Sankar Hariappan created HIVE-17196:
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Summary: CM: ReplCopyTask should retain the original file names
even if copied from CM path.
Key: HIVE-17196
URL: https://issues.apache.org/jira/browse/HIVE-17196
Project: Hive
Issue Type: Sub-task
Components: repl
Affects Versions: 2.1.0
Reporter: Sankar Hariappan
Assignee: Sankar Hariappan
Fix For: 3.0.0
Consider the below scenario,
1. Insert into table T1 with value(X).
2. Insert into table T1 with value(X).
3. Truncate the table T1.
– This step backs up 2 files with same content to cmroot which ends up with one
file in cmroot as checksum matches.
4. Incremental repl with above 3 operations.
– In this step, both the insert event files will be read from cmroot where copy
of one leads to overwrite the other one as the file name is same in cm path
(checksum as file name).
So, this leads to data loss and hence it is necessary to retain the original
file names even if we copy from cm path.
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