What's peculiar is that the test script for the loader class that was run a week ago seems also to be failing with the same error. We've added nodes to the cluster; maybe the relevant .jar files haven't been copied over to those nodes. I'll bug our sysadmin about that..
Thanks, Kris On Tue, Mar 01, 2011 at 02:08:32PM -0800, Dmitriy Ryaboy wrote: > Kris, > Check the pig log file. Often "unable to create input slice" is caused by > errors such as not being able to find your loader class, or some dependency > of your loader class. > > D > > On Tue, Mar 1, 2011 at 1:48 PM, Kris Coward <[email protected]> wrote: > > > > > 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 > > -- Kris Coward http://unripe.melon.org/ GPG Fingerprint: 2BF3 957D 310A FEEC 4733 830E 21A4 05C7 1FEB 12B3
