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https://issues.apache.org/jira/browse/HDFS-6502?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Akira AJISAKA updated HDFS-6502:
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Attachment: HDFS-6502.patch
Thanks [~yzhangal] for the report. Attaching a patch for trunk and branch-2.
> incorrect description in distcp2 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
> Assignee: Akira AJISAKA
> Attachments: HDFS-6502.patch
>
>
> 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, making the following modification would be more
> accurate:
> 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.
> {code}
> The "Command Line Options" table:
> {code}
> -overwrite: Overwrite destination
> -update: Overwrite destination if source and destination have different
> contents
> {code}
> Thanks.
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