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https://issues.apache.org/jira/browse/HBASE-6798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13457739#comment-13457739
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Anoop Sam John commented on HBASE-6798:
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@LiuLei
Yes I am aware of this..
What I am asking is that hbase handled checksum check can not be done in non
local shortcircuit based reads? I doubt when the feature is developed whether
this was the intent.. Atleast no such reference in code or book
Pls correct me if I have missed some thing.
> 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
>
> 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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