[SPARK-19329][SQL][BRANCH-2.1]Reading from or writing to a datasource table with a non pre-existing location should succeed#17317

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windpiger wants to merge 2 commits intoapache:branch-2.1from

windpiger:backport-insertnotexists

Commits on Mar 16, 2017

[SPARK-19329][SQL][BACKPORT-2.1]backport to branch-2.1,Reading from or writing to a datasource table with a non pre-existing location should succeed
windpiger
committed
fix some code
windpiger
committed