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From "Kihwal Lee (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-3177) Allow DFSClient to find out and use the CRC type being used for a file.
Date Mon, 02 Apr 2012 16:45:24 GMT
Allow DFSClient to find out and use the CRC type being used for a file.
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                 Key: HDFS-3177
                 URL: https://issues.apache.org/jira/browse/HDFS-3177
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: data-node, hdfs client
    Affects Versions: 0.23.0
            Reporter: Kihwal Lee
            Assignee: Kihwal Lee
             Fix For: 0.23.3, 2.0.0, 3.0.0


To support HADOOP-8060, DFSClient should be able to find out the checksum type being used
for files in hdfs.
In my prototype, DataTransferProtocol was extended to include the checksum type in the blockChecksum()
response. DFSClient uses it in getFileChecksum() to determin the checksum type. Also append()
can be configured to use the existing checksum type instead of the configured one.

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