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https://issues.apache.org/jira/browse/HIVE-7158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14015118#comment-14015118
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Hive QA commented on HIVE-7158:
-------------------------------
{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/12647760/HIVE-7158.2.patch
{color:red}ERROR:{color} -1 due to 13 failed/errored test(s), 5571 tests
executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_stats16
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_metadata_only_queries
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_ptf
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_scriptfile1
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_tez_dml
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_tez_schema_evolution
org.apache.hadoop.hive.cli.TestMinimrCliDriver.testCliDriver_bucketmapjoin6
org.apache.hadoop.hive.cli.TestMinimrCliDriver.testCliDriver_root_dir_external_table
org.apache.hadoop.hive.cli.TestNegativeCliDriver.testNegativeCliDriver_authorization_ctas
org.apache.hadoop.hive.ql.exec.tez.TestTezTask.testSubmit
org.apache.hive.hcatalog.pig.TestOrcHCatPigStorer.testWriteDecimal
org.apache.hive.hcatalog.pig.TestOrcHCatPigStorer.testWriteDecimalX
org.apache.hive.hcatalog.pig.TestOrcHCatPigStorer.testWriteDecimalXY
{noformat}
Test results:
http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-Build/362/testReport
Console output:
http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-Build/362/console
Test logs:
http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-Build-362/
Messages:
{noformat}
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 13 tests failed
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12647760
> Use Tez auto-parallelism in Hive
> --------------------------------
>
> Key: HIVE-7158
> URL: https://issues.apache.org/jira/browse/HIVE-7158
> Project: Hive
> Issue Type: Bug
> Reporter: Gunther Hagleitner
> Assignee: Gunther Hagleitner
> Attachments: HIVE-7158.1.patch, HIVE-7158.2.patch
>
>
> Tez can optionally sample data from a fraction of the tasks of a vertex and
> use that information to choose the number of downstream tasks for any given
> scatter gather edge.
> Hive estimates the count of reducers by looking at stats and estimates for
> each operator in the operator pipeline leading up to the reducer. However, if
> this estimate turns out to be too large, Tez can reign in the resources used
> to compute the reducer.
> It does so by combining partitions of the upstream vertex. It cannot,
> however, add reducers at this stage.
> I'm proposing to let users specify whether they want to use auto-parallelism
> or not. If they do there will be scaling factors to determine max and min
> reducers Tez can choose from. We will then partition by max reducers, letting
> Tez sample and reign in the count up until the specified min.
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