Support multiple file systems
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Key: HIVE-2318
URL: https://issues.apache.org/jira/browse/HIVE-2318
Project: Hive
Issue Type: New Feature
Reporter: Vaibhav Aggarwal
Assignee: Vaibhav Aggarwal
Currently some of the Hive tasks like MoveTask, ConditionalMergeResolver assume
that the data is being copied or moved on the same file system.
These operators file if the source table is in one filesystem (like HDFS) and
destination table is in another file system (like s3).
This patch aims at:
1. Support moving data between different file systems.
2. Add support for file systems which do not support 'move' operation like s3.
3. Remove redundant operations like moving data from and to the same location.
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