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https://issues.apache.org/jira/browse/CASSANDRA-15214?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benedict updated CASSANDRA-15214:
---------------------------------
Severity: Normal
Complexity: Low Hanging Fruit
Discovered By: Code Inspection
Bug Category: Parent values: Availability(12983)Level 1 values: Process
Crash(12992)
Status: Open (was: Triage Needed)
> OOMs caught and not rethrown
> ----------------------------
>
> Key: CASSANDRA-15214
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15214
> Project: Cassandra
> Issue Type: Bug
> Components: Messaging/Client, Messaging/Internode
> Reporter: Benedict
> Priority: Normal
>
> Netty (at least, and perhaps elsewhere in Executors) catches all exceptions,
> so presently there is no way to ensure that an OOM reaches the JVM handler to
> trigger a crash/heapdump.
> It may be that the simplest most consistent way to do this would be to have a
> single thread spawned at startup that waits for any exceptions we must
> propagate to the Runtime.
> We could probably submit a patch upstream to Netty, but for a guaranteed
> future proof approach, it may be worth paying the cost of a single thread.
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