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From "Yongjun Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-6502) a typo in distcp document
Date Sun, 08 Jun 2014 06:54:01 GMT
Yongjun Zhang created HDFS-6502:
-----------------------------------

             Summary: a typo in distcp document
                 Key: HDFS-6502
                 URL: https://issues.apache.org/jira/browse/HDFS-6502
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: documentation
    Affects Versions: 2.4.0
            Reporter: Yongjun Zhang


In http://hadoop.apache.org/docs/r1.2.1/distcp2.html#UpdateAndOverwrite

The first statement of the "Update and Overwrite" section says:
{quote}
-update is used to copy files from source that don't exist at the target, or have different
contents. -overwrite overwrites target-files even if they exist at the source, or have the
same contents.
{quote}

The "Command Line Options" table says :
{quote}
  -overwrite: Overwrite destination
  -update: Overwrite if src size different from dst size
{quote}

Based on the implementation, they need to modified to:

The first statement of the "Update and Overwrite" section:
{code}
-update is used to copy files from source that don't exist at the target, or have different
contents. -overwrite overwrites target-files if they exist at the target, and even if they
have the same contents as the source-files.
{code}

The "Command Line Options" table:
{code}
  -overwrite: Overwrite destination
  -update: Overwrite if src and dst have different contents
{code}

Thanks.




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