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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-7992) StatsRulesProcFactory should gracefully handle overflows
Date Sat, 06 Sep 2014 20:57:29 GMT

    [ https://issues.apache.org/jira/browse/HIVE-7992?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14124649#comment-14124649
] 

Hive QA commented on HIVE-7992:
-------------------------------



{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/12666953/HIVE-7992.1.patch

{color:red}ERROR:{color} -1 due to 3 failed/errored test(s), 6184 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.metastore.txn.TestCompactionTxnHandler.testRevokeTimedOutWorkers
org.apache.hive.hcatalog.pig.TestHCatLoader.testReadDataPrimitiveTypes
org.apache.hive.jdbc.miniHS2.TestHiveServer2.testConnection
{noformat}

Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/671/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/671/console
Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-671/

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: 3 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12666953

> StatsRulesProcFactory should gracefully handle overflows
> --------------------------------------------------------
>
>                 Key: HIVE-7992
>                 URL: https://issues.apache.org/jira/browse/HIVE-7992
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Statistics
>    Affects Versions: 0.13.1
>            Reporter: Mostafa Mokhtar
>            Assignee: Prasanth J
>         Attachments: HIVE-7992.1.patch
>
>
> When StatsRulesProcFactory overflows it sets data size to 0 and as a result the Vertex
will ask for a single task, this results in a fairly slow running query, most likely the overflow
is a result of higher than usual number of rows.
> The class should detect an overflow and set a flag when an overflow occurs, if an overflow
occurs StatsRulesProcFactory should request the maximum number of tasks for the vertex.



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