[Impala-CR](cdh5-trunk) Use unique_database fixture in test_col_stats.py.

["Alex Behm (Code Review)" <ge...@cloudera.org>]

Alex Behm has uploaded a new change for review.

  http://gerrit.cloudera.org:8080/2963

Change subject: Use unique_database fixture in test_col_stats.py.
......................................................................

Use unique_database fixture in test_col_stats.py.

The patch also addresses a TODO asking for
test_col_stats.py to be merged into test_compute_stats.py

Testing: I ran the test by itself in a loop 10 times,
and the whole test_compute_stats.py locally. Also did
a private core/hdfs run.

Change-Id: I88aa77464a95993c018e19a52eeb496d7c3eef08
---
D tests/metadata/test_col_stats.py
M tests/metadata/test_compute_stats.py
2 files changed, 40 insertions(+), 91 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala refs/changes/63/2963/1
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I88aa77464a95993c018e19a52eeb496d7c3eef08
Gerrit-PatchSet: 1
Gerrit-Project: Impala
Gerrit-Branch: cdh5-trunk
Gerrit-Owner: Alex Behm <al...@cloudera.com>