Gabriel Reid created HADOOP-14331:

             Summary: HadoopScheduledThreadPoolExecutor broken for periodic 
task running
                 Key: HADOOP-14331
             Project: Hadoop Common
          Issue Type: Bug
          Components: common
    Affects Versions: 3.0.0-alpha3
            Reporter: Gabriel Reid

The HadoopScheduledThreadPoolExecutor (introduced in HADOOP-12749) is broken 
for the scheduling of periodic tasks (i.e. for tasks submitted with 
{{scheduleAtFixedRate}} and {{scheduleAfterFixedDelay}}).

The behavior of the executor with these methods is that the underlying task is 
executed once, and then blocks the running thread indefinitely in 
{{ExecutorHelper::logThrowableFromAfterExecute}}, meaning further executions of 
the task won't run, and will also block the running thread from running any 
other tasks.

A quick scan of the source has shown me that these methods are used on 
HadoopScheduledThreadPoolExecutor instances in several places in the code base, 
at least in {{JobHistory}} and {{CleanerService}}, which appears to mean that 
these classes also no longer function correctly.

This message was sent by Atlassian JIRA

To unsubscribe, e-mail:
For additional commands, e-mail:

Reply via email to