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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17738) BucketCache startup is slow
Date Wed, 19 Jul 2017 21:17:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16093797#comment-16093797
] 

Hudson commented on HBASE-17738:
--------------------------------

FAILURE: Integrated in Jenkins build HBase-2.0 #201 (See [https://builds.apache.org/job/HBase-2.0/201/])
HBASE-17738 BucketCache startup is slow (Ram) (ramkrishna: rev 19154c8ea8ec80b95170274062ddcbdf18f80564)
* (edit) hbase-common/src/main/java/org/apache/hadoop/hbase/util/ByteBufferArray.java
* (edit) hbase-common/src/test/java/org/apache/hadoop/hbase/util/TestByteBufferArray.java


> 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, 2.0.0-alpha-2
>
>         Attachments: HBASE-17738_2.patch, HBASE-17738_2.patch, HBASE-17738_3.patch, HBASE-17738_4.patch,
HBASE-17738_5_withoutUnsafe.patch, HBASE-17738_6_withoutUnsafe.patch, HBASE-17738_8.patch,
HBASE-17738_9.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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