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https://issues.apache.org/jira/browse/HBASE-3287?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Gray resolved HBASE-3287.
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Resolution: Fixed
Release Note: Introduces two new configuration parameters:
hbase.rs.cacheblocksonwrite (default: false) which will pre-cache all blocks of
a file into the block cache as it is written, and hbase.rs.evictblocksonclose
(default: true) which will evict all blocks of a file from the block cache when
a file is closed on a RS.
Hadoop Flags: [Reviewed]
Committed to trunk. I'm going to be using this in prod atop 0.90 but since
it's really a new feature I've left it out of 0.90 tree for now.
Filed HBASE-3288 to make this configurable at the family level (something I
don't need yet but we should support eventually).
> Add option to cache blocks on hfile write and evict blocks on hfile close
> -------------------------------------------------------------------------
>
> Key: HBASE-3287
> URL: https://issues.apache.org/jira/browse/HBASE-3287
> Project: HBase
> Issue Type: Improvement
> Components: io, regionserver
> Affects Versions: 0.90.0
> Reporter: Jonathan Gray
> Assignee: Jonathan Gray
> Fix For: 0.92.0
>
> Attachments: HBASE-3287-FINAL-trunk.patch
>
>
> This issue is about adding configuration options to add/remove from the block
> cache when creating/closing files. For use cases with lots of flushing and
> compacting, this might be desirable to prevent cache misses and maximize the
> effective utilization of total block cache capacity.
> The first option, {{hbase.rs.cacheblocksonwrite}}, will make it so we
> pre-cache blocks as we are writing out new files.
> The second option, {{hbase.rs.evictblocksonclose}}, will make it so we evict
> blocks when files are closed.
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