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https://issues.apache.org/jira/browse/GEARPUMP-358?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16209175#comment-16209175
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ASF GitHub Bot commented on GEARPUMP-358:
-----------------------------------------
Github user codecov-io commented on the issue:
https://github.com/apache/incubator-gearpump/pull/232
#
[Codecov](https://codecov.io/gh/apache/incubator-gearpump/pull/232?src=pr&el=h1)
Report
> Merging
[#232](https://codecov.io/gh/apache/incubator-gearpump/pull/232?src=pr&el=desc)
into
[master](https://codecov.io/gh/apache/incubator-gearpump/commit/175b08e64c3363a2da9c61e05dac5f01d1f8db2d?src=pr&el=desc)
will **decrease** coverage by `0.04%`.
> The diff coverage is `40%`.
```diff
@@ Coverage Diff @@
## master #232 +/- ##
==========================================
- Coverage 69.01% 68.96% -0.05%
==========================================
Files 191 191
Lines 6119 6123 +4
Branches 358 357 -1
==========================================
Hits 4223 4223
- Misses 1896 1900 +4
```
> 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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