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https://issues.apache.org/jira/browse/HBASE-6728?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13482821#comment-13482821
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Lars Hofhansl commented on HBASE-6728:
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That might be, but it will hang that RegionServer forever, no? An OOM would
have been preferable in that (it would cause an alert)
Unless that is explained (maybe I am misreading the patch) or addressed soon, I
would prefer backing this change out again.
> [89-fb] prevent OOM possibility due to per connection responseQueue being
> unbounded
> -----------------------------------------------------------------------------------
>
> Key: HBASE-6728
> URL: https://issues.apache.org/jira/browse/HBASE-6728
> Project: HBase
> Issue Type: Bug
> Reporter: Kannan Muthukkaruppan
> Assignee: Michal Gregorczyk
> Fix For: 0.94.3, 0.96.0
>
> Attachments: 6728.94, 6728-trunk.txt
>
>
> The per connection responseQueue is an unbounded queue. The request handler
> threads today try to send the response in line, but if things start to
> backup, the response is sent via a per connection responder thread. This
> intermediate queue, because it has no bounds, can be another source of OOMs.
> [Have not looked at this issue in trunk. So it may or may not be applicable
> there.]
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