[
https://issues.apache.org/jira/browse/PIG-3994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14520446#comment-14520446
]
Daniel Dai commented on PIG-3994:
---------------------------------
[~rohini], actually I don't feel the MR Launcher.getExceptionFromString gives
us much benefit, instead, confuse users a lot with the message "Cannot recreate
exception from backend". Diagnostics information is a string, and in the
context of Tez, it gives exception of all task attempts. Paste one example to
illustrate:
{code}
Vertex failed, vertexName=scope-17, vertexId=vertex_1430347673884_0001_1_02,
diagnostics=[Task failed, taskId=task_1430347673884_0001_1_02_000000,
diagnostics=[TaskAttempt 0 failed, info=[Error: Failure while running
task:org.apache.pig.backend.executionengine.ExecException: ERROR 0: Exception
while executing (Name: d:
Store(file:///Users/daijy/pig4/ooo:org.apache.pig.builtin.PigStorage) -
scope-14 Operator Key: scope-14):
org.apache.pig.backend.executionengine.ExecException: ERROR 2078: Caught error
from UDF: org.apache.pig.test.udf.evalfunc.BadUdf, Out of bounds access [Index:
2, Size: 2]
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.processInput(PhysicalOperator.java:316)
at
org.apache.pig.backend.hadoop.executionengine.tez.plan.operator.POStoreTez.getNextTuple(POStoreTez.java:119)
at
org.apache.pig.backend.hadoop.executionengine.tez.runtime.PigProcessor.runPipeline(PigProcessor.java:319)
at
org.apache.pig.backend.hadoop.executionengine.tez.runtime.PigProcessor.run(PigProcessor.java:196)
at
org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:329)
at
org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:179)
at
org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:171)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
at
org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.callInternal(TezTaskRunner.java:171)
at
org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.callInternal(TezTaskRunner.java:167)
at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.pig.backend.executionengine.ExecException: ERROR 2078:
Caught error from UDF: org.apache.pig.test.udf.evalfunc.BadUdf, Out of bounds
access [Index: 2, Size: 2]
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:393)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNextDataBag(POUserFunc.java:404)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.getNext(PhysicalOperator.java:337)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.processPlan(POForEach.java:400)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNextTuple(POForEach.java:317)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.processInput(PhysicalOperator.java:307)
... 16 more
Caused by: java.lang.IndexOutOfBoundsException: Index: 2, Size: 2
at java.util.ArrayList.rangeCheck(ArrayList.java:635)
at java.util.ArrayList.set(ArrayList.java:426)
at org.apache.pig.data.DefaultTuple.set(DefaultTuple.java:142)
at org.apache.pig.test.udf.evalfunc.BadUdf.exec(BadUdf.java:40)
at org.apache.pig.test.udf.evalfunc.BadUdf.exec(BadUdf.java:28)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:360)
... 21 more
], TaskAttempt 1 failed, info=[Error: Failure while running
task:org.apache.pig.backend.executionengine.ExecException: ERROR 0: Exception
while executing (Name: d:
Store(file:///Users/daijy/pig4/ooo:org.apache.pig.builtin.PigStorage) -
scope-14 Operator Key: scope-14):
org.apache.pig.backend.executionengine.ExecException: ERROR 2078: Caught error
from UDF: org.apache.pig.test.udf.evalfunc.BadUdf, Out of bounds access [Index:
2, Size: 2]
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.processInput(PhysicalOperator.java:316)
at
org.apache.pig.backend.hadoop.executionengine.tez.plan.operator.POStoreTez.getNextTuple(POStoreTez.java:119)
at
org.apache.pig.backend.hadoop.executionengine.tez.runtime.PigProcessor.runPipeline(PigProcessor.java:319)
at
org.apache.pig.backend.hadoop.executionengine.tez.runtime.PigProcessor.run(PigProcessor.java:196)
at
org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:329)
at
org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:179)
at
org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:171)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
at
org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.callInternal(TezTaskRunner.java:171)
at
org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.callInternal(TezTaskRunner.java:167)
at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.pig.backend.executionengine.ExecException: ERROR 2078:
Caught error from UDF: org.apache.pig.test.udf.evalfunc.BadUdf, Out of bounds
access [Index: 2, Size: 2]
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:393)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNextDataBag(POUserFunc.java:404)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.getNext(PhysicalOperator.java:337)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.processPlan(POForEach.java:400)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNextTuple(POForEach.java:317)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.processInput(PhysicalOperator.java:307)
... 16 more
Caused by: java.lang.IndexOutOfBoundsException: Index: 2, Size: 2
at java.util.ArrayList.rangeCheck(ArrayList.java:635)
at java.util.ArrayList.set(ArrayList.java:426)
at org.apache.pig.data.DefaultTuple.set(DefaultTuple.java:142)
at org.apache.pig.test.udf.evalfunc.BadUdf.exec(BadUdf.java:40)
at org.apache.pig.test.udf.evalfunc.BadUdf.exec(BadUdf.java:28)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:360)
... 21 more
], TaskAttempt 2 failed, info=[Error: Failure while running
task:org.apache.pig.backend.executionengine.ExecException: ERROR 0: Exception
while executing (Name: d:
Store(file:///Users/daijy/pig4/ooo:org.apache.pig.builtin.PigStorage) -
scope-14 Operator Key: scope-14):
org.apache.pig.backend.executionengine.ExecException: ERROR 2078: Caught error
from UDF: org.apache.pig.test.udf.evalfunc.BadUdf, Out of bounds access [Index:
2, Size: 2]
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.processInput(PhysicalOperator.java:316)
at
org.apache.pig.backend.hadoop.executionengine.tez.plan.operator.POStoreTez.getNextTuple(POStoreTez.java:119)
at
org.apache.pig.backend.hadoop.executionengine.tez.runtime.PigProcessor.runPipeline(PigProcessor.java:319)
at
org.apache.pig.backend.hadoop.executionengine.tez.runtime.PigProcessor.run(PigProcessor.java:196)
at
org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:329)
at
org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:179)
at
org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:171)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
at
org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.callInternal(TezTaskRunner.java:171)
at
org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.callInternal(TezTaskRunner.java:167)
at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.pig.backend.executionengine.ExecException: ERROR 2078:
Caught error from UDF: org.apache.pig.test.udf.evalfunc.BadUdf, Out of bounds
access [Index: 2, Size: 2]
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:393)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNextDataBag(POUserFunc.java:404)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.getNext(PhysicalOperator.java:337)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.processPlan(POForEach.java:400)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNextTuple(POForEach.java:317)
at
org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.processInput(PhysicalOperator.java:307)
... 16 more
Caused by: java.lang.IndexOutOfBoundsException: Index: 2, Size: 2
at java.util.ArrayList.rangeCheck(ArrayList.java:635)
at java.util.ArrayList.set(ArrayList.java:426)
at org.apache.pig.data.DefaultTuple.set(DefaultTuple.java...
{code}
It would be tricky to create a single exception object from it. I think we
shall just retain the diagnostics string without interpretion. What do you
think?
> Implement getting backend exception for Tez
> -------------------------------------------
>
> Key: PIG-3994
> URL: https://issues.apache.org/jira/browse/PIG-3994
> Project: Pig
> Issue Type: Improvement
> Components: tez
> Reporter: Rohini Palaniswamy
> Fix For: 0.15.0
>
> Attachments: PIG-3994.patch
>
>
> MR constructs Exception of the stacktrace from the failed hadoop job
> TaskReport. Need equivalent in Tez
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
