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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13892) Scanner with all results filtered out results in NPE
Date Fri, 12 Jun 2015 00:59:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14582755#comment-14582755
] 

Enis Soztutar commented on HBASE-13892:
---------------------------------------

Nice catch! +1. 

> Scanner with all results filtered out results in NPE
> ----------------------------------------------------
>
>                 Key: HBASE-13892
>                 URL: https://issues.apache.org/jira/browse/HBASE-13892
>             Project: HBase
>          Issue Type: Bug
>          Components: Client
>    Affects Versions: 1.1.0
>            Reporter: Josh Elser
>            Assignee: Josh Elser
>            Priority: Critical
>             Fix For: 1.2.0, 1.1.1
>
>         Attachments: HBASE-13892.patch
>
>
> Saw a failure during some testing with region_mover.rb
> {code}
> NativeException: java.lang.NullPointerException: null
>         __ensure__ at /usr/hdp/current/hbase-master/bin/region_mover.rb:110
>   isSuccessfulScan at /usr/hdp/current/hbase-master/bin/region_mover.rb:109
>   isSuccessfulScan at /usr/hdp/current/hbase-master/bin/region_mover.rb:104
>      unloadRegions at /usr/hdp/current/hbase-master/bin/region_mover.rb:328
> {code}
> To try to get a real stacktrace, I wrote a simple test. Turns out, it was really simple
to just produce the NPE within ClientScanner.
> {code}
> java.lang.NullPointerException: null
> 	at org.apache.hadoop.hbase.client.ClientScanner.getResultsToAddToCache(ClientScanner.java:576)
> 	at org.apache.hadoop.hbase.client.ClientScanner.loadCache(ClientScanner.java:492)
> 	at org.apache.hadoop.hbase.client.ClientScanner.next(ClientScanner.java:364)
> {code}
> Patch with fix and test incoming.



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