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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12295) Prevent block eviction under us if reads are in progress from the BBs
Date Fri, 05 Jun 2015 12:55:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14574445#comment-14574445
] 

ramkrishna.s.vasudevan commented on HBASE-12295:
------------------------------------------------

Ping for reviews!!!.

> Prevent block eviction under us if reads are in progress from the BBs
> ---------------------------------------------------------------------
>
>                 Key: HBASE-12295
>                 URL: https://issues.apache.org/jira/browse/HBASE-12295
>             Project: HBase
>          Issue Type: Sub-task
>          Components: regionserver, Scanners
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 2.0.0
>
>         Attachments: HBASE-12295.pdf, HBASE-12295_1.patch, HBASE-12295_1.pdf, HBASE-12295_2.patch,
HBASE-12295_trunk.patch
>
>
> While we try to serve the reads from the BBs directly from the block cache, we need to
ensure that the blocks does not get evicted under us while reading.  This JIRA is to discuss
and implement a strategy for the same.



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