Eugene Koifman created HIVE-19750:
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Summary: Initialize NEXT_WRITE_ID. NWI_NEXT on converting an
existing table to full acid
Key: HIVE-19750
URL: https://issues.apache.org/jira/browse/HIVE-19750
Project: Hive
Issue Type: Bug
Components: Transactions
Affects Versions: 3.0.0
Reporter: Eugene Koifman
Assignee: Eugene Koifman
Fix For: 3.1.0
Need to set this to a reasonably high value the the table.
This will reserve a range of write IDs that will be treated by the system as
committed.
This is needed so that we can assign unique ROW__IDs to each row in files that
already exist in the table. For example, if the value is initialized to the
number of files currently in the table, we can think of each file as written by
a separate transaction and thus a free to assign bucketProperty (BucketCodec)
of ROW_ID in whichever way is convenient.
it's guaranteed that all rows get unique ROW_IDs this way.
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