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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-16675) Fix ConcurrentModificationException in SparkClientImpl#startDriver
Date Mon, 22 May 2017 08:17:04 GMT

    [ https://issues.apache.org/jira/browse/HIVE-16675?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16019267#comment-16019267
] 

Hive QA commented on HIVE-16675:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12869204/HIVE-16675.1.patch

{color:red}ERROR:{color} -1 due to no test(s) being added or modified.

{color:red}ERROR:{color} -1 due to 3 failed/errored test(s), 10742 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestBeeLineDriver.testCliDriver[materialized_view_create_rewrite]
(batchId=236)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[partition_wise_fileformat6] (batchId=7)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[vector_if_expr] (batchId=144)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/5378/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/5378/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-5378/

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: 3 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12869204 - PreCommit-HIVE-Build

> Fix ConcurrentModificationException in SparkClientImpl#startDriver
> ------------------------------------------------------------------
>
>                 Key: HIVE-16675
>                 URL: https://issues.apache.org/jira/browse/HIVE-16675
>             Project: Hive
>          Issue Type: Bug
>            Reporter: liyunzhang_intel
>            Assignee: liyunzhang_intel
>         Attachments: HIVE-16675.1.patch, HIVE-16675.patch
>
>
> the exception is
> {noformat}
>               2017-05-16T00:29:37,480  WARN [Driver] client.SparkClientImpl: Exception
while waiting for child process.
>               3926 java.util.ConcurrentModificationException
>               3927         at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:901)
~[?:1.8.0_91]
>               3928         at java.util.ArrayList$Itr.next(ArrayList.java:851) ~[?:1.8.0_91]
>               3929         at org.apache.hive.spark.client.SparkClientImpl$3.run(SparkClientImpl.java:495)
[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
>               3930         at java.lang.Thread.run(Thread.java:745) [?:1.8.0_91]
> {noformat}
> It seems that {{SparkClientImpl.java#childErrorLog}} is read while it is written. It
is better to change {{SparkClientImpl.java#childErrorLog}} from ArrayList to CopyOnWriteArrayList
to avoid the exception.



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