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Posted to issues@hbase.apache.org by "Jieshan Bean (JIRA)" <ji...@apache.org> on 2012/05/02 05:18:58 UTC
[jira] [Commented] (HBASE-5900) HRegion#FIXED_OVERHEAD is
miscalculated in 94.
[ https://issues.apache.org/jira/browse/HBASE-5900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13266309#comment-13266309 ]
Jieshan Bean commented on HBASE-5900:
-------------------------------------
TestChangingEncoding is added just for testing FIXED_OVERHEAD. And the size of FIXED_OVERHEAD before align is needed, that's why I introduced a new variable here.
I saw the new patch in HBASE-5611 had included this change. So this patch is not needed now.
Thank you, Ted.
> HRegion#FIXED_OVERHEAD is miscalculated in 94.
> ----------------------------------------------
>
> Key: HBASE-5900
> URL: https://issues.apache.org/jira/browse/HBASE-5900
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 0.94.0
> Reporter: Jieshan Bean
> Assignee: Jieshan Bean
> Fix For: 0.94.1
>
> Attachments: HRegion-FIEED_OVERHEAD.patch
>
>
> After apply the patch of HBASE-5611, and tested on a 32-bit machine. This problem was triggered.
> Before this patch, TestHeapSize is passed by pure coincidence in 94.
> {noformat}
> public static final long FIXED_OVERHEAD = ClassSize.align(
> ClassSize.OBJECT +
> ClassSize.ARRAY +
> 30 * ClassSize.REFERENCE + Bytes.SIZEOF_INT +
> (6 * Bytes.SIZEOF_LONG) +
> Bytes.SIZEOF_BOOLEAN);
> {noformat}
> Actually, there are 31 REFERENCEs and 5 LONGs in HRegion.
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