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https://issues.apache.org/jira/browse/YARN-4313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14979956#comment-14979956
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Jian He commented on YARN-4313:
-------------------------------
[~gtCarrera9], thanks for taking a look at this. This variable needs to be
declared as final since it's accessed from within an inner class. So a boolean
flag may not work as it cannot be reset ?
> Race condition in MiniMRYarnCluster when getting history server address
> -----------------------------------------------------------------------
>
> Key: YARN-4313
> URL: https://issues.apache.org/jira/browse/YARN-4313
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Jian He
> Assignee: Jian He
> Attachments: YARN-4313.1.patch
>
>
> Problem in this place when waiting for JHS to be started
> {code}
> new Thread() {
> public void run() {
> historyServer.start();
> };
> }.start();
> while (historyServer.getServiceState() == STATE.INITED) {
> LOG.info("Waiting for HistoryServer to start...");
> Thread.sleep(1500);
> }
> {code}
> The service state is updated before the service is actually started. See
> AbstractServic#start. So it's possible that when the while loop breaks, the
> service is not yet started.
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