Verbose (unrelated) exception stack is printed when input file in the Load is
not present
-----------------------------------------------------------------------------------------
Key: PIG-471
URL: https://issues.apache.org/jira/browse/PIG-471
Project: Pig
Issue Type: Bug
Affects Versions: types_branch
Reporter: Pradeep Kamath
Assignee: Pradeep Kamath
Fix For: types_branch
When input file in load is absent the following is printed on the screen:
{noformat}
2008-10-06 10:24:28,048 [main] ERROR
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher
- java.io.IOException: bla does not exist
at
org.apache.pig.backend.executionengine.PigSlicer.validate(PigSlicer.java:105)
at
org.apache.pig.impl.io.ValidatingInputFileSpec.validate(ValidatingInputFileSpec.java:59)
at
org.apache.pig.impl.io.ValidatingInputFileSpec.<init>(ValidatingInputFileSpec.java:44)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.getSplits(PigInputFormat.java:200)
at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:742)
at org.apache.hadoop.mapred.jobcontrol.Job.submit(Job.java:370)
at
org.apache.hadoop.mapred.jobcontrol.JobControl.startReadyJobs(JobControl.java:247)
at
org.apache.hadoop.mapred.jobcontrol.JobControl.run(JobControl.java:279)
at java.lang.Thread.run(Thread.java:595)
2008-10-06 10:24:28,061 [main] ERROR org.apache.pig.tools.grunt.GruntParser -
java.io.IOException: Unable to store for alias: 1 [java.io.IOException:
java.lang.NullPointerException
at java.util.TreeMap.getEntry(TreeMap.java:324)
at java.util.TreeMap.get(TreeMap.java:255)
at
org.apache.hadoop.mapred.JobTracker.getMapTaskReports(JobTracker.java:1894)
at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:452)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:888)
]
at
org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.execute(HExecutionEngine.java:255)
at
org.apache.pig.PigServer.executeCompiledLogicalPlan(PigServer.java:647)
at org.apache.pig.PigServer.execute(PigServer.java:638)
at org.apache.pig.PigServer.registerQuery(PigServer.java:278)
at
org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:439)
at
org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:249)
at
org.apache.pig.tools.grunt.GruntParser.parseContOnError(GruntParser.java:94)
at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:58)
at org.apache.pig.Main.main(Main.java:282)
Caused by: org.apache.pig.backend.executionengine.ExecException:
java.io.IOException: java.lang.NullPointerException
at java.util.TreeMap.getEntry(TreeMap.java:324)
at java.util.TreeMap.get(TreeMap.java:255)
at
org.apache.hadoop.mapred.JobTracker.getMapTaskReports(JobTracker.java:1894)
at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:452)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:888)
... 9 more
Caused by: org.apache.hadoop.ipc.RemoteException: java.io.IOException:
java.lang.NullPointerException
at java.util.TreeMap.getEntry(TreeMap.java:324)
at java.util.TreeMap.get(TreeMap.java:255)
at
org.apache.hadoop.mapred.JobTracker.getMapTaskReports(JobTracker.java:1894)
at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:452)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:888)
at org.apache.hadoop.ipc.Client.call(Client.java:715)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:216)
at org.apache.hadoop.mapred.$Proxy1.getMapTaskReports(Unknown Source)
at
org.apache.hadoop.mapred.JobClient.getMapTaskReports(JobClient.java:935)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher.getStats(Launcher.java:90)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher.launchPig(MapReduceLauncher.java:92)
at
org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.execute(HExecutionEngine.java:245)
... 8 more
2008-10-06 10:24:28,061 [main] ERROR org.apache.pig.tools.grunt.GruntParser -
Unable to store for alias: 1 [java.io.IOException:
java.lang.NullPointerException
at java.util.TreeMap.getEntry(TreeMap.java:324)
at java.util.TreeMap.get(TreeMap.java:255)
{noformat}
Of this only the first part which actually tells that the input file is absent
is useful, the rest is misleading and confusing
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