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From "Alexander Kolbasov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-17751) Separate HMS Client and HMS server into separate sub-modules
Date Fri, 22 Jun 2018 01:08:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-17751?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16519889#comment-16519889
] 

Alexander Kolbasov commented on HIVE-17751:
-------------------------------------------

There is an interesting problem with HIVE-19418. Because of this Hive QL now depends on server
implementation since all the Txn part lives on the server side. I am wondering what is the
intend here and how it works now - or this {{TxnStore}} is really a client-side thing?

[~sershe] [~alangates] any comment?

> Separate HMS Client and HMS server into separate sub-modules
> ------------------------------------------------------------
>
>                 Key: HIVE-17751
>                 URL: https://issues.apache.org/jira/browse/HIVE-17751
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Standalone Metastore
>            Reporter: Vihang Karajgaonkar
>            Assignee: Alexander Kolbasov
>            Priority: Major
>         Attachments: HIVE-17751.01.patch, HIVE-17751.06-standalone-metastore.patch
>
>
> external applications which are interfacing with HMS should ideally only include HMSClient
library instead of one big library containing server as well. We should ideally have a thin
client library so that cross version support for external applications is easier. We should
sub-divide the standalone module into possibly 3 modules (one for common classes, one for
client classes and one for server) or 2 sub-modules (one for client and one for server) so
that we can generate separate jars for HMS client and server.



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