[jira] Updated: (HBASE-1495) IllegalArgumentException in halfhfilereader#next

["stack (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-1495?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack updated HBASE-1495:
-------------------------

    Attachment: 1495.patch

Attachment fixes two issues: 1. splitting, we were updating .META. using one side of split for both splitA and splitB, and 2., on processing of split removals, we were getting NPE.

Still to do are the following phenomeon:

1. On remove of a info:splitA or info:splitB from a parent regions' row, on the next meta scan, splitA and splitB are missing even though only one side has been removed.  Because we think both removed, we'll remove the parent injuring the daughter split still being served.

2. I'm seeing store files that have keys in excess of the start and end row of hosting region.

Still working on 1 and 2.

> IllegalArgumentException in halfhfilereader#next
> ------------------------------------------------
>
>                 Key: HBASE-1495
>                 URL: https://issues.apache.org/jira/browse/HBASE-1495
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: stack
>             Fix For: 0.20.0
>
>         Attachments: 1495.patch
>
>
> From posix4e up on IRC
> {code}
> #
> 2009-06-07 20:22:33,367 ERROR org.apache.hadoop.hbase.regionserver.CompactSplitThread: Compaction failed for region t3,*******************,1244420117045
> #
> java.lang.IllegalArgumentException
> #
>         at java.nio.Buffer.position(Buffer.java:218)
> #
>         at org.apache.hadoop.hbase.io.hfile.HFile$Reader$Scanner.next(HFile.java:1072)
> #
>         at org.apache.hadoop.hbase.io.HalfHFileReader$1.next(HalfHFileReader.java:108)
> #
>         at org.apache.hadoop.hbase.regionserver.StoreFileScanner.next(StoreFileScanner.java:52)
> #
>         at org.apache.hadoop.hbase.regionserver.KeyValueHeap.next(KeyValueHeap.java:79)
> #
>         at org.apache.hadoop.hbase.regionserver.MinorCompactingStoreScanner.next(MinorCompactingSto
> #
> reScanner.java:101)
> #
>         at org.apache.hadoop.hbase.regionserver.Store.compact(Store.java:849)
> #
>         at org.apache.hadoop.hbase.regionserver.Store.compact(Store.java:714)
> #
>         at org.apache.hadoop.hbase.regionserver.HRegion.compactStores(HRegion.java:766)
> #
>         at org.apache.hadoop.hbase.regionserver.HRegion.compactStores(HRegion.java:723)
> #
>         at org.apache.hadoop.hbase.regionserver.CompactSplitThread.run(CompactSplitThread.java:105)
> {code}

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