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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16660) ArrayIndexOutOfBounds during the majorCompactionCheck in DateTieredCompaction
Date Wed, 28 Sep 2016 02:07:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16660?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15528110#comment-15528110
] 

Hudson commented on HBASE-16660:
--------------------------------

FAILURE: Integrated in Jenkins build HBase-1.4 #434 (See [https://builds.apache.org/job/HBase-1.4/434/])
HBASE-16660 ArrayIndexOutOfBounds during the majorCompactionCheck in (apurtell: rev 96a8e8dce4ea65a12af6c14d22ef4d34b52ebb6c)
* (edit) hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestDateTieredCompactionPolicy.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/compactions/DateTieredCompactionPolicy.java


> ArrayIndexOutOfBounds during the majorCompactionCheck in DateTieredCompaction
> -----------------------------------------------------------------------------
>
>                 Key: HBASE-16660
>                 URL: https://issues.apache.org/jira/browse/HBASE-16660
>             Project: HBase
>          Issue Type: Bug
>          Components: Compaction
>    Affects Versions: 0.98.20
>            Reporter: Abhishek Singh Chouhan
>            Assignee: Abhishek Singh Chouhan
>             Fix For: 2.0.0, 1.3.0, 1.4.0, 0.98.23
>
>         Attachments: HBASE-16660-0.98.patch, HBASE-16660.master.001.patch, HBASE-16660.master.001.patch
>
>
> We get an ArrayIndexOutOfBoundsException during the major compaction check as follows
> {noformat}
> 2016-09-19 05:04:18,287 ERROR [20.compactionChecker] regionserver.HRegionServer$CompactionChecker
- Caught exception
> java.lang.ArrayIndexOutOfBoundsException: -2
>         at org.apache.hadoop.hbase.regionserver.compactions.DateTieredCompactionPolicy.shouldPerformMajorCompaction(DateTieredCompactionPolicy.java:159)
>         at org.apache.hadoop.hbase.regionserver.HStore.isMajorCompaction(HStore.java:1412)
>         at org.apache.hadoop.hbase.regionserver.HRegionServer$CompactionChecker.chore(HRegionServer.java:1532)
>         at org.apache.hadoop.hbase.Chore.run(Chore.java:80)
>         at java.lang.Thread.run(Thread.java:745)
> {noformat}
> This happens due to the following lines in org.apache.hadoop.hbase.regionserver.compactions.DateTieredCompactionPolicy.selectMajorCompaction
> {noformat}
> int lowerWindowIndex = Collections.binarySearch(boundaries,
>         minTimestamp == null ? Long.MAX_VALUE : file.getMinimumTimestamp());
>       int upperWindowIndex = Collections.binarySearch(boundaries,
>         file.getMaximumTimestamp() == null ? Long.MAX_VALUE : file.getMaximumTimestamp());
> {noformat}
> These return negative values if the element is not found and in the case the values are
equal we get the exception.



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