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This patch enables running Impala tests against Isilon as the default file system. The
intention is to run tests against a realistic deployment, i.e, Isilon replacing HDFS as
the underlying filesystem.
Specifically, it does the following:
- Adds a new environment variable DEFAULT_FS, which points to HDFS by default.
- Makes the fs.defaultFs property in core-site.xml use the DEFAULT_FS environment
variable, such that all clients talk to Isilon implicitly.
- Unset FILESYSTEM_PREFIX when the TARGET_FILESYSTEM is Isilon, since path prefixes
are no longer needed.
- Only starts the Hive Metastore and the Impala service stack when running
tests against Isilon.
We don't start KMS/HBase because they're not relevant to Isilon. We also don't
start YARN, Hive and LLama because hive queries are disabled with Isilon.
The scripts that start/stop Hive, YARN and Llama should be modified to point to a
filesystem other than HDFS in the future.
Change-Id: Id66bfb160fe57f66a64a089b465b536c6c514b63
Reviewed-on: http://gerrit.cloudera.org:8080/449
Reviewed-by: Ishaan Joshi <ishaan@cloudera.com>
Tested-by: Internal Jenkins