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https://issues.apache.org/jira/browse/HIVE-7144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14050814#comment-14050814
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Hive QA commented on HIVE-7144:
-------------------------------
{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/12653660/HIVE-7144.3.patch
{color:red}ERROR:{color} -1 due to 1 failed/errored test(s), 5672 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestMinimrCliDriver.testCliDriver_root_dir_external_table
{noformat}
Test results:
http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-Build/660/testReport
Console output:
http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-Build/660/console
Test logs:
http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-Build-660/
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: 1 tests failed
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12653660
> GC pressure during ORC StringDictionary writes
> -----------------------------------------------
>
> Key: HIVE-7144
> URL: https://issues.apache.org/jira/browse/HIVE-7144
> Project: Hive
> Issue Type: Bug
> Components: File Formats
> Affects Versions: 0.14.0
> Environment: ORC Table ~ 12 string columns
> Reporter: Gopal V
> Assignee: Gopal V
> Labels: ORC, Performance
> Attachments: HIVE-7144.1.patch, HIVE-7144.2.patch, HIVE-7144.3.patch,
> orc-string-write.png
>
>
> When ORC string dictionary writes data out, it suffers from bad GC
> performance due to a few allocations in-loop.
> !orc-string-write.png!
> The conversions are as follows
> StringTreeWriter::getStringValue() causes 2 conversions
> LazyString -> Text (LazyString::getWritableObject)
> Text -> String (LazyStringObjectInspector::getPrimitiveJavaObject)
> Then StringRedBlackTree::add() does one conversion
> String -> Text
> This causes some GC pressure with un-necessary String and byte[] array
> allocations.
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