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https://issues.apache.org/jira/browse/HBASE-14061?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14645371#comment-14645371
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Andrew Purtell commented on HBASE-14061:
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bq. 'hbase.hstore.block.storage.policy'
Consider making this a first class CF schema attribute. 'STORAGE_POLICY'
perhaps?
bq. fs.getStoragePolicy cannot be easily written in reflection
Agreed, this is going to be a bit messy but I had a look at the code in the
patch and it seems doable at first glance.
We could only commit this to a branch where we're willing to set the minimum
supported Hadoop version at 2.6.0 or if the storage policy API is called
through reflection we can port the result to more places.
> Support CF-level Storage Policy
> -------------------------------
>
> Key: HBASE-14061
> URL: https://issues.apache.org/jira/browse/HBASE-14061
> Project: HBase
> Issue Type: Sub-task
> Components: HFile, regionserver
> Environment: hadoop-2.6.0
> Reporter: Victor Xu
> Assignee: Victor Xu
> Attachments: HBASE-14061-master-v1.patch
>
>
> After reading [HBASE-12848|https://issues.apache.org/jira/browse/HBASE-12848]
> and [HBASE-12934|https://issues.apache.org/jira/browse/HBASE-12934], I wrote
> a patch to implement cf-level storage policy.
> My main purpose is to improve random-read performance for some really hot
> data, which usually locates in certain column family of a big table.
> Usage:
> $ hbase shell
> > alter 'TABLE_NAME', METADATA => {'hbase.hstore.block.storage.policy' =>
> > 'POLICY_NAME'}
> > alter 'TABLE_NAME', {NAME=>'CF_NAME', METADATA =>
> > {'hbase.hstore.block.storage.policy' => 'POLICY_NAME'}}
> HDFS's setStoragePolicy can only take effect when new hfile is created in a
> configured directory, so I had to make sub directories(for each cf) in
> region's .tmp directory and set storage policy for them.
> Besides, I had to upgrade hadoop version to 2.6.0 because
> dfs.getStoragePolicy cannot be easily written in reflection, and I needed
> this api to finish my unit test.
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