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https://issues.apache.org/jira/browse/DIRMINA-1039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15428424#comment-15428424
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Maria Petridean commented on DIRMINA-1039:
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Ok, thanks for clarifying.
Related to your idea, reusing the empty message instance sounds good. Currently
it's not very clear to me if this "setInterestedInWrite(session, true)" is
needed when req is a MESSAGE_SENT_REQUEST. From the snippet, since you removed,
seems it's not needed. Anyway, looks good so far, I'll take a look when you'll
commit this patch. I assume will be included in 2.0 branch. Thanks again.
> Response messages queue up on the server side waiting to be written to
> socket, while the server continues to read more request messages, causing out
> of heap memory
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: DIRMINA-1039
> URL: https://issues.apache.org/jira/browse/DIRMINA-1039
> Project: MINA
> Issue Type: Bug
> Components: Core
> Reporter: Maria Petridean
> Fix For: 2.0.14
>
>
> One case in which this bug reproduces is by using a client which generates a
> heavy request-load. The mina thread which processes both reads and writes -
> exits the write cycle after processing every empty marker (the WriteRequest
> which wraps an empty buffer, acting as a message marker). This will result in
> the thread resuming the read cycle, hence reading more client request
> messages. After a few minutes, the number of read messages is much larger
> than the number of written response messages, even though the responses are
> waiting in the queue, ready to be written to socket.
> To solve this, the sever shouldn't exit the write cycle after processing
> every marker WriteRequest. This way the ratio between the read and written
> messages will be more balanced; this will avoid the heap memory getting full
> and causing server degradation.
> Also, an improvement can be considered here to avoid using the same single
> thread for both reads and writes.
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