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From "Stan Rosenberg (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CRUNCH-597) Unable to process parquet files using Hadoop
Date Fri, 18 Mar 2016 16:34:33 GMT
Stan Rosenberg created CRUNCH-597:
-------------------------------------

             Summary: Unable to process parquet files using Hadoop
                 Key: CRUNCH-597
                 URL: https://issues.apache.org/jira/browse/CRUNCH-597
             Project: Crunch
          Issue Type: Bug
          Components: Core, IO
    Affects Versions: 0.13.0
            Reporter: Stan Rosenberg
            Assignee: Josh Wills


Current version of parquet-hadoop results in the following stack trace while attempting to
read from parquet file,

{code}
java.lang.Exception: java.lang.ClassCastException: org.apache.hadoop.mapreduce.lib.input.FileSplit
cannot be cast to parquet.hadoop.ParquetInputSplit
	at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:406)
Caused by: java.lang.ClassCastException: org.apache.hadoop.mapreduce.lib.input.FileSplit cannot
be cast to parquet.hadoop.ParquetInputSplit
	at parquet.hadoop.ParquetRecordReader.initialize(ParquetRecordReader.java:107)
	at org.apache.crunch.impl.mr.run.CrunchRecordReader.initialize(CrunchRecordReader.java:140)
	at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:478)
	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:671)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:330)
	at org.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:268)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
{code}



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