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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-5277) HBase handler skips rows with null valued first cells when only row key is selected
Date Sat, 12 Oct 2013 23:05:42 GMT

    [ https://issues.apache.org/jira/browse/HIVE-5277?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13793523#comment-13793523
] 

Hive QA commented on HIVE-5277:
-------------------------------



{color:green}Overall{color}: +1 all checks pass

Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12608162/HIVE-5277.2.patch.txt

{color:green}SUCCESS:{color} +1 4397 tests passed

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/1114/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/1114/console

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
{noformat}

This message is automatically generated.

> HBase handler skips rows with null valued first cells when only row key is selected
> -----------------------------------------------------------------------------------
>
>                 Key: HIVE-5277
>                 URL: https://issues.apache.org/jira/browse/HIVE-5277
>             Project: Hive
>          Issue Type: Bug
>          Components: HBase Handler
>    Affects Versions: 0.11.0, 0.11.1, 0.12.0, 0.13.0
>            Reporter: Teddy Choi
>            Assignee: Teddy Choi
>         Attachments: HIVE-5277.1.patch.txt, HIVE-5277.2.patch.txt
>
>
> HBaseStorageHandler skips rows with null valued first cells when only row key is selected.
> {noformat}
> SELECT key, col1, col2 FROM hbase_table;
> key1	cell1	cell2 
> key2	NULL	cell3
> SELECT COUNT(key) FROM hbase_table;
> 1
> {noformat}
> HiveHBaseTableInputFormat.getRecordReader makes first cell selected to avoid skipping
rows. But when the first cell is null, HBase skips that row.
> http://hbase.apache.org/book/perf.reading.html 12.9.6. Optimal Loading of Row Keys describes
how to deal with this problem.
> I tried to find an existing issue, but I couldn't. If you find a same issue, please make
this issue duplicated.



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