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https://issues.apache.org/jira/browse/STORM-569?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14220918#comment-14220918
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ASF GitHub Bot commented on STORM-569:
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GitHub user kishorvpatil opened a pull request:
https://github.com/apache/storm/pull/324
[STORM-569] Add Configuration to enable/disable Bolt's outgoing
overflow-buffer
- Added topology level flag
`topology.bolts.outgoing.overflow.buffer.enable` - which defaults to `true`
- Create bolt's overflow buffer only if
`topology.bolts.outgoing.overflow.buffer.enable` is set
- tested manually using topology with cyclic flow for below scenarios for
both
- When set to`false` executors hit live-lock and get restarted as
`DisruptorQueue` get full
- When set to `true` executors use overflow buffer to handle spikes and
instead of live-lock, they consume more memory.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/kishorvpatil/incubator-storm config-obuffer
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/storm/pull/324.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #324
----
commit ccef637701f8dfa88ad2aaa6933549267ece1b0a
Author: Kishor Patil <kpa...@yahoo-inc.com>
Date: 2014-11-21T13:34:52Z
Add Configuration to enable/disable Bolt's outgoing overflow-buffer
----
> Add Configuration to enable/disable Bolt's outgoing overflow-buffer
> -------------------------------------------------------------------
>
> Key: STORM-569
> URL: https://issues.apache.org/jira/browse/STORM-569
> Project: Apache Storm
> Issue Type: Improvement
> Affects Versions: 0.10.0
> Reporter: Kishor Patil
> Assignee: Kishor Patil
>
> Add Configuration to enable/disable Bolt's outgoing overflow-buffer. This
> needs to be disabled by default. It would be useful only incase of topologies
> that have cyclic tuple flow causing livelocks. Refer to STORM-292
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