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Posted to issues@beam.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2019/11/06 13:19:00 UTC
[jira] [Work logged] (BEAM-8566) Checkpoint buffer is flushed
prematurely when another bundle is started during checkpointing
[ https://issues.apache.org/jira/browse/BEAM-8566?focusedWorklogId=339345&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-339345 ]
ASF GitHub Bot logged work on BEAM-8566:
----------------------------------------
Author: ASF GitHub Bot
Created on: 06/Nov/19 13:18
Start Date: 06/Nov/19 13:18
Worklog Time Spent: 10m
Work Description: mxm commented on pull request #10007: [BEAM-8566] Fix checkpoint buffering when when another bundle is started during checkpointing
URL: https://github.com/apache/beam/pull/10007
As part of a checkpoint, the current bundle is finalized. When the bundle is
finalized, the watermark, currently held back, may also be progressed which can
cause the start of another bundle. When a new bundle is started, any
to-be-buffered items from the previous bundle for the pending checkpoint may be
emitted. This should not happen.
This only effects portable pipelines where we have to hold back the watermark
due to the asynchronous processing of elements.
Post-Commit Tests Status (on master branch)
------------------------------------------------------------------------------------------------
Lang | SDK | Apex | Dataflow | Flink | Gearpump | Samza | Spark
--- | --- | --- | --- | --- | --- | --- | ---
Go | [](https://builds.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/) | --- | --- | [](https://builds.apache.org/job/beam_PostCommit_Go_VR_Flink/lastCompletedBuild/) | --- | --- | [](https://builds.apache.org/job/beam_PostCommit_Go_VR_Spark/lastCompletedBuild/)
Java | [](https://builds.apache.org/job/beam_PostCommit_Java/lastCompletedBuild/) | [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Apex/lastCompletedBuild/) | [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow/lastCompletedBuild/) | [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Java_PVR_Flink_Batch/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Java_PVR_Flink_Streaming/lastCompletedBuild/) | [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Gearpump/lastCompletedBuild/) | [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Samza/lastCompletedBuild/) | [](https://builds.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Spark/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Java_PVR_Spark_Batch/lastCompletedBuild/)
Python | [](https://builds.apache.org/job/beam_PostCommit_Python2/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Python35/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Python36/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Python37/lastCompletedBuild/) | --- | [](https://builds.apache.org/job/beam_PostCommit_Py_VR_Dataflow/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Py_ValCont/lastCompletedBuild/) | [](https://builds.apache.org/job/beam_PreCommit_Python2_PVR_Flink_Cron/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PostCommit_Python35_VR_Flink/lastCompletedBuild/) | --- | --- | [](https://builds.apache.org/job/beam_PostCommit_Python_VR_Spark/lastCompletedBuild/)
XLang | --- | --- | --- | [](https://builds.apache.org/job/beam_PostCommit_XVR_Flink/lastCompletedBuild/) | --- | --- | ---
Pre-Commit Tests Status (on master branch)
------------------------------------------------------------------------------------------------
--- |Java | Python | Go | Website
--- | --- | --- | --- | ---
Non-portable | [](https://builds.apache.org/job/beam_PreCommit_Java_Cron/lastCompletedBuild/) | [](https://builds.apache.org/job/beam_PreCommit_Python_Cron/lastCompletedBuild/)<br>[](https://builds.apache.org/job/beam_PreCommit_PythonLint_Cron/lastCompletedBuild/) | [](https://builds.apache.org/job/beam_PreCommit_Go_Cron/lastCompletedBuild/) | [](https://builds.apache.org/job/beam_PreCommit_Website_Cron/lastCompletedBuild/)
Portable | --- | [](https://builds.apache.org/job/beam_PreCommit_Portable_Python_Cron/lastCompletedBuild/) | --- | ---
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Issue Time Tracking
-------------------
Worklog Id: (was: 339345)
Remaining Estimate: 0h
Time Spent: 10m
> Checkpoint buffer is flushed prematurely when another bundle is started during checkpointing
> --------------------------------------------------------------------------------------------
>
> Key: BEAM-8566
> URL: https://issues.apache.org/jira/browse/BEAM-8566
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Reporter: Maximilian Michels
> Assignee: Maximilian Michels
> Priority: Major
> Fix For: 2.18.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> As part of a checkpoint, the current bundle is finalized. When the bundle is finalized, the watermark, currently held back, may also be progressed which can cause the start of another bundle. When a new bundle is started, any to-be-buffered items from the previous bundle for the pending checkpoint may be emitted. This should not happen.
> This only effects portable pipelines where we have to hold back the watermark due to the asynchronous processing of elements.
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