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https://issues.apache.org/jira/browse/ARTEMIS-1025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15948877#comment-15948877
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ASF GitHub Bot commented on ARTEMIS-1025:
-----------------------------------------

Github user franz1981 commented on the issue:

    https://github.com/apache/activemq-artemis/pull/1119
  
    @clebertsuconic it uses an await with timeout on the write and flush 
promise offered by the netty channel; it has to return by (Netty) contract 
either in 2 cases:
    - timeout occurs (by default io.netty.backpressure.millis=1000 milliseconds)
    - the data are flushed 
    If it doesn't return we could have some issue on the thread pool used by 
Netty to perform the flush (the I/O threads), but is pretty strange! Anyway I 
need feedback mate, I'll ping you ASAP :+1: 


> OutOfDirectMemoryError raised from Netty
> ----------------------------------------
>
>                 Key: ARTEMIS-1025
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-1025
>             Project: ActiveMQ Artemis
>          Issue Type: Bug
>          Components: Broker
>            Reporter: Francesco Nigro
>            Assignee: Francesco Nigro
>
> If you send and receive a lot of messages in short time to Artemis via Netty 
> connector, the OutOfDirectMemoryError exception is thrown from the client.



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