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

["Robert Joseph Evans (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/STORM-967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Joseph Evans reassigned STORM-967:
-----------------------------------------

    Assignee: Robert Joseph Evans  (was: Priyank Shah)

> 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
>          Components: storm-hdfs, storm-kafka
>            Reporter: Sriharsha Chintalapani
>            Assignee: Robert Joseph Evans
>            Priority: Critical
>             Fix For: 0.10.0, 0.11.0
>
>
> 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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