Curtis Allen created STORM-603:
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Summary: storm-kafka: Log errors when missing required
configuration fields
Key: STORM-603
URL: https://issues.apache.org/jira/browse/STORM-603
Project: Apache Storm
Issue Type: Bug
Reporter: Curtis Allen
Assignee: Curtis Allen
I was upgrading our topologies to storm-0.9.3 this
[commit|https://github.com/apache/storm/commit/2596e335f27a57784a93a57823bd93dde587909f]
introduced a change that threw me for a loop. When submitting my topology I
got the following error.
{code}
[main] ERROR storm.kafka.DynamicBrokersReader - Couldn't connect to zookeeper
java.lang.IllegalArgumentException: Don't know how to convert null to int
at backtype.storm.utils.Utils.getInt(Utils.java:301)
~[storm-core-0.9.3.jar:0.9.3]
at
storm.kafka.DynamicBrokersReader.<init>(DynamicBrokersReader.java:47)
~[gambit-storm-threads-0.0.1-SNAPSHOT-jar-with-dependencies.jar:na]
at
com.pearson.gambit.threads.storm.ThreadsTopology.main(ThreadsTopology.java:45)
[gambit-storm-threads-0.0.1-SNAPSHOT-jar-with-dependencies.jar:na]
Exception in thread "main" java.lang.RuntimeException:
java.lang.RuntimeException: java.lang.NullPointerException
at
storm.kafka.DynamicBrokersReader.getBrokerInfo(DynamicBrokersReader.java:81)
at
com.pearson.gambit.threads.storm.ThreadsTopology.main(ThreadsTopology.java:48)
Caused by: java.lang.RuntimeException: java.lang.NullPointerException
at
storm.kafka.DynamicBrokersReader.getNumPartitions(DynamicBrokersReader.java:94)
at
storm.kafka.DynamicBrokersReader.getBrokerInfo(DynamicBrokersReader.java:65)
... 1 more
Caused by: java.lang.NullPointerException
at
storm.kafka.DynamicBrokersReader.getNumPartitions(DynamicBrokersReader.java:91)
... 2 more
{code}
It took me a while to figure out that this error stems from missing the
{code}backtype.storm.Config.STORM_ZOOKEEPER_CONNECTION_TIMEOUT{code} property
in the conf map provided to the {code}storm.kafka.DynamicBrokersReader{code}
constructer. It would be nice to check the required configuration parameters
and throw a RuntimeException if any are missing.
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