Andrew Wong created KUDU-3166:
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Summary: Tool to adjust the size of a tablet replica's data
directory group
Key: KUDU-3166
URL: https://issues.apache.org/jira/browse/KUDU-3166
Project: Kudu
Issue Type: New Feature
Components: fs, tablet
Affects Versions: 1.12.0
Reporter: Andrew Wong
Today, if a user wanted to allow a tablet to use newly added data directories,
there are a few ways to achieve this:
* Drop the tablet and rewrite it.
* Copy the replica elsewhere. The copy will have a new set of data directories.
* Wait for the existing data directories in the group to run out of space –
once this happens, a new directory will be added to the group.
None of these are pleasant – we should add a tool to expand the data directory
group for a remote replica, maybe even allowing users to specify a target
directory path.
For completeness sake, it would also be nice if the tool could reduce data
directory group size, but that seems less obviously useful.
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