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Posted to dev@pig.apache.org by Apache Hudson Server <hu...@hudson.zones.apache.org> on 2008/03/14 13:29:15 UTC
Build failed in Hudson: Pig-trunk #122
See http://hudson.zones.apache.org/hudson/job/Pig-trunk/122/changes
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[...truncated 330 lines...]
[javadoc] symbol : class ParseException
[javadoc] location: package org.apache.pig.impl.logicalLayer.parser
[javadoc] import org.apache.pig.impl.logicalLayer.parser.ParseException;
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/logicalLayer/LOLoad.java:47: cannot find symbol
[javadoc] symbol : class ParseException
[javadoc] location: class org.apache.pig.impl.logicalLayer.LOLoad
[javadoc] FileSpec inputFileSpec) throws IOException, ParseException {
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/io/BufferedPositionedInputStream.java:30: package org.apache.tools.bzip2r does not exist
[javadoc] import org.apache.tools.bzip2r.CBZip2InputStream;
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/hadoop/executionengine/HExecutionEngine.java:40: package org.apache.pig.shock does not exist
[javadoc] import org.apache.pig.shock.SSHSocketImplFactory;
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/hadoop/executionengine/mapreduceExec/PigInputFormat.java:46: package org.apache.tools.bzip2r does not exist
[javadoc] import org.apache.tools.bzip2r.CBZip2InputStream;
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/hadoop/executionengine/mapreduceExec/PigOutputFormat.java:37: package org.apache.tools.bzip2r does not exist
[javadoc] import org.apache.tools.bzip2r.BZip2Constants;
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/hadoop/executionengine/mapreduceExec/PigOutputFormat.java:38: package org.apache.tools.bzip2r does not exist
[javadoc] import org.apache.tools.bzip2r.CBZip2OutputStream;
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/streaming/PigExecutableManager.java:40: cannot find symbol
[javadoc] symbol : class ParseException
[javadoc] location: package org.apache.pig.impl.logicalLayer.parser
[javadoc] import org.apache.pig.impl.logicalLayer.parser.ParseException;
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/logicalLayer/LogicalPlanBuilder.java:25: cannot find symbol
[javadoc] symbol : class ParseException
[javadoc] location: package org.apache.pig.impl.logicalLayer.parser
[javadoc] import org.apache.pig.impl.logicalLayer.parser.ParseException;
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/logicalLayer/LogicalPlanBuilder.java:26: cannot find symbol
[javadoc] symbol : class QueryParser
[javadoc] location: package org.apache.pig.impl.logicalLayer.parser
[javadoc] import org.apache.pig.impl.logicalLayer.parser.QueryParser;
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/logicalLayer/LogicalPlanBuilder.java:44: cannot find symbol
[javadoc] symbol : class ParseException
[javadoc] location: class org.apache.pig.impl.logicalLayer.LogicalPlanBuilder
[javadoc] throws IOException, ParseException {
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/tools/grunt/GruntParser.java:23: package org.apache.pig.tools.pigscript.parser does not exist
[javadoc] import org.apache.pig.tools.pigscript.parser.ParseException;
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/tools/grunt/GruntParser.java:24: package org.apache.pig.tools.pigscript.parser does not exist
[javadoc] import org.apache.pig.tools.pigscript.parser.PigScriptParser;
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/tools/grunt/GruntParser.java:25: package org.apache.pig.tools.pigscript.parser does not exist
[javadoc] import org.apache.pig.tools.pigscript.parser.PigScriptParserTokenManager;
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/tools/grunt/GruntParser.java:27: cannot find symbol
[javadoc] symbol: class PigScriptParser
[javadoc] public class GruntParser extends PigScriptParser {
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/tools/grunt/GruntParser.java:46: cannot find symbol
[javadoc] symbol : class PigScriptParserTokenManager
[javadoc] location: class org.apache.pig.tools.grunt.GruntParser
[javadoc] public GruntParser(PigScriptParserTokenManager tm) {
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/tools/grunt/GruntParser.java:55: cannot find symbol
[javadoc] symbol : class ParseException
[javadoc] location: class org.apache.pig.tools.grunt.GruntParser
[javadoc] public void parseStopOnError() throws IOException, ParseException
[javadoc] ^
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/tools/grunt/GruntParser.java:131: cannot find symbol
[javadoc] symbol : class ParseException
[javadoc] location: class org.apache.pig.tools.grunt.GruntParser
[javadoc] protected void processSet(String key, String value) throws IOException, ParseException {
[javadoc] ^
[javadoc] javadoc: warning - Error reading file: /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/build/docs/api/${javadoc.link.java}/package-list
[javadoc] Standard Doclet version 1.6.0_04
[javadoc] Building tree for all the packages and classes...
