[jira] [Resolved] (KAFKA-3651) Whenever the BufferPool throws a "Failed to allocate memory within the configured max blocking time" exception, it should also remove the condition object from the waiters deque

["Ismael Juma (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-3651?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ismael Juma resolved KAFKA-3651.
--------------------------------
    Resolution: Fixed

Issue resolved by pull request 1314
[https://github.com/apache/kafka/pull/1314]

> Whenever the BufferPool throws a "Failed to allocate memory within the configured max blocking time" exception, it should also remove the condition object from the waiters deque
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-3651
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3651
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Mayuresh Gharat
>            Assignee: Mayuresh Gharat
>             Fix For: 0.10.0.0
>
>
> "this.waiters.remove(moreMemory);" should happen before the exception
> is thrown.
> .Otherwise the waiting thread count will never get to 0 after the exception
> and batching will not occur. This is because in the RecordAccumulator.ready
> method the exhausted is set as
> boolean exhausted = this.free.queued() > 0 where free.queued() returns the
> waiters.size().



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