Tommy Becker created KAFKA-1909:
-----------------------------------
Summary: VerifiableProperties does not "see" default properties of
the wrapped Properties instance
Key: KAFKA-1909
URL: https://issues.apache.org/jira/browse/KAFKA-1909
Project: Kafka
Issue Type: Bug
Components: config
Affects Versions: 0.8.1.1
Reporter: Tommy Becker
The VerifiableProperties class wraps a java.util.Properties instance. The
various getXXX methods in VerifiableProperties that do not take a default value
issue a containsKey() call to the underlying Properties instance to determine
if the property exists. Unfortunately, the containsKey method is merely
(mis)-inherited from Hashtable; it doesn't query the Properties instance own
defaults. The net effect of this is that only key value pairs defined directly
in the Properties instance are usable by Kafka. We have a base config that is
used throughout our application but one particular consumer needs different
settings. Trying to achieve this by using new Properties(baseProperties) and
setting the consumer specific values in that doesn't work :(
VerifiableProperties already provides its own containsKey method that should
simply be changed to return getProperty(<propname>) != null to avoid this issue.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
