[ 
https://issues.apache.org/jira/browse/HADOOP-11499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14293579#comment-14293579
 ] 

Hudson commented on HADOOP-11499:
---------------------------------

FAILURE: Integrated in Hadoop-Mapreduce-trunk #2037 (See 
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/2037/])
HADOOP-11499. Check of executorThreadsStarted in ValueQueue#submitRefillTask() 
evades lock acquisition. Contributed by Ted Yu (jlowe: rev 
7574df1bba33919348d3009f2578d6a81b5818e6)
* 
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/key/kms/ValueQueue.java
* hadoop-common-project/hadoop-common/CHANGES.txt


> Check of executorThreadsStarted in ValueQueue#submitRefillTask() evades lock 
> acquisition
> ----------------------------------------------------------------------------------------
>
>                 Key: HADOOP-11499
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11499
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>            Priority: Minor
>             Fix For: 2.7.0
>
>         Attachments: hadoop-11499-001.patch
>
>
> {code}
>     if (!executorThreadsStarted) {
>       synchronized (this) {
>         // To ensure all requests are first queued, make coreThreads =
>         // maxThreads
>         // and pre-start all the Core Threads.
>         executor.prestartAllCoreThreads();
>         executorThreadsStarted = true;
>       }
>     }
> {code}
> It is possible that two threads executing the above code both see 
> executorThreadsStarted as being false, leading to 
> executor.prestartAllCoreThreads() called twice.



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