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https://issues.apache.org/jira/browse/HBASE-18641?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16135394#comment-16135394
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Anoop Sam John commented on HBASE-18641:
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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_2jhfvo...@mail.gmail.com%3e]
> for details.
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