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https://issues.apache.org/jira/browse/HIVE-21286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16778803#comment-16778803
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Sankar Hariappan commented on HIVE-21286:
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[~maheshk114], Can you please review?
> Hive should support clean-up of previously bootstrapped tables when retry
> from different dump.
> ----------------------------------------------------------------------------------------------
>
> Key: HIVE-21286
> URL: https://issues.apache.org/jira/browse/HIVE-21286
> Project: Hive
> Issue Type: Bug
> Components: repl
> Affects Versions: 4.0.0
> Reporter: Sankar Hariappan
> Assignee: Sankar Hariappan
> Priority: Major
> Labels: DR, Replication, pull-request-available
> Attachments: HIVE-21286.01.patch
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> If external tables are enabled for replication on an existing repl policy,
> then bootstrapping of external tables are combined with incremental dump.
> If incremental bootstrap load fails with non-retryable error for which user
> will have to manually drop all the external tables before trying with another
> bootstrap dump. For full bootstrap, to retry with different dump, we
> suggested user to drop the DB but in this case they need to manually drop all
> the external tables which is not so user friendly. So, need to handle it in
> Hive side as follows.
> REPL LOAD takes additional config (passed by user in WITH clause) that says,
> drop all the tables which are bootstrapped from previous dump.
> hive.repl.rollback.bootstrap.load=<previous_bootstrap_dump_dir>
> Hive will use this config only if the current dump is bootstrap dump or
> combined bootstrap in incremental dump.
> Caution to be taken by user that this config should not be passed if previous
> REPL LOAD (with bootstrap) was successful or any successful incremental
> dump+load happened after "previous_bootstrap_dump_dir".
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