hadoop-hdfs-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Kihwal Lee (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-4090) getFileChecksum() result incompatible when called against zero-byte files.
Date Fri, 19 Oct 2012 21:30:13 GMT
Kihwal Lee created HDFS-4090:
--------------------------------

             Summary: getFileChecksum() result incompatible when called against zero-byte
files.
                 Key: HDFS-4090
                 URL: https://issues.apache.org/jira/browse/HDFS-4090
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: hdfs client
    Affects Versions: 2.0.2-alpha, 0.23.4
            Reporter: Kihwal Lee
            Priority: Critical


When getFileChecksum() is called against a zero-byte file, the branch-1 client returns MD5MD5CRC32FileChecksum
with crcPerBlock=0, bytePerCrc=0 and md5=70bc8f4b72a86921468bf8e8441dce51, whereas a null
is returned in trunk.

The null makes sense since there is no actual block checksums, but this breaks the compatibility
when doing distCp and calling getFileChecksum() via webhdfs or hftp.

This JIRA is to make the client to return the same 'magic' value that the branch-1 and earlier
clients return.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message