74 public void snapshotRegions(List<Pair<HRegionInfo, ServerName>> regionsAndLocations)
75 throws IOException, KeeperException {
76 try {
77
78
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80 Set<HRegionInfo> regions = new HashSet<HRegionInfo>();
81 for (Pair<HRegionInfo, ServerName> p : regionsAndLocations) {
82
83 HRegionInfo hri = p.getFirst();
84 if (RegionReplicaUtil.isDefaultReplica(hri)) {
85 regions.add(hri);
86 }
87 }
88
89 boolean mobEnabled = MobUtils.hasMobColumns(htd);
90 if (mobEnabled) {
91
92 HRegionInfo mobRegionInfo = MobUtils.getMobRegionInfo(htd.getTableName());
93 regions.add(mobRegionInfo);
94 }
95
96
97 String msg = "Starting to write region info and WALs for regions for offline snapshot:"
98 + ClientSnapshotDescriptionUtils.toString(snapshot);
99 LOG.info(msg);
100 status.setStatus(msg);
101
102 ThreadPoolExecutor exec = SnapshotManifest.createExecutor(conf, "DisabledTableSnapshot");
103 try {
104 ModifyRegionUtils.editRegions(exec, regions, new ModifyRegionUtils.RegionEditTask() {
105 @Override
106 public void editRegion(final HRegionInfo regionInfo) throws IOException {
107 snapshotManifest.addRegion(FSUtils.getTableDir(rootDir, snapshotTable), regionInfo);
108 }
109 });
110 } finally {
111 exec.shutdown();
112 }
113 } catch (Exception e) {
114
115 String reason = "Failed snapshot " + ClientSnapshotDescriptionUtils.toString(snapshot)
116 + " due to exception:" + e.getMessage();
117 ForeignException ee = new ForeignException(reason, e);
118 monitor.receive(ee);
119 status.abort("Snapshot of table: "+ snapshotTable + " failed because " + e.getMessage());
120 } finally {
121 LOG.debug("Marking snapshot" + ClientSnapshotDescriptionUtils.toString(snapshot)
122 + " as finished.");
123 }
124 }
125 }