[HBASE-19681] Online snapshot creation failing with missing store file

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.3.0
• Component/s: backup&restore, Performance, scaling, snapshots

Environment

Hadoop - 2.7.3
HBase 1.3.0
OS - GNU/Linux x86_64
Cluster - Amazon Elastic Mapreduce

• Assignee: Unassigned
• Reporter: Anirban Roy
• Created: 01/Jan/18 18:11
• Updated: 26/Mar/18 13:07

Description

We are facing problem creating online snapshot of our HBase table. The table contains 20TB data and receiving ~10000 writes per second. The snapshot creating failing intermittently with error that some hfile missing, see the detailed output below. Once we locate the region server hosting the region and restart the region server, snapshot creation succeeds. It seems the missing hfile removed due to minor compaction, but region server still holds the pointer to the file.

[hadoop@ip-10-0-12-164 ~]$ hbase shell
HBase Shell; enter 'help<RETURN>' for list of supported commands.
Type "exit<RETURN>" to leave the HBase Shell
Version 1.3.0, rUnknown, Fri Feb 17 18:15:07 UTC 2017
 
hbase(main):001:0> snapshot ‘x_table’, ‘x_snapshot’
 
ERROR: org.apache.hadoop.hbase.snapshot.HBaseSnapshotException: Snapshot

{ ss=x_snapshot table=x_table type=FLUSH }

had an error.  Procedure x_snapshot

{ waiting=[] done=[ip-10-0-9-31.ec2.internal,16020,1508372578254, ip-10-0-0-32.ec2.internal,16020,1508372591059, ip-10-0-14-221.ec2.internal,16020,1508372580873, ip-10-0-15-185.ec2.internal,16020,1508372588507, ip-10-0-9-43.ec2.internal,16020,1508372569107, ip-10-0-10-62.ec2.internal,16020,1512885921693, ip-10-0-8-216.ec2.internal,16020,1508372584133, ip-10-0-1-207.ec2.internal,16020,1508372580144, ip-10-0-0-173.ec2.internal,16020,1508372584969, ip-10-0-4-79.ec2.internal,16020,1508372587161, ip-10-0-3-165.ec2.internal,16020,1508372593566, ip-10-0-14-137.ec2.internal,16020,1508372583225, ip-10-0-6-33.ec2.internal,16020,1508372581587, ip-10-0-15-199.ec2.internal,16020,1508372587478, ip-10-0-5-253.ec2.internal,16020,1508372581243, ip-10-0-1-99.ec2.internal,16020,1508372609684] }

        at org.apache.hadoop.hbase.master.snapshot.SnapshotManager.isSnapshotDone(SnapshotManager.java:354)
        at org.apache.hadoop.hbase.master.MasterRpcServices.isSnapshotDone(MasterRpcServices.java:1058)
        at org.apache.hadoop.hbase.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java:61089)
        at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2328)
        at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:123)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:188)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:168)
Caused by: org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable via ip-10-0-3-13.ec2.internal,16020,1508372563772:org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable: java.io.FileNotFoundException: File does not exist: hdfs://ip-10-0-12-164.ec2.internal:8020/user/hbase/data/default/x_table/ecbb3aeaf7c5b1f65742deab5812362c/d/f76d8827c29244b99bf9344982956523
        at org.apache.hadoop.hbase.errorhandling.ForeignExceptionDispatcher.rethrowException(ForeignExceptionDispatcher.java:83)
        at org.apache.hadoop.hbase.master.snapshot.TakeSnapshotHandler.rethrowExceptionIfFailed(TakeSnapshotHandler.java:315)
        at org.apache.hadoop.hbase.master.snapshot.SnapshotManager.isSnapshotDone(SnapshotManager.java:344)
        ... 6 more
Caused by: org.apache.hadoop.hbase.errorhandling.ForeignException$ProxyThrowable: java.io.FileNotFoundException: File does not exist: hdfs://ip-10-0-12-164.ec2.internal:8020/user/hbase/data/default/x_table/ecbb3aeaf7c5b1f65742deab5812362c/d/f76d8827c29244b99bf9344982956523
        at org.apache.hadoop.hbase.regionserver.snapshot.RegionServerSnapshotManager$SnapshotSubprocedurePool.waitForOutstandingTasks(RegionServerSnapshotManager.java:347)
        at org.apache.hadoop.hbase.regionserver.snapshot.FlushSnapshotSubprocedure.flushSnapshot(FlushSnapshotSubprocedure.java:140)
        at org.apache.hadoop.hbase.regionserver.snapshot.FlushSnapshotSubprocedure.insideBarrier(FlushSnapshotSubprocedure.java:160)
        at org.apache.hadoop.hbase.procedure.Subprocedure.call(Subprocedure.java:187)
        at org.apache.hadoop.hbase.procedure.Subprocedure.call(Subprocedure.java:53)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
 
Here is some help for this command:
Take a snapshot of specified table. Examples:
 
  hbase> snapshot 'sourceTable', 'snapshotName'
  hbase> snapshot 'namespace:sourceTable', 'snapshotName',

{SKIP_FLUSH => true}