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From "Sankar Hariappan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-19739) Bootstrap REPL LOAD to use checkpoints to validate and skip the loaded data/metadata.
Date Wed, 06 Jun 2018 08:43:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-19739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16502999#comment-16502999
] 

Sankar Hariappan commented on HIVE-19739:
-----------------------------------------

[~maheshk114],

Could you please review it?

> Bootstrap REPL LOAD to use checkpoints to validate and skip the loaded data/metadata.
> -------------------------------------------------------------------------------------
>
>                 Key: HIVE-19739
>                 URL: https://issues.apache.org/jira/browse/HIVE-19739
>             Project: Hive
>          Issue Type: Sub-task
>          Components: HiveServer2, repl
>    Affects Versions: 3.0.0
>            Reporter: Sankar Hariappan
>            Assignee: Sankar Hariappan
>            Priority: Major
>              Labels: DR, pull-request-available, replication
>             Fix For: 4.0.0
>
>         Attachments: HIVE-19739.01.patch
>
>
> Currently. bootstrap REPL LOAD have added checkpoint identifiers in DB/table/partition
object properties once the data/metadata related to the object is successfully loaded.
> If the Db exist and is not empty, then currently we are throwing exception. But need
to support it for the retry scenario after a failure.
> If there is a retry of bootstrap load using the same dump, then instead of throwing error,
we should check if any of the tables/partitions are completely loaded using the checkpoint
identifiers. If yes, then skip it or else drop/create them again.
> If the bootstrap load is performed using different dump, then it should throw exception.



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