wuchang created HIVE-20398:
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Summary: [Hive Metastore] Add a Configuration Item 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
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, we want it to be executed by only
Metastore Server A. For metastore Server B, he will only change his metadata,
but didn't do corresponding HDFS files operation.
So, we need a switch to control this.
like
{code:java}
hive.metastore.skip.hdfs{code}
whose default value is *false* just like what is happening now.
When its value is true, the metastore server will only conduct the metadata
modification, but skip the HDFS data modification.
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