You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@hbase.apache.org by "Duo Zhang (Jira)" <ji...@apache.org> on 2020/06/30 01:59:00 UTC
[jira] [Updated] (HBASE-24659) Calcuate FIXED_OVERHEAD
automatically
[ https://issues.apache.org/jira/browse/HBASE-24659?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Duo Zhang updated HBASE-24659:
------------------------------
Description:
Now the FIXED_OVERHEAD in some classes are maintained manually, an we have a method to TestHeapSizes to confirm that the value is correct.
But it is really hard for developers to count the fields in a complicated class like HRegion. Since we have the ability to calcuate the accurate size in UT, I think we it is also possible to calcuate it when loading the class, which is a one time operation so should not effect the performance too much.
was:
Now the FIXED_OVERHEAD in some classes are maintained manually, an we have a method to TestHeapSizes to confirm that the value is correct.
But it is really hard for developers to count the fields in a complicated class like HRegion. Since we have the ability to calcuate the accurate size in UT, I think we it is also possible to calcuate it when loading the class.
> Calcuate FIXED_OVERHEAD automatically
> -------------------------------------
>
> Key: HBASE-24659
> URL: https://issues.apache.org/jira/browse/HBASE-24659
> Project: HBase
> Issue Type: Improvement
> Reporter: Duo Zhang
> Priority: Major
>
> Now the FIXED_OVERHEAD in some classes are maintained manually, an we have a method to TestHeapSizes to confirm that the value is correct.
> But it is really hard for developers to count the fields in a complicated class like HRegion. Since we have the ability to calcuate the accurate size in UT, I think we it is also possible to calcuate it when loading the class, which is a one time operation so should not effect the performance too much.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)