ben-zhang opened a new pull request, #38433:
URL: https://github.com/apache/spark/pull/38433
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### What changes were proposed in this pull request?
Make the `MSCK` keyword optional in `MSCK REPAIR TABLE` commands so that it
can be omitted.
### Why are the changes needed?
The use of the keyword `MSCK`, meaning metastore check, is arcane and does
not add value for the command. Removing it makes the meaning of `REPAIR TABLE`
commands more clear.
### Does this PR introduce _any_ user-facing change?
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Yes, previously, it was no possible to specify only `REPAIR TABLE` without
`MSCK`. Now, it is possible. No changes to existing behaviour using the
original `MSCK REPAIR TABLE` syntax are in this PR.
### How was this patch tested?
Unit tests.
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