Sushanth Sowmyan created HIVE-10892:
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             Summary: TestHCatClient should not accept external metastore param 
from -Dhive.metastore.uris
                 Key: HIVE-10892
                 URL: https://issues.apache.org/jira/browse/HIVE-10892
             Project: Hive
          Issue Type: Bug
            Reporter: Sushanth Sowmyan
            Assignee: Sushanth Sowmyan


HIVE-10074 added the ability to specify a -Dhive.metastore.uris from the 
commandline, so as to run the test against a deployed metastore.

However, because of the way HiveConf is written, this results in that parameter 
always overriding any value specified in the conf passed into it for 
instantiation, since it accepts System Var Overrides. This results in some 
tests, notably those that attempt to connect between two metastores (such as 
TestHCatClient#testPartitionRegistrationWithCustomSchema to fail.

Fixing this in HiveConf is not a good idea, since that behaviour is desired for 
HiveConf. Fixing this in HCatUtil.getHiveConf doesn't really work either, since 
that is a utility wrapper on HiveConf, and is supposed to behave similarly. 
Thus, the fix for this then becomes something to use in all our testcases, 
where we instantiate Configuration objects. It seems more appropriate to change 
the parameter we use to specify test parameters then, than to change each 
config object.

Thus, we should change semantics for running this test against an external 
metastore by specifying the override in a different parameter name, say 
test.hive.metastore.uris, instead of hive.metastore.uris, which has a specific 
meaning.



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