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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
25 import org.apache.commons.logging.Log;
26 import org.apache.commons.logging.LogFactory;
27 import org.apache.hadoop.classification.InterfaceAudience;
28 import org.apache.hadoop.hbase.HRegionInfo;
29 import org.apache.hadoop.hbase.ServerName;
30 import org.apache.hadoop.hbase.errorhandling.ForeignException;
31 import org.apache.hadoop.hbase.master.MasterServices;
32 import org.apache.hadoop.hbase.procedure.Procedure;
33 import org.apache.hadoop.hbase.procedure.ProcedureCoordinator;
34 import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription;
35 import org.apache.hadoop.hbase.snapshot.HBaseSnapshotException;
36 import org.apache.hadoop.hbase.util.Pair;
37
38 import com.google.common.collect.Lists;
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45 @InterfaceAudience.Private
46 public class EnabledTableSnapshotHandler extends TakeSnapshotHandler {
47
48 private static final Log LOG = LogFactory.getLog(EnabledTableSnapshotHandler.class);
49 private final ProcedureCoordinator coordinator;
50
51 public EnabledTableSnapshotHandler(SnapshotDescription snapshot, MasterServices master,
52 SnapshotManager manager) throws IOException {
53 super(snapshot, master);
54 this.coordinator = manager.getCoordinator();
55 }
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65 @Override
66 protected void snapshotRegions(List<Pair<HRegionInfo, ServerName>> regions)
67 throws HBaseSnapshotException {
68 Set<String> regionServers = new HashSet<String>(regions.size());
69 for (Pair<HRegionInfo, ServerName> region : regions) {
70 regionServers.add(region.getSecond().toString());
71 }
72
73
74 Procedure proc = coordinator.startProcedure(this.monitor, this.snapshot.getName(),
75 this.snapshot.toByteArray(), Lists.newArrayList(regionServers));
76 if (proc == null) {
77 String msg = "Failed to submit distributed procedure for snapshot '"
78 + snapshot.getName() + "'";
79 LOG.error(msg);
80 throw new HBaseSnapshotException(msg);
81 }
82
83 try {
84
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86 proc.waitForCompleted();
87 LOG.info("Done waiting - snapshot for " + this.snapshot.getName() + " finished!");
88 } catch (InterruptedException e) {
89 ForeignException ee =
90 new ForeignException("Interrupted while waiting for snapshot to finish", e);
91 monitor.receive(ee);
92 Thread.currentThread().interrupt();
93 } catch (ForeignException e) {
94 monitor.receive(e);
95 }
96 }
97 }