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https://issues.apache.org/jira/browse/CASSANDRA-15013?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16873870#comment-16873870
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Sumanth Pasupuleti edited comment on CASSANDRA-15013 at 6/27/19 7:12 AM:
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+1 on the suggestions [~benedict]. I have applied your commit on my
[branch|https://github.com/sumanth-pasupuleti/cassandra/commits/15013_trunk_2]
and ran the tests.
UTs and JVM DTests pass. All Dtests pass except for 6 failures which seem
unrelated.
https://circleci.com/workflow-run/04b77dd7-7dca-49d4-8328-e55b357fcca6
was (Author: sumanth.pasupuleti):
+1 on the suggestions [~benedict]. I have applied your commit on my branch and
ran the tests.
UTs and JVM DTests pass. All Dtests pass except for 6 failures which seem
unrelated.
https://circleci.com/workflow-run/04b77dd7-7dca-49d4-8328-e55b357fcca6
> Message Flusher queue can grow unbounded, potentially running JVM out of
> memory
> -------------------------------------------------------------------------------
>
> Key: CASSANDRA-15013
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15013
> Project: Cassandra
> Issue Type: Bug
> Components: Messaging/Client
> Reporter: Sumanth Pasupuleti
> Assignee: Sumanth Pasupuleti
> Priority: Normal
> Labels: pull-request-available
> Fix For: 4.0, 3.0.x, 3.11.x
>
> Attachments: BlockedEpollEventLoopFromHeapDump.png,
> BlockedEpollEventLoopFromThreadDump.png, RequestExecutorQueueFull.png, heap
> dump showing each ImmediateFlusher taking upto 600MB.png
>
>
> This is a follow-up ticket out of CASSANDRA-14855, to make the Flusher queue
> bounded, since, in the current state, items get added to the queue without
> any checks on queue size, nor with any checks on netty outbound buffer to
> check the isWritable state.
> We are seeing this issue hit our production 3.0 clusters quite often.
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