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https://issues.apache.org/jira/browse/HADOOP-12558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16688613#comment-16688613
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Arpit Agarwal commented on HADOOP-12558:
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Thanks [~dineshchitlangia]. It looks like the xtrack option is tagged as
unstable. Perhaps we should mention it is experimental, and also that it cannot
be used with ATOMIC_COMMIT.
{code}
/**
* Track missing files in target that are missing from source
* This allows for other applications to complete the synchronization,
* possibly with object-store-specific delete algorithms.
* Typically used in conjunction with SYNC_FOLDERS
* Incompatible with ATOMIC_COMMIT
*/
@InterfaceStability.Unstable
TRACK_MISSING(DistCpConstants.CONF_LABEL_TRACK_MISSING,
new Option("xtrack", true,
"Save information about missing source files to the"
+ " specified directory")),
{code}
> distcp documentation is woefully out of date
> --------------------------------------------
>
> Key: HADOOP-12558
> URL: https://issues.apache.org/jira/browse/HADOOP-12558
> Project: Hadoop Common
> Issue Type: Improvement
> Components: documentation, tools/distcp
> Reporter: Allen Wittenauer
> Assignee: Dinesh Chitlangia
> Priority: Critical
> Labels: newbie
> Attachments: HADOOP-12558.001.patch, HADOOP-12558.002.patch
>
>
> There are a ton of distcp tune-ables that have zero documentation outside of
> the source code. This should be fixed.
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