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From "Manikumar (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (KAFKA-4840) There are are still cases where producer buffer pool will not remove waiters.
Date Tue, 22 Aug 2017 18:29:00 GMT

     [ https://issues.apache.org/jira/browse/KAFKA-4840?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Manikumar reassigned KAFKA-4840:

       Resolution: Fixed
         Assignee: Sean McCauliff
    Fix Version/s:

> There are are still cases where producer buffer pool will not remove waiters.
> -----------------------------------------------------------------------------
>                 Key: KAFKA-4840
>                 URL: https://issues.apache.org/jira/browse/KAFKA-4840
>             Project: Kafka
>          Issue Type: Bug
>          Components: clients
>    Affects Versions:
>            Reporter: Sean McCauliff
>            Assignee: Sean McCauliff
>             Fix For:
> There are several problems dealing with errors in  BufferPool.allocate(int size, long
> * The accumulated number of bytes are not put back into the available pool when an exception
happens and a thread is waiting for bytes to become available.  This will cause the capacity
of the buffer pool to decrease over time any time a timeout is hit within this method.
> * If a Throwable other than InterruptedException is thrown out of await() for some reason
or if there is an exception thrown in the corresponding finally block around the await(),
for example if waitTime.record(.....) throws an exception, then the waiters are not removed
from the waiters deque.
> * On timeout or other exception waiters could be signaled, but are not.  If no other
buffers are freed then the next waiting thread will also timeout and so on.

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