[jira] [Created] (STORM-967) Unable to package storm-kafka & storm-hdfs connectors in a topology

["Sriharsha Chintalapani (JIRA)" <ji...@apache.org>]

Sriharsha Chintalapani created STORM-967:
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             Summary: Unable to package storm-kafka & storm-hdfs connectors in a topology
                 Key: STORM-967
                 URL: https://issues.apache.org/jira/browse/STORM-967
             Project: Apache Storm
          Issue Type: Bug
            Reporter: Sriharsha Chintalapani
            Priority: Critical


Based on my testing storm-kafka & storm-hdfs connector along with it dependencies are unable to be packaged together .

If we tried to package it using maven assembly plugin storm-hdfs errors out saying
"java.lang.RuntimeException: Error preparing HdfsBolt: No FileSystem for scheme: hdfs"

To avoid we need to use maven shade plugin as documented in the README here
https://github.com/apache/storm/tree/master/external/storm-hdfs

Now when we use maven shade plugin storm-kafka throws an initial error about
{code}
   java.lang.NoClassDefFoundError: Could not initialize class com.yammer.metrics.Metrics
at kafka.metrics.KafkaMetricsGroup$class.newTimer(KafkaMetricsGroup.scala:52) at kafka.consumer.FetchRequestAndResponseMetrics.newTimer(FetchRequestAndResponseStats.scala:25)
at kafka.consumer.FetchRequestAndResponseMetrics.<init>(FetchRequestAndResponseStats.scala:26)
at kafka.consumer.FetchRequestAndResponseStats.<init>(FetchRequestAndResponseStats.scala:37)
{code}
After we explicitly added metrics dependency to the pom file 
KafkaSpout now errors out with 
IllegalStateException KafkaMetricsGroup.newTimer  

KafkaSpout works fine if we use assembly plugin.  Due to the behavior of these two connectors one works assembly and another works with shade it looks like we won't be able to use them together.




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