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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13877) Interrupt to flush from TableFlushProcedure causes dataloss in ITBLL
Date Sun, 14 Jun 2015 20:46:01 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14585265#comment-14585265
] 

Hudson commented on HBASE-13877:
--------------------------------

SUCCESS: Integrated in HBase-1.2 #8 (See [https://builds.apache.org/job/HBase-1.2/8/])
HBASE-13877 Interrupt to flush from TableFlushProcedure causes dataloss in ITBLL (enis: rev
10772d3af9d0e4e9a2bdd73730dbc7548c461ccb)
* hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHRegion.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/SplitRequest.java
* hbase-it/src/test/java/org/apache/hadoop/hbase/test/IntegrationTestBigLinkedList.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/snapshot/RegionServerSnapshotManager.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/flush/RegionServerFlushTableProcedureManager.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionMergeRequest.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/Region.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestWALReplay.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/procedure/flush/FlushTableSubprocedure.java


> Interrupt to flush from TableFlushProcedure causes dataloss in ITBLL
> --------------------------------------------------------------------
>
>                 Key: HBASE-13877
>                 URL: https://issues.apache.org/jira/browse/HBASE-13877
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>            Priority: Blocker
>             Fix For: 2.0.0, 1.2.0, 1.1.1
>
>         Attachments: hbase-13877_v1.patch, hbase-13877_v2-branch-1.1.patch, hbase-13877_v2-to-v4-branch-1.1.patch,
hbase-13877_v3-branch-1.1.patch, hbase-13877_v5-branch-1.1.patch
>
>
> ITBLL with 1.25B rows failed for me (and Stack as reported in https://issues.apache.org/jira/browse/HBASE-13811?focusedCommentId=14577834&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14577834)

> HBASE-13811 and HBASE-13853 fixed an issue with WAL edit filtering. 
> The root cause this time seems to be different. It is due to procedure based flush interrupting
the flush request in case the procedure is cancelled from an exception elsewhere. This leaves
the memstore snapshot intact without aborting the server. The next flush, then flushes the
previous memstore with the current seqId (as opposed to seqId from the memstore snapshot).
This creates an hfile with larger seqId than what its contents are. Previous behavior in 0.98
and 1.0 (I believe) is that after flush prepare and interruption / exception will cause RS
abort.



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