Details
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Sub-task
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Status: Closed
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Major
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Resolution: Fixed
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None
Description
- REPL DUMP takes 2 inputs along with existing FROM and WITH clause.
- REPL DUMP <current_repl_policy> [REPLACE <previous_repl_policy> FROM <last_repl_id> WITH <key_values_list>; - current_repl_policy and previous_repl_policy can be any format mentioned in Point-4. - REPLACE clause to be supported to take previous repl policy as input. If REPLACE clause is not there, then the policy remains unchanged. - Rest of the format remains same.
- Now, REPL DUMP on this DB will replicate the tables based on current_repl_policy.
- Single table replication of format <db_name>.t1 doesn’t allow changing the policy dynamically. So REPLACE clause is not allowed if previous_repl_policy of this format.
- If any table is added dynamically either due to change in regular expression or added to include list should be bootstrapped using independant table level replication policy.
- Hive will automatically figure out the list of tables newly included in the list by comparing the current_repl_policy & previous_repl_policy inputs and combine bootstrap dump for added tables as part of incremental dump. "_bootstrap" directory can be created in dump dir to accommodate all tables to be bootstrapped. - If any table is renamed, then it may gets dynamically added/removed for replication based on defined replication policy + include/exclude list. So, Hive will perform bootstrap for the table which is just included after rename.
- REPL LOAD should check for changes in repl policy and drop the tables/views excluded in the new policy compared to previous policy. It should be done before performing incremental and bootstrap load from the current dump.
- REPL LOAD on incremental dump should load events directories first and then check for "_bootstrap" directory and perform bootstrap load on them.
Rename table is not in scope of this jira.
Attachments
Attachments
Issue Links
- relates to
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HIVE-21893 Handle concurrent write + drop when ACID tables are getting bootstrapped.
- Open
- links to