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https://issues.apache.org/jira/browse/HADOOP-14519?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
John Zhuge updated HADOOP-14519:
--------------------------------
Attachment: HADOOP-14519.001.patch
Patch 001
* Convert the if block for wait() into a while loop
* Break out of the loop upon InterruptedException
* Not a good idea to swallow InterruptedException. At least restore the
interrupted status.
* Don’t know how to write a unit test to catch the spurious wakeup
> Client$Connection#waitForWork may suffer spurious wakeup
> --------------------------------------------------------
>
> Key: HADOOP-14519
> URL: https://issues.apache.org/jira/browse/HADOOP-14519
> Project: Hadoop Common
> Issue Type: Bug
> Components: ipc
> Affects Versions: 2.8.0
> Reporter: John Zhuge
> Assignee: John Zhuge
> Priority: Critical
> Attachments: HADOOP-14519.001.patch
>
>
> {{Client$Connection#waitForWork}} may suffer spurious wakeup because the
> {{wait}} is not surrounded by a loop. See
> [https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html#wait()].
> {code:title=Client$Connection#waitForWork}
> if (calls.isEmpty() && !shouldCloseConnection.get() && running.get()) {
> long timeout = maxIdleTime-
> (Time.now()-lastActivity.get());
> if (timeout>0) {
> try {
> wait(timeout); <<<<<<==== spurious wakeup
> } catch (InterruptedException e) {}
> }
> }
> {code}
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