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https://issues.apache.org/jira/browse/BEAM-4778?focusedWorklogId=130277&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-130277
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ASF GitHub Bot logged work on BEAM-4778:
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Author: ASF GitHub Bot
Created on: 02/Aug/18 15:03
Start Date: 02/Aug/18 15:03
Worklog Time Spent: 10m
Work Description: tweise commented on issue #5958: [BEAM-4778] add option
to flink job server to clean staged artifacts per-job
URL: https://github.com/apache/beam/pull/5958#issuecomment-409958799
FYI this can be avoided by running `./gradlew spotlessApply` prior to
opening the PR.
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Issue Time Tracking
-------------------
Worklog Id: (was: 130277)
Time Spent: 6h 10m (was: 6h)
> Less wasteful ArtifactStagingService
> ------------------------------------
>
> Key: BEAM-4778
> URL: https://issues.apache.org/jira/browse/BEAM-4778
> Project: Beam
> Issue Type: Bug
> Components: runner-core
> Reporter: Eugene Kirpichov
> Assignee: Ryan Williams
> Priority: Major
> Time Spent: 6h 10m
> Remaining Estimate: 0h
>
> [https://github.com/apache/beam/blob/master/runners/java-fn-execution/src/main/java/org/apache/beam/runners/fnexecution/artifact/BeamFileSystemArtifactStagingService.java]
> is the main implementation of ArtifactStagingService.
> It stages artifacts into a directory; and in practice the passed staging
> session token is such that the directory is different for every job. This
> leads to 2 issues:
> * It doesn't get cleaned up when the job finishes or even when the
> JobService shuts down, so we have disk space leaks if running a lot of jobs
> (e.g. a suite of ValidatesRunner tests)
> * We repeatedly re-stage the same artifacts. Instead, ideally, we should
> identify that some artifacts don't need to be staged - based on knowing their
> md5. The artifact staging protocol has rudimentary support for this but may
> need to be modified.
> CC: [~angoenka]
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