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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11430) lastFlushSeqId has been updated wrongly during region open
Date Sat, 28 Jun 2014 06:46:25 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11430?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14046783#comment-14046783
] 

Hudson commented on HBASE-11430:
--------------------------------

SUCCESS: Integrated in HBase-0.98-on-Hadoop-1.1 #343 (See [https://builds.apache.org/job/HBase-0.98-on-Hadoop-1.1/343/])
HBASE-11430: lastFlushSeqId has been updated wrongly during region open (jeffreyz: rev a543e39473878030fc0c1edd837c2debad0e0b80)
* hbase-server/src/main/java/org/apache/hadoop/hbase/master/ServerManager.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java


> lastFlushSeqId has been updated wrongly during region open
> ----------------------------------------------------------
>
>                 Key: HBASE-11430
>                 URL: https://issues.apache.org/jira/browse/HBASE-11430
>             Project: HBase
>          Issue Type: Bug
>          Components: MTTR
>    Affects Versions: 0.99.0, 0.98.3
>            Reporter: Jeffrey Zhong
>            Assignee: Jeffrey Zhong
>             Fix For: 0.99.0, 0.98.4
>
>         Attachments: hbase-11430.patch
>
>
> In HRegion this.lastFlushSeqId is updated when opening a region which is wrong and will
cause issue in distributedLogReplay recovery mode(not in log splitting mode) because its value
is bumped up for log replay mode. 
> This may cause data loss issue when we recover a region in distributedLogReplay mode
while no flush for the region because no edits to be replayed. Later the region move to another
region server and then future recovery will have issue because the large flush sequence Id
value.



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