Eugene Koifman created HIVE-19961:
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Summary: Add partition if exists on transactional CRUD table
acquires X lock
Key: HIVE-19961
URL: https://issues.apache.org/jira/browse/HIVE-19961
Project: Hive
Issue Type: Bug
Components: Transactions
Affects Versions: 3.0.0
Reporter: Eugene Koifman
Assignee: Eugene Koifman
This is necessary for correctness since each add partition consists of 2 parts
# Add Partition metadata object to metastore
# Create a delta dir and copy data there.
This means it's neither Atomic not Isolated. Isolation is fixed by using X
lock (which is currently on the table. todo: see if it can be made on the
partition being created - this may block table level locks...)
Atomicity would have to be addressed by adding a write ID to Partition to that
it's not visible until Hive transaction has committed.
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