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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-4927) When we merge two MapJoin MapRedTasks, the TableScanOperator of the second one should be removed
Date Thu, 25 Jul 2013 11:55:48 GMT

    [ https://issues.apache.org/jira/browse/HIVE-4927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13719539#comment-13719539
] 

Hive QA commented on HIVE-4927:
-------------------------------



{color:red}Overall{color}: -1 at least one tests failed

Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12594067/HIVE-4927.D11811.1.patch

{color:red}ERROR:{color} -1 due to 12 failed/errored test(s), 2651 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_multi_join_union
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_auto_join13
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_mapjoin_subquery
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_join28
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_auto_sortmerge_join_12
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_mapjoin_subquery2
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_join_star
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_auto_join22
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_mapjoin_mapjoin
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_join33
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_auto_join2
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_join32
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/179/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/179/console

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.CleanupPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests failed with: TestsFailedException: 12 tests failed
{noformat}

This message is automatically generated.
                
> When we merge two MapJoin MapRedTasks, the TableScanOperator of the second one should
be removed
> ------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-4927
>                 URL: https://issues.apache.org/jira/browse/HIVE-4927
>             Project: Hive
>          Issue Type: Bug
>          Components: Query Processor
>    Affects Versions: 0.12.0
>            Reporter: Yin Huai
>            Assignee: Yin Huai
>         Attachments: HIVE-4927.D11811.1.patch
>
>
> {code}
> set hive.auto.convert.join=true;
> set hive.auto.convert.join.noconditionaltask=true;
> EXPLAIN
> SELECT x1.key AS key FROM src x1 JOIN src1 y1 ON (x1.key = y1.key) JOIN src1 y2 ON (x1.value
= y2.value) GROUP BY x1.key;
> {\code}
> We will get a NPE from MetadataOnlyOptimizer. The reason is that the operator tree of
the MapRedTask evaluating two MapJoins is 
> {code}
> TS1->MapJoin1->TS2->MapJoin2->...
> {\code}
> We should remove the TS2...

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