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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17738) BucketCache startup is slow
Date Wed, 08 Mar 2017 05:33:43 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15900742#comment-15900742
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ramkrishna.s.vasudevan commented on HBASE-17738:
------------------------------------------------

I tried creating around 300G of ByteBuffers and it takes  more than 1 min to do it. I think
we can speed it up. But with FileCache it does not happen so I believe as it is only about
creating a file. Will check that to confirm once.

> 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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