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mahesh kumar behera updated HIVE-21764: --------------------------------------- Attachment: HIVE-21764.02.patch > REPL DUMP should detect and bootstrap any rename table events where old table > was excluded but renamed table is included. > ------------------------------------------------------------------------------------------------------------------------- > > Key: HIVE-21764 > URL: https://issues.apache.org/jira/browse/HIVE-21764 > Project: Hive > Issue Type: Sub-task > Components: repl > Reporter: Sankar Hariappan > Assignee: mahesh kumar behera > Priority: Major > Labels: DR, Replication, pull-request-available > Attachments: HIVE-21764.01.patch, HIVE-21764.02.patch > > Time Spent: 3h 20m > Remaining Estimate: 0h > > REPL DUMP fetches the events from NOTIFICATION_LOG table based on regular > expression + inclusion/exclusion list. So, in case of rename table event, the > event will be ignored if old table doesn't match the pattern but the new > table should be bootstrapped. REPL DUMP should have a mechanism to detect > such tables and automatically bootstrap with incremental replication.Also, if > renamed table is excluded from replication policy, then need to drop the old > table at target as well. > There are 4 scenarios that needs to be handled. > # Both new name and old name satisfies the table name pattern filter. > ## No need to do anything. The incremental event for rename should take care > of the replication. > # Both the names does not satisfy the table name pattern filter. > ## Both the names are not in the scope of the policy and thus nothing needs > to be done. > # New name satisfies the pattern but the old name does not. > ## The table will not be present at the target. > ## Rename event handler for dump should detect this case and add the new > table name to the list of table for bootstrap. > ## All the events related to the table (new name) should be ignored. > ## If there is a drop event for the table (with new name), then remove the > table from the list of tables to be bootstrapped. > ## In case of rename (double rename) > ### If the new name satisfies the table pattern, then add the new name to > the list of tables to be bootstrapped and remove the old name from the list > of tables to be bootstrapped. > ### If the new name does not satisfies then just removed the table name from > the list of tables to be bootstrapped. > # New name does not satisfies the pattern but the old name satisfies. > ## Change the rename event to a drop event. -- This message was sent by Atlassian JIRA (v7.6.3#76005)