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Posted to dev@apex.apache.org by "bright chen (JIRA)" <ji...@apache.org> on 2016/11/01 17:21:58 UTC
[jira] [Commented] (APEXMALHAR-2321) Improve Buckets memory
management
[ https://issues.apache.org/jira/browse/APEXMALHAR-2321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15626054#comment-15626054 ]
bright chen commented on APEXMALHAR-2321:
-----------------------------------------
except release memory managed by SerializationBuffer, Other resources such as map also need to be released
> Improve Buckets memory management
> ---------------------------------
>
> Key: APEXMALHAR-2321
> URL: https://issues.apache.org/jira/browse/APEXMALHAR-2321
> Project: Apache Apex Malhar
> Issue Type: Improvement
> Reporter: bright chen
> Assignee: bright chen
>
> Currently buckets were managed as an array. Each bucket have memory limitation, and free memory will be triggered if the bucket memory usage over the limitation.
> - For ManagedTimeUnifiedStateImpl, the default bucket number is 345600, which probably too large.
> - AbstractManagedStateImpl.maxMemorySize probably will be misunderstand as the max memory size of total managed state, but in fact it was used as memory size of each bucket. Better to rename it.
> - The default maxMemorySize is zero. It's better to give a default reasonable value to avoid too much garbage collection
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