[ https://issues.apache.org/jira/browse/CASSANDRA-15214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17463991#comment-17463991 ]
Yifan Cai edited comment on CASSANDRA-15214 at 12/22/21, 5:59 PM: ------------------------------------------------------------------ [~paulo], your suggestion makes sense. The synthetic heap OOM assumes users run cassandra with the on OOM flags. So it is reasonable to check the existence of the related options. I started a separate ticket: CASSANDRA-17227. Would the JVM result into a worse state due to the synthetic heap OOM? Probably not. The (actual) OOM happened and the JVM is in a bad state already. was (Author: yifanc): [~paulo], your suggestion makes sense. The synthetic heap OOM assumes users run cassandra with the on OOM flags. So it is reasonable to check the existence of the related options. I will start a separate ticket. Would the JVM result into a worse state due to the synthetic heap OOM? Probably not. The (actual) OOM happened and the JVM is in a bad state already. > Internode messaging catches OOMs and does not rethrow > ----------------------------------------------------- > > Key: CASSANDRA-15214 > URL: https://issues.apache.org/jira/browse/CASSANDRA-15214 > Project: Cassandra > Issue Type: Bug > Components: Messaging/Client, Messaging/Internode > Reporter: Benedict Elliott Smith > Assignee: Yifan Cai > Priority: Normal > Fix For: 4.0-beta4, 4.0 > > Attachments: oom-experiments.zip > > Time Spent: 1h 40m > Remaining Estimate: 0h > > 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. -- This message was sent by Atlassian Jira (v8.20.1#820001) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org