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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18641) Include block content verification logic used in lruCache in bucketCache
Date Mon, 21 Aug 2017 16:27:01 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18641?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16135394#comment-16135394
] 

Anoop Sam John commented on HBASE-18641:
----------------------------------------

This is while caching and already the block is in cache but with diff content. Not really
possible may be.  It might be ok to add this verification.

> Include block content verification logic used in lruCache in bucketCache
> ------------------------------------------------------------------------
>
>                 Key: HBASE-18641
>                 URL: https://issues.apache.org/jira/browse/HBASE-18641
>             Project: HBase
>          Issue Type: Bug
>          Components: regionserver
>            Reporter: Biju Nair
>
> With off-heap/bucketCache being used to cache data blocks without going through on-heap
cache, the logic used in lruCache to check the content of already cached block need to be
included in bucketCache. Please see this [discussion|https://mail-archives.apache.org/mod_mbox/hbase-dev/201708.mbox/%3cCAO40JLCnXLw3=0bbUaXdDx=w2fkLLJefVgJ6-UVJ_2JhfvOz+Q@mail.gmail.com%3e]
for details. 



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