Details
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Bug
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Status: Resolved
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Minor
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Resolution: Fixed
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0.4.0
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None
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None
Description
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.