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https://issues.apache.org/jira/browse/CASSANDRA-3295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13120173#comment-13120173
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Radim Kolar commented on CASSANDRA-3295:
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It crashes on 512m if you have to do compaction with about 20 tables. If you
have to do major compaction on 400 tables in crashes even on 1G.
Cassandra 1.0 is way better on memory use than 0.8 but still 512m is not enough
for stable production operation.
> reduce default heap size
> ------------------------
>
> Key: CASSANDRA-3295
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3295
> Project: Cassandra
> Issue Type: Improvement
> Affects Versions: 1.0.0
> Reporter: Jonathan Ellis
> Assignee: satish babu krishnamoorthy
> Priority: Minor
> Fix For: 1.0.0
>
> Attachments: 3295.patch
>
>
> With off-heap caching now the default and with auto-flushed memtables
> demonstrated to do a good job with smaller heaps, I think it's time to reduce
> heap sizes to decrease GC pause times.
> How does this sound?
> - half the ram, up to 512MB, or
> - 1/4 the ram, up to 4 GB
> i.e.:
> max(min(1/2 ram, 512MB), min(1/4 ram, 4GB))
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