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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17738) BucketCache startup is slow
Date Wed, 08 Mar 2017 05:39:38 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15900747#comment-15900747
] 

Anoop Sam John commented on HBASE-17738:
----------------------------------------

100 GB of off heap BC means we will create 25600 DBBs each of size 4 MB.

> 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
>
> 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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