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https://issues.apache.org/jira/browse/HIVE-20398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16591001#comment-16591001
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wuchang commented on HIVE-20398:
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[~alangates] , [~thejas] @ would you please give me some suggestions?
> [Hive Metastore] Add a Configuration Item for Metastore Server to Skip the
> HDFS Data Modification
> -------------------------------------------------------------------------------------------------
>
> Key: HIVE-20398
> URL: https://issues.apache.org/jira/browse/HIVE-20398
> Project: Hive
> Issue Type: Task
> Components: Metastore
> Affects Versions: 2.3.2
> Reporter: wuchang
> Assignee: wuchang
> Priority: Major
>
> When we are conducting the hive upgrading, we have following use case:
> We want to sync the operations between two metastore server (A and B) by
> thrift api, but both them are based on the same HDFS. So, for operations like
> *drop_partitions*, *drop_table*, *insert_overwrite, create_table* which will
> cause the data modification in HDFS, these HDFS data modification will be
> executed twice, which is not what we want, instead, we want it to be
> executed by only Metastore Server A. For metastore Server B, It should be
> configured to only change his metadata, but skipping the HDFS data
> modification.
> So, we need a switch to control this.
> like
> {code:java}
> hive.metastore.skip.hdfs=false{code}
> whose default value is *false.* When its value is *true*, the metastore
> server will only conduct the metadata modification, but skip the HDFS data
> modification.
>
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