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Posted to issues@hbase.apache.org by "Anoop Sam John (JIRA)" <ji...@apache.org> on 2017/06/06 11:50:18 UTC

[jira] [Commented] (HBASE-17738) BucketCache startup is slow

    [ https://issues.apache.org/jira/browse/HBASE-17738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16038702#comment-16038702 ] 

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

bq.Using unsafe directly is also a way to make the start up faster. You mean that is not needed?
Yes. When we have multi threaded way of making the 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
>    Affects Versions: 2.0.0
>            Reporter: stack
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 2.0.0
>
>         Attachments: HBASE-17738_2.patch, HBASE-17738_2.patch, HBASE-17738_3.patch, HBASE-17738_4.patch, 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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