Misconfiguration leads to NullPointerException in code
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Key: CHUKWA-465
URL: https://issues.apache.org/jira/browse/CHUKWA-465
Project: Hadoop Chukwa
Issue Type: Bug
Components: Data Processors
Affects Versions: 0.4.0
Environment: OS:
Fedora 12
Linux skinner.mustardgrain.com 2.6.32.9-70.fc12.x86_64 #1 SMP Wed Mar 3
04:40:41 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux
Java:
java version "1.6.0_18"
Java(TM) SE Runtime Environment (build 1.6.0_18-b07)
Java HotSpot(TM) 64-Bit Server VM (build 16.0-b13, mixed mode)
Reporter: Kirk True
Priority: Minor
I didn't know to copy chukwa-demux-conf.xml.template to chukwa-demux-conf.xml
and got this error in postprocess.log:
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2010-03-16 16:46:18,150 INFO main PostProcessorManager - PostProcess Start,
directory:/chukwa/postProcess/demuxOutputDir_1268783176828
2010-03-16 16:46:18,151 ERROR main PostProcessorManager -
java.lang.NullPointerException
at
org.apache.hadoop.chukwa.extraction.demux.PostProcessorManager.processDemuxPigOutput(PostProcessorManager.java:173)
at
org.apache.hadoop.chukwa.extraction.demux.PostProcessorManager.start(PostProcessorManager.java:145)
at
org.apache.hadoop.chukwa.extraction.demux.PostProcessorManager.main(PostProcessorManager.java:80)
2010-03-16 16:46:18,151 WARN main PostProcessorManager - Error in
processDemuxOutput for :/chukwa/postProcess/demuxOutputDir_1268783176828
2010-03-16 16:46:18,175 WARN main PostProcessorManager - Error in postProcess
:/chukwa/postProcess/demuxOutputDir_1268783176828 has been moved
to:/chukwa/postProcessInError//demuxOutputDir_1268783176828_1268783178154
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The problem is here:
String[] classes = conf.get(POST_DEMUX_DATA_LOADER).split(",");
In my case (again, due to bad configuration) that configuration file is missing
and so we end up trying to split through a null reference.
*Note*: I got this code from trunk, revision 924074.
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