Status: Patch Available
Affects Version/s: None
Fix Version/s: None
HDFS-9820 proposed adding -rdiff switch to distcp, as a reversed operation of -diff switch.
Upon discussion with Jing Zhao, we will introduce a new tool that wraps around distcp to achieve the same purpose.
I'm thinking about calling the new tool "rsync", similar to unix/linux command "rsync". The "r" here means remote.
The syntax that simulate -rdiff behavior proposed in
This command ensure <fromSnapshotName> is newer than <toSnapshotName>.
I think, In the future, we can add another command to have the functionality of -diff switch of distcp.
that ensures <fromSnapshotName> is older than <toSnapshotName>.
Thanks Jing Zhao.