[
https://issues.apache.org/jira/browse/BEAM-4778?focusedWorklogId=126756&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-126756
]
ASF GitHub Bot logged work on BEAM-4778:
----------------------------------------
Author: ASF GitHub Bot
Created on: 24/Jul/18 17:36
Start Date: 24/Jul/18 17:36
Worklog Time Spent: 10m
Work Description: angoenka commented on a change in pull request #5958:
[BEAM-4778] add option to flink job server to clean staged artifacts per-job
URL: https://github.com/apache/beam/pull/5958#discussion_r204844344
##########
File path:
runners/flink/src/main/java/org/apache/beam/runners/flink/FlinkJobServerDriver.java
##########
@@ -139,6 +145,10 @@ private InMemoryJobService createJobService() throws
IOException {
throw new RuntimeException(exn);
}
},
+ configuration.cleanArtifactsPerJob ?
+ (String stagingSessionToken) ->
+
artifactStagingService.getService().removeArtifacts(stagingSessionToken)
+ : null,
Review comment:
This will throw NullPointer on accept call if
configuration.cleanArtifactsPerJob is false.
I was suggesting:
```
(String stagingSessionToken) -> if(configuration.cleanArtifactsPerJob)
artifactStagingService.getService().removeArtifacts(stagingSessionToken)
```
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Issue Time Tracking
-------------------
Worklog Id: (was: 126756)
Time Spent: 3h 40m (was: 3.5h)
> 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: 3h 40m
> 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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