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From "LiuLei (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-6798) HDFS always read checksum form meta file
Date Mon, 17 Sep 2012 02:41:07 GMT
LiuLei created HBASE-6798:

             Summary: 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: 0.94.1, 0.94.0
            Reporter: LiuLei

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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