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https://issues.apache.org/jira/browse/HBASE-8322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13668764#comment-13668764
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Jean-Daniel Cryans commented on HBASE-8322:
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bq. The thing is that we want checksums for everything other than reading hfile
blocks.
Ah ok, that makes sense. But what about if the user really wants to set it to
true? Live with the WARN message?
bq. Was there performance comparison between HBase checksum for HFiles vs.
hadoop checksum through native CRC ?
http://apache-hbase.679495.n3.nabble.com/Unscientific-comparison-of-fully-cached-zipfian-reading-td4042911.html
4th VS 7th column.
> Re-enable hbase checksums by default
> ------------------------------------
>
> Key: HBASE-8322
> URL: https://issues.apache.org/jira/browse/HBASE-8322
> Project: HBase
> Issue Type: Improvement
> Components: Filesystem Integration
> Reporter: Enis Soztutar
> Assignee: Enis Soztutar
> Fix For: 0.98.0, 0.95.1
>
> Attachments: hbase-8322_v1.patch
>
>
> Double checksumming issues in HBase level checksums(HBASE-5074) has been
> fixed in HBASE-6868. However, that patch also disables hbase checksums by
> default. I think we should re-enable it by default, and document the
> interaction with shortcircuit reads.
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