Matt Burgess created NIFI-8016:
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Summary: Hive connection pool dynamic properties cannot be used
Key: NIFI-8016
URL: https://issues.apache.org/jira/browse/NIFI-8016
Project: Apache NiFi
Issue Type: Bug
Components: Extensions
Reporter: Matt Burgess
There is code in all versions of HiveConnectionPool to retrieve all dynamic
(aka user-defined) properties and set them as key/value pairs on the Hive
configuration. However there are two issues with this:
1) There is no getSupportedDynamicPropertyDescriptor() method defined, so
adding a dynamic property to the controller service renders it invalid. There
should be unit test(s) that exercise this, but there are not.
2) This behavior is inconsistent with DBCPConnectionPool, which uses dynamic
properties to set properties on the DataSource that aren't available as
explicit properties on the controller service (see
https://commons.apache.org/proper/commons-dbcp/configuration.html for the list
of available properties)
It seems more useful and consistent to have the dynamic properties act the same
way as they do in DBCPConnectionPool. Adding properties to the Hive config can
be done in the config file itself, or pointing at an additional configuration
file containing the desired Hive properties. Since this feature can't currently
be used anyway, we can change the behavior without user impact.
This should include adding documentation to the controller service explaining
what the dynamic properties do.
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