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https://issues.apache.org/jira/browse/HIVE-16282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15941592#comment-15941592
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Hive QA commented on HIVE-16282:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12860495/HIVE-16282.5.patch
{color:green}SUCCESS:{color} +1 due to 1 test(s) being added or modified.
{color:red}ERROR:{color} -1 due to 1 failed/errored test(s), 10511 tests
executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[comments] (batchId=35)
{noformat}
Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/4355/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/4355/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-4355/
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: 1 tests failed
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12860495 - PreCommit-HIVE-Build
> Semijoin: Disable slow-start for the bloom filter aggregate task
> ----------------------------------------------------------------
>
> Key: HIVE-16282
> URL: https://issues.apache.org/jira/browse/HIVE-16282
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.2.0
> Reporter: Gopal V
> Assignee: Deepak Jaiswal
> Attachments: extended plan.rtf, HIVE-16282.1.patch,
> HIVE-16282.2.patch, HIVE-16282.3.patch, HIVE-16282.4.patch, HIVE-16282.5.patch
>
>
> The slow-start of the bloom filter vertex is a scheduling problem which
> causes more pre-emption than is useful.
> When the bloom filters are arranged as follows
> Map 1(10 tasks)->Reducer 2(1 task)->Map 3(100 tasks)
> Map 3 and Map 1 are immediately active since Reducer 2 -> Map 3 is a
> broadcast edge.
> Once 3 tasks in Map 1 finish, the engine kills one active task from Map 3 to
> make room for Reducer 2.
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