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From "Jonathan Gray (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1686) major compaction can create empty store files, causing AIOOB when trying to read
Date Mon, 27 Jul 2009 12:40:15 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12735588#action_12735588
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Jonathan Gray commented on HBASE-1686:
--------------------------------------

Had same problem on our cluster.  Patch fixed AIOOB.  +1

> major compaction can create empty store files, causing AIOOB when trying to read
> --------------------------------------------------------------------------------
>
>                 Key: HBASE-1686
>                 URL: https://issues.apache.org/jira/browse/HBASE-1686
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.20.0
>            Reporter: ryan rawson
>            Assignee: stack
>            Priority: Blocker
>             Fix For: 0.20.0
>
>         Attachments: 1686.patch
>
>
> here is the backtrace:
> Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
>         at org.apache.hadoop.hbase.io.hfile.HFile$Reader.getFirstKey(HFile.java:991)
>         at org.apache.hadoop.hbase.regionserver.StoreFileGetScan.getStoreFile(StoreFileGetScan.java:84)
>         at org.apache.hadoop.hbase.regionserver.StoreFileGetScan.get(StoreFileGetScan.java:65)
>         at org.apache.hadoop.hbase.regionserver.Store.get(Store.java:1548)
>         at org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:2263)
>         at org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:2252)
>         at org.apache.hadoop.hbase.regionserver.HRegionServer.get(HRegionServer.java:1739)
> This can happen if your table only has deletes, and everything evaporates during a major
compaction.

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