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From "Vinayakumar B (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11459) Fix recent findbugs in ActiveStandbyElector, NetUtils and ShellBasedIdMapping
Date Mon, 05 Jan 2015 10:25:34 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14264461#comment-14264461

Vinayakumar B commented on HADOOP-11459:

Findbug in ShellBasedIdMapping is not shown in Hadoop common QA builds, but it shows up in
HDFS QA [builds|https://builds.apache.org/job/PreCommit-HDFS-Build/9138/] . Don't know why.
Ideally its not a bug to be fixed. because its always accessed with lock only.

> Fix recent findbugs in ActiveStandbyElector, NetUtils and ShellBasedIdMapping
> -----------------------------------------------------------------------------
>                 Key: HADOOP-11459
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11459
>             Project: Hadoop Common
>          Issue Type: Bug
>            Reporter: Vinayakumar B
>            Assignee: Vinayakumar B
>            Priority: Minor
>         Attachments: HADOOP-11459-001.patch
> Fix findbugs in the latest jenkins which causing QA builds to fail.
> {noformat}Return value of java.util.concurrent.CountDownLatch.await(long, TimeUnit) ignored
in org.apache.hadoop.ha.ActiveStandbyElector$WatcherWithClientRef.process(WatchedEvent){noformat}
> {noformat}Sequence of calls to java.util.concurrent.ConcurrentHashMap may not be atomic
in org.apache.hadoop.net.NetUtils.canonicalizeHost(String){noformat}
> {noformat}Inconsistent synchronization of org.apache.hadoop.security.ShellBasedIdMapping.staticMapping;
locked 88% of time{noformat}

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