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Posted to issues@hive.apache.org by "Janos Gub (JIRA)" <ji...@apache.org> on 2017/08/17 11:01:00 UTC

[jira] [Assigned] (HIVE-17344) LocalCache element memory usage is not calculated properly.

     [ https://issues.apache.org/jira/browse/HIVE-17344?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Janos Gub reassigned HIVE-17344:
--------------------------------


> LocalCache element memory usage is not calculated properly.
> -----------------------------------------------------------
>
>                 Key: HIVE-17344
>                 URL: https://issues.apache.org/jira/browse/HIVE-17344
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Janos Gub
>            Assignee: Janos Gub
>
> Orc footer cache has a calculation of memory usage:
> {code:java}
> public int getMemoryUsage() {
>   return bb.remaining() + 100; // 100 is for 2 longs, BB and java overheads (semi-arbitrary).
> }
> {code}
> ByteBuffer.remaining returns the remaining space in the bytebuffer, thus allowing this cache to grow until MAXSIZE/100. I think the correct solution would be bb.capacity.



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