Zoltán Borók-Nagy created IMPALA-12857:
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Summary: Add flag to enable merge-on-read even if tables are
configured with copy-on-write
Key: IMPALA-12857
URL: https://issues.apache.org/jira/browse/IMPALA-12857
Project: IMPALA
Issue Type: Bug
Components: Frontend
Reporter: Zoltán Borók-Nagy
Impala can only modify a table via 'merge-on-read'. It raises an error if users
want to modify a table that is configured with 'copy-on-write'.
We could add a backend flag to relax this restriction, i.e. enable
'merge-on-read' operations (DELETE, UPDATE, MERGE) even if the table property
is 'copy-on-write'.
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