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https://issues.apache.org/jira/browse/HBASE-5821?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13257635#comment-13257635
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Hadoop QA commented on HBASE-5821:
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-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12523202/HBASE-5821.patch
against trunk revision .
+1 @author. The patch does not contain any @author tags.
-1 tests included. The patch doesn't appear to include any new or modified
tests.
Please justify why no new tests are needed for this
patch.
Also please list what manual steps were performed to
verify this patch.
-1 patch. The patch command could not apply the patch.
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/1577//console
This message is automatically generated.
> Incorrect handling of null value in Coprocessor aggregation function min()
> --------------------------------------------------------------------------
>
> Key: HBASE-5821
> URL: https://issues.apache.org/jira/browse/HBASE-5821
> Project: HBase
> Issue Type: Bug
> Components: coprocessors
> Affects Versions: 0.92.1
> Reporter: Maryann Xue
> Assignee: Maryann Xue
> Fix For: 0.92.2, 0.96.0, 0.94.1
>
> Attachments: HBASE-5821.patch
>
>
> Both in AggregateImplementation and AggregationClient, the evaluation of the
> current minimum value is like:
> min = (min == null || ci.compare(result, min) < 0) ? result : min;
> The LongColumnInterpreter takes null value is treated as the least value,
> while the above expression takes min as the greater value when it is null.
> Thus, the real minimum value gets discarded if a null value comes later.
> max() could also be wrong if a different ColumnInterpreter other than
> LongColumnInterpreter treats null value differently (as the greatest).
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