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https://issues.apache.org/jira/browse/GEARPUMP-358?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16209161#comment-16209161
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ASF GitHub Bot commented on GEARPUMP-358:
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GitHub user huafengw opened a pull request:
https://github.com/apache/incubator-gearpump/pull/232
[GEARPUMP-358] Decrease the frequency of watermark calculation
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- [ ] Make sure the commit message is formatted like:
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- [ ] Make sure tests pass via `sbt clean test`.
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You can merge this pull request into a Git repository by running:
$ git pull https://github.com/huafengw/incubator-gearpump regre
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-gearpump/pull/232.patch
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This closes #232
----
commit 3456bfcfe1fa643f37dedbb88c6e4090d6df5823
Author: huafengw <[email protected]>
Date: 2017-10-18T11:19:44Z
[GEARPUMP-358] Decrease the frequency of watermark calculation
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> Performance regression due to costly watermark calculation
> ----------------------------------------------------------
>
> Key: GEARPUMP-358
> URL: https://issues.apache.org/jira/browse/GEARPUMP-358
> Project: Apache Gearpump
> Issue Type: Bug
> Reporter: Huafeng Wang
>
> For example, in streaming example SOL, everytime SOLStreamProducer output a
> message to downstream, it will send a Watermark message to itself, which will
> trigger watermark calculation. We should avoid flooding Watermark messages.
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