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Date: Fri, 21 Aug 2015 15:54:46 +0000 (UTC)
From: "Sean Busbey (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.12857875.1440170175000.130859.1440172486144@Atlassian.JIRA>
In-Reply-To: <JIRA.12857875.1440170175000@Atlassian.JIRA>
References: <JIRA.12857875.1440170175000@Atlassian.JIRA>
 <JIRA.12857875.1440170175196@arcas>
Subject: [jira] [Commented] (HBASE-14281) ArrayIndexOutOfBoundsException in
 CellComparator#getMinimumMidpointArray, part 2
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    [ https://issues.apache.org/jira/browse/HBASE-14281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14706911#comment-14706911 ] 

Sean Busbey commented on HBASE-14281:
-------------------------------------

thanks for filing this Michael. can you post up your additional fixes as a patch here?

> ArrayIndexOutOfBoundsException in CellComparator#getMinimumMidpointArray, part 2
> --------------------------------------------------------------------------------
>
>                 Key: HBASE-14281
>                 URL: https://issues.apache.org/jira/browse/HBASE-14281
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 1.0.0, 1.0.1, 1.0.2
>            Reporter: Michael Rose
>
> Follow-on issue for HBASE-13329: CellComparator#getMinimumMidpointArray seems to have had a necessary change omitted and the patch only covered one of the two places diffIdx could overflow the short.
> For some background, we ran into the HBASE-13329 issue where a flush would cause a regionserver abort. After abort, the region in question would almost indefinitely sit in the FAILED_OPEN state. Applying the patch from HBASE-13329 didn't solve the issue, but I noticed a comment in that issue which applied the same change in CellComparator#getMinimumMidpointArray, but the change was omitted from the attached patch.
> RS abort for reference:
> slave3.xxx.xxx.xxx,60020,1440131603772: Replay of WAL required. Forcing server shutdown
> org.apache.hadoop.hbase.DroppedSnapshotException: region: deduplication,P\xDFt\x10\x053e73ceff5a2717d2ba76887ea21a2a8e353d1372\xFE,1438362391124.2bb6a602be6b1bfcea0508af4ba42235.
> at org.apache.hadoop.hbase.regionserver.HRegion.internalFlushCacheAndCommit(HRegion.java:2243)
> at org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:1972)
> at org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:1935)
> at org.apache.hadoop.hbase.regionserver.HRegion.flushcache(HRegion.java:1833)
> at org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:452)
> at org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:413)
> at org.apache.hadoop.hbase.regionserver.MemStoreFlusher.access$800(MemStoreFlusher.java:70)
> at org.apache.hadoop.hbase.regionserver.MemStoreFlusher$FlushHandler.run(MemStoreFlusher.java:229)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.NegativeArraySizeException
> at org.apache.hadoop.hbase.CellComparator.getMinimumMidpointArray(CellComparator.java:494)
> at org.apache.hadoop.hbase.CellComparator.getMidpoint(CellComparator.java:448)
> at org.apache.hadoop.hbase.io.hfile.HFileWriterV2.finishBlock(HFileWriterV2.java:165)
> at org.apache.hadoop.hbase.io.hfile.HFileWriterV2.checkBlockBoundary(HFileWriterV2.java:146)
> at org.apache.hadoop.hbase.io.hfile.HFileWriterV2.append(HFileWriterV2.java:263)
> at org.apache.hadoop.hbase.regionserver.StoreFile$Writer.append(StoreFile.java:949)


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