W1thOut opened a new pull request #4203:
URL: https://github.com/apache/carbondata/pull/4203
### Why is this PR needed?
In some scenarios, need to delete old segments in batches and keep only
latest few segments.
### What changes were proposed in this PR?
Add a DML.
### Does this PR introduce any user interface change?
- No
### Is any new testcase added?
- Yes
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