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Pig >> mail # user >> Problems loading a datafile..


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Re: Problems loading a datafile..

I get the output:

rw-r--r--   2 kris supergroup     172694 2011-02-25 01:59 /path/to/file/item/ex/subdir

-K

On Tue, Mar 01, 2011 at 12:46:31PM -0800, Dmitriy Ryaboy wrote:
> What happens when you "hadoop fs -lsr" those paths?
>
> D
>
> On Sun, Feb 27, 2011 at 7:47 PM, Kris Coward <[EMAIL PROTECTED]> wrote:
>
> >
> > So I finally got a couple of test scripts running on my cluster to take
> > a sample data file, load it, do a little processing, store it, load it,
> > do a little more processing, and dump the results.
> >
> > Once these were working, I set to parsing and storing some real data,
> > but when got an "Unable to create input slice" error when trying to load
> > this data back out again. This happened with each of:
> >
> > foo = LOAD '/path/to/file/{item,list,glob}/*/subdir' USING
> > com.twitter.elephantbird.pig.load.LzoTokenizedLoader(',') AS (schema:...);
> > foo = LOAD '/path/to/file/item/*/subdir' USING
> > com.twitter.elephantbird.pig.load.LzoTokenizedLoader(',') AS (schema:...);
> > foo = LOAD '/path/to/file/item/ex/subdir' USING
> > com.twitter.elephantbird.pig.load.LzoTokenizedLoader(',') AS (schema:...);
> >
> > and yielded the error (the same each time, except for the name/glob
> > used):
> >
> > ERROR 2997: Unable to recreate exception from backend error:
> > org.apache.pig.backend.executionengine.ExecException: ERROR 2118: Unable to
> > create input slice for:
> > hdfs://master.hadoop:9000//path/to/file/item/ex/subdir
> > org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable to
> > open iterator for alias foo
> >        at org.apache.pig.PigServer.openIterator(PigServer.java:482)
> >        at
> > org.apache.pig.tools.grunt.GruntParser.processDump(GruntParser.java:539)
> >        at
> > org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:241)
> >        at
> > org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:168)
> >        at
> > org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:144)
> >        at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:75)
> >        at org.apache.pig.Main.main(Main.java:352)
> > Caused by: org.apache.pig.backend.executionengine.ExecException: ERROR
> > 2997: Unable to recreate exception from backend error:
> > org.apache.pig.backend.executionengine.ExecException: ERROR 2118: Unable to
> > create input slice for:
> > hdfs://master.hadoop:9000/path/to/file/item/ex/subdir
> >        at
> > org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher.getStats(Launcher.java:176)
> >        at
> > org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher.launchPig(MapReduceLauncher.java:253)
> >        at
> > org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.execute(HExecutionEngine.java:249)
> >        at
> > org.apache.pig.PigServer.executeCompiledLogicalPlan(PigServer.java:781)
> >        at org.apache.pig.PigServer.store(PigServer.java:529)
> >        at org.apache.pig.PigServer.openIterator(PigServer.java:465)
> >        ... 6 more
> >
> >
> > Anyone have any suggestions why this may be happening and how to fix it?
> >
> > Thanks,
> > Kris
> >
> > --
> > Kris Coward                                     http://unripe.melon.org/
> > GPG Fingerprint: 2BF3 957D 310A FEEC 4733  830E 21A4 05C7 1FEB 12B3
> >

--
Kris Coward http://unripe.melon.org/
GPG Fingerprint: 2BF3 957D 310A FEEC 4733  830E 21A4 05C7 1FEB 12B3
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB