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https://issues.apache.org/jira/browse/HBASE-15314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15185544#comment-15185544
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Daniel Pol commented on HBASE-15314:
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If I understand the code correctly, you fill one file before you switch to the
next one. For performance reasons I would recommend filling all files at once
in parallel. Take for example a 100GB bucketcache on 4 files (25GB per file),
each file on a separate physical disk. If your bucketcache usedsize is only
20GB you get the performance of a single physical disk with the proposed patch.
If you use all files in parallel you get the performance of all 4 disks.
> 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: Amal Joshy
> Attachments: HBASE-15314.patch
>
>
> Allow bucketcache use more than just one backing file: e.g. chassis has more
> than one SSD in it.
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