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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12295) Prevent block eviction under us if reads are in progress from the BBs
Date Thu, 23 Jul 2015 12:08:04 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14638713#comment-14638713
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Hudson commented on HBASE-12295:
--------------------------------

FAILURE: Integrated in HBase-TRUNK #6675 (See [https://builds.apache.org/job/HBase-TRUNK/6675/])
HBASE-12295 - Addendum for multiGets to add the call back(Ram) (ramkrishna: rev 4ec69ccf3ae8701727299179ac6b5002bbd72c55)
* hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RSRpcServices.java


> 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_10.patch,
HBASE-12295_12.patch, HBASE-12295_14.patch, HBASE-12295_15.patch, HBASE-12295_16.patch, HBASE-12295_16.patch,
HBASE-12295_17.patch, HBASE-12295_18.patch, HBASE-12295_2.patch, HBASE-12295_21.patch, HBASE-12295_4.patch,
HBASE-12295_4.pdf, HBASE-12295_5.pdf, HBASE-12295_9.patch, HBASE-12295_addendum.patch, HBASE-12295_final.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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