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Posted to issues@beam.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2021/05/03 10:13:00 UTC
[jira] [Work logged] (BEAM-12253)
Read.UnboundedSourceAsSDFRestrictionTracker doesn't use cache for readers
in getProgress
[ https://issues.apache.org/jira/browse/BEAM-12253?focusedWorklogId=592104&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-592104 ]
ASF GitHub Bot logged work on BEAM-12253:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 03/May/21 10:12
Start Date: 03/May/21 10:12
Worklog Time Spent: 10m
Work Description: scwhittle opened a new pull request #14704:
URL: https://github.com/apache/beam/pull/14704
Previously if there was not a currentReader it would construct a new reader
instead of consulting the cache. I factored out the cache retrieval logic from
tryClaim to share.
Also fixup some places where currentReader could be non-null after closed().
**Please** add a meaningful description for your change here
------------------------
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`ValidatesRunner` compliance status (on master branch)
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<th>ULR</th>
<th>Dataflow</th>
<th>Flink</th>
<th>Samza</th>
<th>Spark</th>
<th>Twister2</th>
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<td>Go</td>
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<a href="https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/">
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<td>Python</td>
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<td>XLang</td>
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<a href="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Direct/lastCompletedBuild/">
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<img alt="Build Status" src="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Spark/lastCompletedBuild/badge/icon">
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Examples testing status on various runners
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<th>Lang</th>
<th>ULR</th>
<th>Dataflow</th>
<th>Flink</th>
<th>Samza</th>
<th>Spark</th>
<th>Twister2</th>
</tr>
</thead>
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<td>Go</td>
<td>---</td>
<td>---</td>
<td>---</td>
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<td>Java</td>
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<a href="https://ci-beam.apache.org/job/beam_PreCommit_Java_Examples_Dataflow_Cron/lastCompletedBuild/">
<img alt="Build Status" src="https://ci-beam.apache.org/job/beam_PreCommit_Java_Examples_Dataflow_Cron/lastCompletedBuild/badge/icon?subject=V1">
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<td>XLang</td>
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</table>
Post-Commit SDK/Transform Integration Tests Status (on master branch)
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<th>Go</th>
<th>Java</th>
<th>Python</th>
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<a href="https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/">
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Pre-Commit Tests Status (on master branch)
------------------------------------------------------------------------------------------------
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<th>---</th>
<th>Java</th>
<th>Python</th>
<th>Go</th>
<th>Website</th>
<th>Whitespace</th>
<th>Typescript</th>
</tr>
</thead>
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<td>Non-portable</td>
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</tr>
</tbody>
</table>
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Issue Time Tracking
-------------------
Worklog Id: (was: 592104)
Remaining Estimate: 0h
Time Spent: 10m
> Read.UnboundedSourceAsSDFRestrictionTracker doesn't use cache for readers in getProgress
> ----------------------------------------------------------------------------------------
>
> Key: BEAM-12253
> URL: https://issues.apache.org/jira/browse/BEAM-12253
> Project: Beam
> Issue Type: Bug
> Components: sdk-java-core
> Reporter: Sam Whittle
> Assignee: Sam Whittle
> Priority: P2
> Time Spent: 10m
> Remaining Estimate: 0h
>
> https://github.com/apache/beam/blob/master/sdks/java/core/src/main/java/org/apache/beam/sdk/io/Read.java#L963
> In getProgress, if currentReader == null a new reader is constructed from the restriction checkpoint. I think that we should consult the reader cache as creating readers is sometimes expensive.
> I observed in Nexmark pipelines that readers were being created at this location.
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