[Impala-CR](cdh5-trunk) IMPALA-3532: S3: test_truncate_cleans_hdfs_files fails because we skip INSERT staging

["Sailesh Mukil (Code Review)" <ge...@cloudera.org>]

Sailesh Mukil has uploaded a new change for review.

  http://gerrit.cloudera.org:8080/3049

Change subject: IMPALA-3532: S3: test_truncate_cleans_hdfs_files fails because we skip INSERT staging
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IMPALA-3532: S3: test_truncate_cleans_hdfs_files fails because we skip INSERT staging

On the introduction of IMPALA-3452, we defaulted to skipping the
INSERT staging for S3. test_truncate_cleans_hdfs_files assumes that
it will always see the _impala_insert_staging folder but we will not
see that on S3 runs.

This patch deletes the staging folder if it exists and continues the
test without taking into account the staging folder.

Change-Id: I3580f03690e29fe99f441b26bc9baa4c0964d79c
---
M tests/metadata/test_ddl.py
1 file changed, 5 insertions(+), 2 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala refs/changes/49/3049/1
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I3580f03690e29fe99f441b26bc9baa4c0964d79c
Gerrit-PatchSet: 1
Gerrit-Project: Impala
Gerrit-Branch: cdh5-trunk
Gerrit-Owner: Sailesh Mukil <sa...@cloudera.com>