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From Vitalii Tymchyshyn <>
Subject Re: Server crashed due to "OutOfMemoryError: Java heap space"
Date Tue, 28 Feb 2012 15:12:43 GMT

Any messages about GC earlier in the logs? Cassandra server monitors 
memory and starts complaining in advance if memory gets full.
Any chance you've got a full key delete-only scenario for some column 
families? Cassandra has a bug not being able to flush such memtables. 
I've filled a bug with patch on the issue.

24.02.12 23:14, Feng Qu ???????(??):
> Hello,
> We have a 6-node ring running 0.8.6 on RHEL 6.1. The first node also 
> runs OpsCenter community. This node has crashed few time recently with 
> "OutOfMemoryError: Java heap space" while several compactions on few 
> 200-300 GB SSTables were running. We are using 8GB Java heap on host 
> with 96GB RAM.
> I would appreciate for help to figure out the root cause and solution.
> Feng Qu

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