Github user gatorsmile commented on the pull request:
https://github.com/apache/spark/pull/12801#issuecomment-218589737
**Update:**
- Reverted the code changes.
1. Users are allowed to specify the partial partition spec. For
example, given a table with four partitions [a='1', b='x'], [a='2', b='x'],
[a='1', b='y'], [a='2', b='y'], users can drop partitions by [a='1'] or [b='x]
2. Users are also allowed to specify multiple partition specs in the
same command.
- Re-implemented the `dropPartitions` in `HiveClientImpl`. Now, we always
check if all the user-specified partition specs exist before attempting to drop
the partitions. Previously, we start drop the partition before completing
checking the existence of all the partition specs.
- If any failure happened after we start to drop the partitions, we will
log an error message to indicate which partitions have been dropped and which
partitions have not been dropped.
- Updated the checking logics of partition spec.
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