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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2020/04/09 03:53:56 UTC
[GitHub] [flink] wenlong88 opened a new pull request #11679:
[FLINK-16864][metrics] Add IdleTime metric for task.
wenlong88 opened a new pull request #11679: [FLINK-16864][metrics] Add IdleTime metric for task.
URL: https://github.com/apache/flink/pull/11679
## What is the purpose of the change
This pr adds an IdleTime metric which measures idle time of a task including the time cost for mail processor to wait for new mail and the time cost in record writer to waiting a new buffer.
1. when a job can not catch up with the speed of data generating, the vertex which idle time is near to zero is the bottle neck of the job.
2. when a job is not busy, idle time can be used to guide user how much he can scale down the job.
## Brief change log
A meter metrics named idleTimeMsPerSecond is added in TaskIOMetricGroup:
- *idleTime contains time waiting mail and time waiting output buffer. *
- *waiting mail time is collected when mail processor is trying to process a new mail but no mail submitted.*
- *waiting output buffer time is collected when record writer is trying to request a new buffer from result partition but no buffer available.*
in addition to https://github.com/apache/flink/pull/11564 to fix unstable test in https://issues.apache.org/jira/browse/FLINK-17053 and https://issues.apache.org/jira/browse/FLINK-17054:
- testClearBuffersAfterInterruptDuringBlockingBufferRequest is refactored so that it is not depends Mock Class.
- only check valid idle time collected(idleTime > 0) in ut instead of exactly idle time to avoid race condition affects result of test.
## Verifying this change
This change is already covered by existing tests, such as
- *TaskIOMetricGroupTest*
- *RecordWriterTest*
- *TaskMailboxProcessorTest*
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): no
- The public API, i.e., is any changed class annotated with `@Public(Evolving)`: no
- The serializers: no
- The runtime per-record code paths (performance sensitive): no
- Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: no
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? yes
- If yes, how is the feature documented? docs
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[GitHub] [flink] flinkbot edited a comment on issue #11679:
[FLINK-16864][metrics] Add IdleTime metric for task.
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on issue #11679: [FLINK-16864][metrics] Add IdleTime metric for task.
URL: https://github.com/apache/flink/pull/11679#issuecomment-611318400
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## CI report:
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[GitHub] [flink] flinkbot edited a comment on issue #11679:
[FLINK-16864][metrics] Add IdleTime metric for task.
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on issue #11679: [FLINK-16864][metrics] Add IdleTime metric for task.
URL: https://github.com/apache/flink/pull/11679#issuecomment-611318400
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[GitHub] [flink] flinkbot commented on issue #11679: [FLINK-16864][metrics]
Add IdleTime metric for task.
Posted by GitBox <gi...@apache.org>.
flinkbot commented on issue #11679: [FLINK-16864][metrics] Add IdleTime metric for task.
URL: https://github.com/apache/flink/pull/11679#issuecomment-611314262
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## Automated Checks
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[GitHub] [flink] flinkbot commented on issue #11679: [FLINK-16864][metrics]
Add IdleTime metric for task.
Posted by GitBox <gi...@apache.org>.
flinkbot commented on issue #11679: [FLINK-16864][metrics] Add IdleTime metric for task.
URL: https://github.com/apache/flink/pull/11679#issuecomment-611318400
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[GitHub] [flink] flinkbot edited a comment on issue #11679:
[FLINK-16864][metrics] Add IdleTime metric for task.
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on issue #11679: [FLINK-16864][metrics] Add IdleTime metric for task.
URL: https://github.com/apache/flink/pull/11679#issuecomment-611318400
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[GitHub] [flink] flinkbot edited a comment on issue #11679:
[FLINK-16864][metrics] Add IdleTime metric for task.
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on issue #11679: [FLINK-16864][metrics] Add IdleTime metric for task.
URL: https://github.com/apache/flink/pull/11679#issuecomment-611318400
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[GitHub] [flink] flinkbot edited a comment on issue #11679:
[FLINK-16864][metrics] Add IdleTime metric for task.
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on issue #11679: [FLINK-16864][metrics] Add IdleTime metric for task.
URL: https://github.com/apache/flink/pull/11679#issuecomment-611318400
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[GitHub] [flink] flinkbot edited a comment on issue #11679:
[FLINK-16864][metrics] Add IdleTime metric for task.
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on issue #11679: [FLINK-16864][metrics] Add IdleTime metric for task.
URL: https://github.com/apache/flink/pull/11679#issuecomment-611318400
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## CI report:
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[GitHub] [flink] pnowojski merged pull request #11679:
[FLINK-16864][metrics] Add IdleTime metric for task.
Posted by GitBox <gi...@apache.org>.
pnowojski merged pull request #11679: [FLINK-16864][metrics] Add IdleTime metric for task.
URL: https://github.com/apache/flink/pull/11679
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[GitHub] [flink] pnowojski commented on issue #11679: [FLINK-16864][metrics]
Add IdleTime metric for task.
Posted by GitBox <gi...@apache.org>.
pnowojski commented on issue #11679: [FLINK-16864][metrics] Add IdleTime metric for task.
URL: https://github.com/apache/flink/pull/11679#issuecomment-611341172
Thanks for the quick fix @wenlong88. Let's wait for the Azure/Travis to complete. Also before merging we should squash those two commits together.
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[GitHub] [flink] flinkbot edited a comment on issue #11679:
[FLINK-16864][metrics] Add IdleTime metric for task.
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on issue #11679: [FLINK-16864][metrics] Add IdleTime metric for task.
URL: https://github.com/apache/flink/pull/11679#issuecomment-611318400
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## CI report:
* 9cd7e32a68f82470bc05735009c1c0377d066d44 Travis: [SUCCESS](https://travis-ci.com/github/flink-ci/flink/builds/159527732) Azure: [SUCCESS](https://dev.azure.com/rmetzger/5bd3ef0a-4359-41af-abca-811b04098d2e/_build/results?buildId=7254)
* 5ee392b49a859ba781cd202e41eb8ed6f6e91eec Travis: [PENDING](https://travis-ci.com/github/flink-ci/flink/builds/159538950) Azure: [PENDING](https://dev.azure.com/rmetzger/5bd3ef0a-4359-41af-abca-811b04098d2e/_build/results?buildId=7258)
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[GitHub] [flink] wenlong88 commented on issue #11679: [FLINK-16864][metrics]
Add IdleTime metric for task.
Posted by GitBox <gi...@apache.org>.
wenlong88 commented on issue #11679: [FLINK-16864][metrics] Add IdleTime metric for task.
URL: https://github.com/apache/flink/pull/11679#issuecomment-611357905
@pnowojski thanks for reviewing again. Tests on Travis have passed, so I merged the two commits.
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