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Date: Mon, 30 May 2016 06:41:12 +0000 (UTC)
From: "Rajeshbabu Chintaguntla (JIRA)" <jira@apache.org>
To: dev@phoenix.incubator.apache.org
Message-ID: <JIRA.12971203.1463675853000.329929.1464590472853@Atlassian.JIRA>
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Subject: [jira] [Commented] (PHOENIX-2915) Dropping of Index can still leave
 some non-replayed writes in WAL
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archived-at: Mon, 30 May 2016 06:41:18 -0000


    [ https://issues.apache.org/jira/browse/PHOENIX-2915?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15306300#comment-15306300 ] 

Rajeshbabu Chintaguntla commented on PHOENIX-2915:
--------------------------------------------------

+1 Ankit.

> Dropping of Index can still leave some non-replayed writes in WAL
> -----------------------------------------------------------------
>
>                 Key: PHOENIX-2915
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-2915
>             Project: Phoenix
>          Issue Type: Bug
>            Reporter: Ankit Singhal
>            Assignee: Ankit Singhal
>             Fix For: 4.8.0
>
>         Attachments: PHOENIX-2915.patch, PHOENIX-2915_v1.patch
>
>
> It could be possible , that there are some index writes in WAL which are not replayed and the index is dropped.
> And, now the table is not there, these writes cannot be replayed which result in data table regions also to not come up.
> {code}
> 2016-05-16 07:30:29,215 ERROR [RS_OPEN_REGION-R2-DN8-188:16020-72] handler.OpenRegionHandler: Failed open of region=<regioname>, starting to roll back the global memstore size.
> org.apache.phoenix.hbase.index.exception.MultiIndexWriteFailureException: Failed to write to multiple index tables
>         at org.apache.phoenix.hbase.index.write.recovery.TrackingParallelWriterIndexCommitter.write(TrackingParallelWriterIndexCommitter.java:235)
>         at org.apache.phoenix.hbase.index.write.IndexWriter.write(IndexWriter.java:193)
>         at org.apache.phoenix.hbase.index.write.IndexWriter.write(IndexWriter.java:172)
>         at org.apache.phoenix.hbase.index.Indexer.preWALRestore(Indexer.java:564)
>         at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$58.call(RegionCoprocessorHost.java:1432)
>         at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$RegionOperation.call(RegionCoprocessorHost.java:1673)
>         at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperation(RegionCoprocessorHost.java:1748)
>         at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperation(RegionCoprocessorHost.java:1705)
>         at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.preWALRestore(RegionCoprocessorHost.java:1423)
>         at org.apache.hadoop.hbase.regionserver.HRegion.replayRecoveredEdits(HRegion.java:4029)
>         at org.apache.hadoop.hbase.regionserver.HRegion.replayRecoveredEditsIfAny(HRegion.java:3885)
>         at org.apache.hadoop.hbase.regionserver.HRegion.initializeRegionStores(HRegion.java:949)
>         at org.apache.hadoop.hbase.regionserver.HRegion.initializeRegionInternals(HRegion.java:819)
>         at org.apache.hadoop.hbase.regionserver.HRegion.initialize(HRegion.java:794)
>         at org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:6243)
>         at org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:6204)
>         at org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:6175)
>         at org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:6131)
>         at org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:6082)
>         at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.openRegion(OpenRegionHandler.java:362)
>         at org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.process(OpenRegionHandler.java:129)
>         at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:128)
>         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)
> 2016-05-16 07:30:29,216 INFO  [RS_OPEN_REGION-R2-DN8-188:16020-72] coordination.ZkOpenRegionCoordination: Opening of region {ENCODED => cd82f0b9f06972b6b111c368076677be, NAME => <regionname>', STARTKEY => 'x', ENDKEY => 'y'} failed, transitioning from OPENING to FAILED_OPEN in ZK, expecting version 28
> {code}


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