[jira] [Updated] (BEAM-4778) Less wasteful ArtifactStagingService

["Beam JIRA Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/BEAM-4778?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Beam JIRA Bot updated BEAM-4778:
--------------------------------
    Labels: stale-P2 triaged  (was: triaged)

> 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
>            Priority: P2
>              Labels: stale-P2, triaged
>          Time Spent: 6.5h
>  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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