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https://issues.apache.org/jira/browse/CASSANDRA-6056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13770953#comment-13770953
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Jonathan Ellis commented on CASSANDRA-6056:
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This sounds a lot like CASSANDRA-5982. You should have a look at that,
especially if you're throwing large blobs around. If not, you should put some
effort into describing what makes your workload special.
> Heavy write load exhausts heap space
> ------------------------------------
>
> Key: CASSANDRA-6056
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6056
> Project: Cassandra
> Issue Type: Bug
> Environment: Debian, Cassandra 2.0
> Reporter: arnaud-lb
>
> Issuing many INSERT or UPDATE queries cause cassandra to exhaust the heap
> space in a few minutes. It then gets stuck in full GCs, failing to recover.
> Observed with the default config from Datastax Debian packages, with a 8GB
> heap. Query rate is around 35K queries per second, with 16 concurrent queries.
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