[PIG-183] Pig could not resolve my udf class

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.1.0
• Patch Info: Patch Available
• Assignee: Pi Song
• Reporter: Xu Zhang
• Created: 03/Apr/08 21:42
• Updated: 24/Mar/10 22:01
• Resolved: 16/Apr/08 18:30

Description

When I ran the following Pig script with the latest Pig stuff, I got an exception for unresolved class. I noticed that org.apache.pig.test.udf.storefunc is not among the packages that Pig searches ([, org.apache.pig.builtin., com.yahoo.pig.yst.sds.ULT., org.apache.pig.impl.builtin.]).

I am sure that the package path for StringStore (org.apache.pig.test.udf.storefunc) is correct in testudf.jar. I attached testudf.jar here with this bug report.

register /path/to/my/jar/testudf.jar;
A = load '/user/pig/tests/data/singlefile/textdoc' using org.apache.pig.test.udf.storefunc.StringStore();
store A into 'results_4_1';

2008-04-03 13:20:25,154 [main] INFO  org.apache.pig.backend.hadoop.executionengine.HExecutionEngine - Connecting to hadoop file system at: wilbur11.labs.corp.sp1.yahoo.com:8020
2008-04-03 13:20:25,781 [main] ERROR org.apache.pig.tools.grunt.Grunt - java.lang.RuntimeException: could not instantiate 'org.apache.pig.test.udf.storefunc.StringStore' with arguments '[]'
        at org.apache.pig.impl.PigContext.instantiateFunc(PigContext.java:504)
        at org.apache.pig.impl.PigContext.instantiateFuncFromSpec(PigContext.java:510)
        at org.apache.pig.impl.io.ValidatingInputFileSpec.getSlicer(ValidatingInputFileSpec.java:50)
        at org.apache.pig.impl.io.ValidatingInputFileSpec.validate(ValidatingInputFileSpec.java:42)
        at org.apache.pig.impl.io.ValidatingInputFileSpec.<init>(ValidatingInputFileSpec.java:37)
        at org.apache.pig.impl.logicalLayer.parser.QueryParser.LoadClause(QueryParser.java:795)
        at org.apache.pig.impl.logicalLayer.parser.QueryParser.BaseExpr(QueryParser.java:628)
        at org.apache.pig.impl.logicalLayer.parser.QueryParser.Expr(QueryParser.java:484)
        at org.apache.pig.impl.logicalLayer.parser.QueryParser.Parse(QueryParser.java:334)
        at org.apache.pig.impl.logicalLayer.LogicalPlanBuilder.parse(LogicalPlanBuilder.java:47)
        at org.apache.pig.PigServer.registerQuery(PigServer.java:262)
        at org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:446)
        at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:226)
        at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:62)
        at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:60)
        at org.apache.pig.Main.main(Main.java:265)
Caused by: java.io.IOException: Could not resolve org.apache.pig.test.udf.storefunc.StringStore using imports: [, org.apache.pig.builtin., com.yahoo.pig.yst.sds.ULT., org.apache.pig.impl.builtin.]
        at org.apache.pig.impl.util.WrappedIOException.wrap(WrappedIOException.java:16)
        at org.apache.pig.impl.PigContext.resolveClassName(PigContext.java:456)
        at org.apache.pig.impl.PigContext.instantiateFunc(PigContext.java:486)
        ... 15 more
Caused by: java.lang.ClassNotFoundException: Could not resolve org.apache.pig.test.udf.storefunc.StringStore using imports: [, org.apache.pig.builtin., com.yahoo.pig.yst.sds.ULT., org.apache.pig.impl.builtin.]
        at org.apache.pig.impl.PigContext.resolveClassName(PigContext.java:455)
        ... 16 more

2008-04-03 13:20:25,784 [main] ERROR org.apache.pig.tools.grunt.Grunt - could not instantiate 'org.apache.pig.test.udf.storefunc.StringStore' with arguments '[]'