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https://issues.apache.org/jira/browse/HIVE-2318?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13079694#comment-13079694
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John Sichi commented on HIVE-2318:
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Besides mock-based unit tests, it would also be useful to have a way to
configure test runs against a real S3 filesystem. (By default that
configuration would be disabled for running Hive unit tests.) That way, if we
want to say that a particular Hive release has working S3 support, we would
make that one of the release criteria and perform the system testing on release
candidates.
> Support multiple file systems
> -----------------------------
>
> Key: HIVE-2318
> URL: https://issues.apache.org/jira/browse/HIVE-2318
> Project: Hive
> Issue Type: New Feature
> Reporter: Vaibhav Aggarwal
> Assignee: Vaibhav Aggarwal
> Attachments: HIVE-2318.patch
>
>
> 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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