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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1274) TestMergeTable is broken in Hudson
Date Fri, 20 Mar 2009 09:22:50 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12683812#action_12683812

stack commented on HBASE-1274:

Sequenceids for edit files need to be different because sequenceid is the key in a map of
all a Stores edit files.

There is already an issue to deal with the case where there is a sequenceid clash; unlikely
but a possibility.

Whats going on here is that you've probably fixed something that was broken.  The fact that
sequenceids are now clashing was probably always there but before hfile, we'd just move on
one of the sequenceids -- a suspect practise and something we no longer can do now the meta
is kept in hfile... can't rewrite -- so perhaps the thing to do if can't figure anything else
is to make the TestMergeTable make irregular files with diffrening numbers of edits.

> TestMergeTable is broken in Hudson
> ----------------------------------
>                 Key: HBASE-1274
>                 URL: https://issues.apache.org/jira/browse/HBASE-1274
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: test
>            Reporter: Nitay Joffe
>            Assignee: Nitay Joffe
>            Priority: Minor
>             Fix For: 0.20.0
> http://hudson.zones.apache.org/hudson/job/HBase-Patch/539/testReport/org.apache.hadoop.hbase/TestMergeTable/testMergeTable/
> java.io.IOException: Files have same sequenceid
> 	at org.apache.hadoop.hbase.regionserver.HRegion.merge(HRegion.java:2500)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.mergeAdjacent(HRegion.java:2412)
> 	at org.apache.hadoop.hbase.HMerge$Merger.merge(HMerge.java:167)
> 	at org.apache.hadoop.hbase.HMerge$Merger.process(HMerge.java:126)
> 	at org.apache.hadoop.hbase.HMerge.merge(HMerge.java:91)
> 	at org.apache.hadoop.hbase.TestMergeTable.testMergeTable(TestMergeTable.java:35)

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