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https://issues.apache.org/jira/browse/FLINK-15043?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jordan Hatcher updated FLINK-15043:
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Description: (was: We have a few flink clusters running version 1.8.2,
with a mongo 4.2 database. We initially noticed a large number (16000-19000) of
connections to the database, which we traced back to the flink task manager.
Restarting the task managers dropped this number down to a few hundred
connections. The number of database connections roughly corresponds to the
number of task manager threads as reported by the metrics API
(/taskmanagers/metrics?get=Status.JVM.Threads.Count) across a few different
clusters, so we suspect there is some kind of thread leak occurring in the task
manager. Running a few jobs through our flink workflow shows that the number of
database connections is increasing by about 50 for each job we run.)
> Possible thread leak in task manager
> ------------------------------------
>
> Key: FLINK-15043
> URL: https://issues.apache.org/jira/browse/FLINK-15043
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Task
> Affects Versions: 1.8.2
> Reporter: Jordan Hatcher
> Priority: Major
>
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