Thanks I made a last ditch effort and bounced my cluster. The error went away must be Cloudera gremlin.
Thanks for the suggestions and help. Best, Steven On Apr 24, 2014, at 12:25 PM, Darpan R <[email protected]> wrote: > Please do a sanity of the datacheck : colA2 might not be cast-able to > numeric for one or more records. > > > > > On 24 April 2014 22:24, Pradeep Gollakota <[email protected]> wrote: > >> Whats the LoadFunc you're using? >> >> >> On Thu, Apr 24, 2014 at 9:28 AM, Swapnil Shinde <[email protected] >>> wrote: >> >>> I am facing very weird problem while multiplication. >>> Pig simplified code snippet- >>> A = LOAD 'file_A' AS (colA1 : double, colA2 : double); >>> describe A; >>> *A: {colA1: double,colA2: double}* >>> B = LOAD 'file_B' AS (colB1 : double, colB2 : double); >>> describe B; >>> *B: {colB1: double,colB2: double}* >>> >>> joined = JOIN A BY (colA1) LEFT OUTER, B BY (colB1) USING 'replicated'; >>> SPLIT joined INTO split1 IF A::colB1 IS NOT NULL, >>> split2 IF (A::colB1 IS NULL AND A;:colA2 == >> 2), >>> split3 IF (A::colB1 IS NULL AND A;:colA2 != >> 2); >>> describe split1; >>> * split1: {A::colA1: double,A::colA2: double,B::colB1: >>> double,B::colB2: double}* >>> >>> >>> D = FOREACH split1 GENERATE (A::colA1 * B::colB1) AS newCol; >>> >>> *Error-* >>> 2014-04-24 10:02:30,458 [main] ERROR >>> org.apache.pig.tools.pigstats.SimplePigStats - ERROR 0: Exception while >>> executing [Multiply (Name: Multiply[double] - scope-6 Operator Key: >>> scope-6) children: [[POProject (Name: Project[double][1] - scope-3 >> Operator >>> Key: scope-3) children: null at []], [POCast (Name: Cast[double] - >> scope-5 >>> Operator Key: scope-5) children: [[ConstantExpression (Name: Constant(3) >> - >>> scope-4 Operator Key: scope-4) children: null at []]] at []]] at []]: >>> java.lang.ClassCastException: org.apache.pig.data.DataByteArray cannot be >>> cast to java.lang.Number >>> >>> Stack tarce- >>> org.apache.pig.backend.executionengine.ExecException: ERROR 0: Exception >>> while executing [Multiply (Name: Multiply[double] - scope-6 Operator Key: >>> scope-6) children: [[POProject (Name: Project[double][1] - scope-3 >> Operator >>> Key: scope-3) children: null at []], [POCast (Name: Cast[double] - >> scope-5 >>> Operator Key: scope-5) children: [[ConstantExpression (Name: Constant(3) >> - >>> scope-4 Operator Key: scope-4) children: null at []]] at []]] at []]: >>> java.lang.ClassCastException: org.apache.pig.data.DataByteArray cannot be >>> cast to java.lang.Number at >>> >>> >> org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.getNext(PhysicalOperator.java:338) >>> at >>> >>> >> org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.processPlan(POForEach.java:378) >>> at >>> >>> >> org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNextTuple(POForEach.java:298) >>> at >>> >>> >> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.runPipeline(PigGenericMapBase.java:282) >>> at >>> >>> >> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:277) >>> at >>> >>> >> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapBase.map(PigGenericMapBase.java:64) >>> at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144) at >>> org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:681) at >>> org.apache.hadoop.mapred.MapTask.run(MapTask.java:347) at >>> org.apache.hadoop.mapred.Child$4.run(Child.java:270) at >>> java.security.AccessController.doPrivileged(Native Method) at >>> javax.security.auth.Subject.doAs(Subject.java:396) at >>> >>> >> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1127) >>> at org.apache.hadoop.mapred.Child.main(Child.java:264) Caused by: >>> java.lang.ClassCastException: org.apache.pig.data.DataByteArray cannot be >>> cast to java.lang.Number at >>> >>> >> org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.Multiply.genericGetNext(Multiply.java:89) >>> at >>> >>> >> org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.Multiply.getNextDouble(Multiply.java:104) >>> at >>> >>> >> org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.getNext(PhysicalOperator.java:317) >>> ... 13 more >>> >>> >>> I tried below options but no luck- >>> 1) Doing addition instead of multiplication and I get similar error. >>> 2) I verified multiplication for double works with few sample files. >>> 3) I tried casting it again to double before multiplication too. >>> 4) I tried storing result before multiplication and loading it back. >> still >>> same error. >>> >>> I am not sure why it's throwing classCastException when schema has double >>> as data type. >>> Please let me know if need any further information or missing something >> in >>> above simplified snippet. >>> Any help is very much appreciated. >>> >>> Thanks >>> >>
