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https://issues.apache.org/jira/browse/HBASE-17738?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ramkrishna.s.vasudevan updated HBASE-17738:
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Attachment: HBASE-17738.patch
Patch that speeds up the start up process of bucket cache.
75G bucket cache just starts in 7 secs whereas previously it takes 24 secs.
100G bucket cache starts in 10 secs whereas it took 40secs previously.
Added a TODO in the patch to see if we need to make things configurable
regarding the thread pool that does this init.
Will once try this FileMMap engine to see what happens if parallely we try to
allocate mmaped BBs.
> BucketCache startup is slow
> ---------------------------
>
> Key: HBASE-17738
> URL: https://issues.apache.org/jira/browse/HBASE-17738
> Project: HBase
> Issue Type: Sub-task
> Components: BucketCache
> Reporter: stack
> Assignee: ramkrishna.s.vasudevan
> Attachments: HBASE-17738.patch
>
>
> If you set bucketcache size at 64G say and then start hbase, it takes a long
> time. Can we do the allocations in parallel and not inline with the server
> startup?
> Related, prefetching on a bucketcache is slow. Speed it up.
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