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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2018/02/01 21:44:00 UTC
[jira] [Commented] (HBASE-18294) Reduce global heap pressure: flush
based on heap occupancy
[ https://issues.apache.org/jira/browse/HBASE-18294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16349327#comment-16349327 ]
stack commented on HBASE-18294:
-------------------------------
[~eshcar] Looks like there is a blocking item up on rb....from our Anoop?
> Reduce global heap pressure: flush based on heap occupancy
> ----------------------------------------------------------
>
> Key: HBASE-18294
> URL: https://issues.apache.org/jira/browse/HBASE-18294
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 3.0.0
> Reporter: Eshcar Hillel
> Assignee: Eshcar Hillel
> Priority: Major
> Fix For: 2.0.0-beta-2
>
> Attachments: HBASE-18294.01.patch, HBASE-18294.01.patch, HBASE-18294.01.patch, HBASE-18294.01.patch, HBASE-18294.02.patch, HBASE-18294.03.patch, HBASE-18294.04.patch, HBASE-18294.05.patch, HBASE-18294.06.patch, HBASE-18294.07.patch, HBASE-18294.07.patch, HBASE-18294.08.patch, HBASE-18294.09.patch, HBASE-18294.10.patch, HBASE-18294.11.patch, HBASE-18294.11.patch, HBASE-18294.12.patch, HBASE-18294.13.patch, HBASE-18294.15.patch, HBASE-18294.16.patch, HBASE-18294.master.01.patch
>
>
> A region is flushed if its memory component exceed a threshold (default size is 128MB).
> A flush policy decides whether to flush a store by comparing the size of the store to another threshold (that can be configured with hbase.hregion.percolumnfamilyflush.size.lower.bound).
> Currently the implementation (in both cases) compares the data size (key-value only) to the threshold where it should compare the heap size (which includes index size, and metadata).
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