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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8420) Port HBASE-6874 Implement prefetching for scanners from 0.89-fb
Date Wed, 08 May 2013 18:45:17 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13652211#comment-13652211
] 

Jean-Daniel Cryans commented on HBASE-8420:
-------------------------------------------

[~ndimiduk], you could be in a situation where in/out traffic is ok but the memory used by
pre-fetching is exploding, so yes you want some form of rate limiting and for this case it
has to be at the pre-fetchers level.
                
> Port  HBASE-6874  Implement prefetching for scanners from 0.89-fb
> -----------------------------------------------------------------
>
>                 Key: HBASE-8420
>                 URL: https://issues.apache.org/jira/browse/HBASE-8420
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>         Attachments: 0.94-8420_v1.patch, 0.94-8420_v2.patch, trunk-8420_v1.patch, trunk-8420_v2.patch
>
>
> This should help scanner performance.  We should have it in trunk.

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