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https://issues.apache.org/jira/browse/BEAM-9474?focusedWorklogId=400418&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-400418
]
ASF GitHub Bot logged work on BEAM-9474:
----------------------------------------
Author: ASF GitHub Bot
Created on: 09/Mar/20 22:34
Start Date: 09/Mar/20 22:34
Worklog Time Spent: 10m
Work Description: mxm commented on pull request #11084: [BEAM-9474]
Improve robustness of BundleFactory and ProcessEnvironment
URL: https://github.com/apache/beam/pull/11084#discussion_r389998590
##########
File path:
runners/java-fn-execution/src/main/java/org/apache/beam/runners/fnexecution/control/DefaultJobBundleFactory.java
##########
@@ -166,11 +168,20 @@ public static DefaultJobBundleFactory create(
CacheBuilder.newBuilder()
.removalListener(
(RemovalNotification<Environment, WrappedSdkHarnessClient>
notification) -> {
- int refCount = notification.getValue().unref();
- LOG.debug(
- "Removed environment {} with {} remaining bundle
references.",
- notification.getKey(),
- refCount);
+ WrappedSdkHarnessClient client = notification.getValue();
+ int refCount = client.unref();
+ // Double-check to trigger closing of all environments in
case the "refing" does
+ // not clean them up during operator shutdown. This is
necessary in some
+ // situations, e.g when the bundle cannot be closed and thus
the ref cannot be
+ // released. All environment types ensure they can only be
closed once.
+ if (refCount > 0) {
+ LOG.warn(
+ "Clearing remaining {} bundle references from
environment {} to ensure it shuts down.",
+ refCount,
+ notification.getKey());
+ //noinspection StatementWithEmptyBody
Review comment:
Just to inform when there were still references. The comment is to suppress
a warning on the while loop which counts down the refs.
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Issue Time Tracking
-------------------
Worklog Id: (was: 400418)
Time Spent: 1h 40m (was: 1.5h)
> Environment cleanup is not robust enough and may leak resources
> ---------------------------------------------------------------
>
> Key: BEAM-9474
> URL: https://issues.apache.org/jira/browse/BEAM-9474
> Project: Beam
> Issue Type: Bug
> Components: java-fn-execution
> Reporter: Maximilian Michels
> Assignee: Maximilian Michels
> Priority: Major
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> The cleanup code in {{DefaultJobBundleFactory}} and its {{RemoteEnvironment}}
> s may leak resources. This is especially a concern when the execution engines
> reuses the same JVM or underlying machines for multiple runs of a pipeline.
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