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hive.exim.uri.scheme.whitelist

• Default

  Value:

  hdfs,pfile

  prior

  to

  Hive

  2.2.0;

  hdfs,pfile,file

  in

  Hive

  2.2.0

  and

  later

• Added In: Hive 0.8.0 with HIVE-1918; default changed in Hive 2.2.0 with HIVE-15151

A comma separated list of acceptable URI schemes for import and export.

...

• Default Value: /usr/hive/repl/
• Added in: Hive 2.2.00 with HIVE-15151

This is a hdfs an HDFS root directory under which hiveHive's REPL DUMP command will operate, creating dumps to replicate along to other warehouses. 

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