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https://issues.apache.org/jira/browse/HBASE-15314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15939639#comment-15939639
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Anoop Sam John commented on HBASE-15314:
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+1 to backport this to branch-1
> Allow more than one backing file in bucketcache
> -----------------------------------------------
>
> Key: HBASE-15314
> URL: https://issues.apache.org/jira/browse/HBASE-15314
> Project: HBase
> Issue Type: Sub-task
> Components: BucketCache
> Reporter: stack
> Assignee: chunhui shen
> Fix For: 2.0
>
> Attachments: FileIOEngine.java, HBASE-15314.master.001.patch,
> HBASE-15314.master.001.patch, HBASE-15314.patch, HBASE-15314-v2.patch,
> HBASE-15314-v3.patch, HBASE-15314-v4.patch, HBASE-15314-v5.patch,
> HBASE-15314-v6.patch, HBASE-15314-v7.patch, HBASE-15314-v8.patch
>
>
> Allow bucketcache use more than just one backing file: e.g. chassis has more
> than one SSD in it.
> Usage (Setting the following configurations in hbase-site.xml):
> {quote}
> <property>
> <name>hbase.bucketcache.ioengine</name>
>
> <value>files:/mnt/disk1/bucketcache,/mnt/disk2/bucketcache,/mnt/disk3/bucketcache,/mnt/disk4/bucketcache</value>
> </property>
> <property>
> <name>hbase.bucketcache.size</name>
> <value>1048576</value>
> </property>
> {quote}
> The above setting means the total capacity of cache is 1048576MB(1TB), each
> file length will be set to 0.25TB.
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