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https://issues.apache.org/jira/browse/HBASE-6798?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HBASE-6798:
-------------------------
Attachment: 6798.txt
Here is doc. I've added to the refguide explaining the current state of things.
> HDFS always read checksum form meta file
> ----------------------------------------
>
> Key: HBASE-6798
> URL: https://issues.apache.org/jira/browse/HBASE-6798
> Project: HBase
> Issue Type: Bug
> Components: performance
> Affects Versions: 0.94.0, 0.94.1
> Reporter: LiuLei
> Priority: Blocker
> Attachments: 6798.txt
>
>
> I use hbase0.941 and hadoop-0.20.2-cdh3u5 version.
> The HBase support checksums in HBase block cache in HBASE-5074 jira.
> The HBase support checksums for decrease the iops of HDFS, so that HDFS
> dont't need to read the checksum from meta file of block file.
> But in hadoop-0.20.2-cdh3u5 version, BlockSender still read the metadata file
> even if the
> hbase.regionserver.checksum.verify property is ture.
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