Review Request: Review request: HIVE-4566 NullPointerException if typeinfo and nativesql commands are executed at beeline before a DB connection is established

[Xuefu Zhang]

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https://reviews.apache.org/r/11599/
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Review request for hive and Ashutosh Chauhan.


Description
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Patch with new test cases.


Diffs
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Diff: https://reviews.apache.org/r/11599/diff/


Testing
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All unit test cases passed.


Thanks,

Xuefu Zhang