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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13892) Scanner with all results filtered out results in NPE
Date Fri, 12 Jun 2015 03:23:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14582879#comment-14582879

Hadoop QA commented on HBASE-13892:

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  against master branch at commit 9d3422ed16004da1b0f9a874a98bd140b46b7a6f.
  ATTACHMENT ID: 12739148

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 4 new or modified

    {color:green}+1 hadoop versions{color}. The patch compiles with all supported hadoop versions
(2.4.1 2.5.2 2.6.0)

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 protoc{color}.  The applied patch does not increase the total number of
protoc compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 checkstyle{color}.  The applied patch does not increase the total number
of checkstyle errors

    {color:green}+1 findbugs{color}.  The patch does not introduce any  new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 lineLengths{color}.  The patch does not introduce lines longer than 100

  {color:green}+1 site{color}.  The mvn site goal succeeds with this patch.

    {color:green}+1 core tests{color}.  The patch passed unit tests in .

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/14384//testReport/
Release Findbugs (version 2.0.3) 	warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/14384//artifact/patchprocess/newFindbugsWarnings.html
Checkstyle Errors: https://builds.apache.org/job/PreCommit-HBASE-Build/14384//artifact/patchprocess/checkstyle-aggregate.html

  Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/14384//console

This message is automatically generated.

> 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: 2.0.0, 0.98.14, 1.0.2, 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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