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https://issues.apache.org/jira/browse/HIVE-11882?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14951731#comment-14951731
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Hive QA commented on HIVE-11882:
--------------------------------
{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/12765680/HIVE-11882.1.patch
{color:green}SUCCESS:{color} +1 due to 1 test(s) being added or modified.
{color:red}ERROR:{color} -1 due to 2 failed/errored test(s), 9664 tests executed
*Failed tests:*
{noformat}
org.apache.hive.hcatalog.api.TestHCatClient.testTableSchemaPropagation
org.apache.hive.jdbc.TestSSL.testSSLVersion
{noformat}
Test results:
http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/5593/testReport
Console output:
http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/5593/console
Test logs:
http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-5593/
Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
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: 2 tests failed
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12765680 - PreCommit-HIVE-TRUNK-Build
> Fetch optimizer should stop source files traversal once it exceeds the
> hive.fetch.task.conversion.threshold
> -----------------------------------------------------------------------------------------------------------
>
> Key: HIVE-11882
> URL: https://issues.apache.org/jira/browse/HIVE-11882
> Project: Hive
> Issue Type: Improvement
> Components: Physical Optimizer
> Affects Versions: 1.0.0
> Reporter: Illya Yalovyy
> Assignee: Illya Yalovyy
> Attachments: HIVE-11882.1.patch
>
>
> Hive 1.0's fetch optimizer tries to optimize queries of the form "select <C>
> from <T> where <F> limit <L>" to a fetch task (see the
> hive.fetch.task.conversion property). This optimization gets the lengths of
> all the files in the specified partition and does some comparison against a
> threshold value to determine whether it should use a fetch task or not (see
> the hive.fetch.task.conversion.threshold property). This process of getting
> the length of all files. One of the main problems in this optimization is the
> fetch optimizer doesn't seem to stop once it exceeds the
> hive.fetch.task.conversion.threshold. It works fine on HDFS, but could cause
> a significant performance degradation on other supported file systems.
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