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/EvalFunc.java:151: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/PigServer.java:383: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/PigServer.java:412: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/PigServer.java:156: warning - @param argument "aliases" is not a parameter name.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/PigServer.java:224: warning - @return tag cannot be used in method with void return type.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/PigServer.java:301: warning - @param argument "id:" is not a parameter name.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/PigServer.java:301: warning - @param argument "filename:" is not a parameter name.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/datastorage/ElementDescriptor.java:94: warning - @param argument "name" is not a parameter name.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/executionengine/ExecJob.java:54: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/executionengine/ExecJob.java:47: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/executionengine/ExecJob.java:63: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/executionengine/ExecJob.java:38: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/executionengine/ExecutionEngine.java:108: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/executionengine/ExecutionEngine.java:85: warning - @throws tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/executionengine/ExecutionEngine.java:100: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/executionengine/ExecutionEngine.java:72: warning - @param argument "logical" is not a parameter name.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/hadoop/executionengine/mapreduceExec/MapReduceLauncher.java:117: warning - @param argument "mapFuncs" is not a parameter name.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/hadoop/executionengine/mapreduceExec/MapReduceLauncher.java:117: warning - @param argument "groupFuncs" is not a parameter name.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/hadoop/executionengine/mapreduceExec/MapReduceLauncher.java:117: warning - @param argument "reduceFunc" is not a parameter name.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/hadoop/executionengine/mapreduceExec/MapReduceLauncher.java:117: warning - @param argument "mapTasks" is not a parameter name.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/hadoop/executionengine/mapreduceExec/MapReduceLauncher.java:117: warning - @param argument "reduceTasks" is not a parameter name.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/hadoop/executionengine/mapreduceExec/MapReduceLauncher.java:117: warning - @param argument "input" is not a parameter name.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/backend/hadoop/executionengine/mapreduceExec/MapReduceLauncher.java:117: warning - @param argument "output" is not a parameter name.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/data/DataMap.java:95: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/PigContext.java:320: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/PigContext.java:307: warning - @param argument "aliases" is not a parameter name.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/eval/EvalSpec.java:136: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/eval/EvalSpec.java:152: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/eval/EvalSpec.java:126: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/eval/EvalSpec.java:184: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/eval/EvalSpec.java:213: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/eval/EvalSpec.java:152: warning - @param argument "input" is not a parameter name.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/eval/FuncEvalSpec.java:231: warning - @param argument "in" is not a parameter name.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/eval/FuncEvalSpec.java:291: warning - @param argument "finalTuplePos" is not a parameter name.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/io/FileLocalizer.java:150: warning - @return tag has no arguments.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/util/JarManager.java:97: warning - @return tag cannot be used in method with void return type.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/util/JarManager.java:256: warning - Tag @author cannot be used in method documentation. It can only be used in the following types of documentation: overview, package, class/interface.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/util/Spillable.java:28: warning - @returns is an unknown tag.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/util/Spillable.java:33: warning - @returns is an unknown tag.
[javadoc] /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/tools/cmdline/CmdLineParser.java:64: warning - @param argument "valueExpected" is not a parameter name.
[javadoc] Building index for all the packages and classes...
[javadoc] Building index for all classes...
[javadoc] javadoc: error - Error while reading file /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/overview.html
[javadoc] Generating /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/build/docs/api/stylesheet.css...
[javadoc] 1 error
[javadoc] 61 warnings
doc:
init:
cc-compile:
[jjtree] Java Compiler Compiler Version 4.0 (Tree Builder)
[jjtree] (type "jjtree" with no arguments for help)
[jjtree] Reading from file /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/impl/logicalLayer/parser/QueryParser.jjt . . .
[jjtree] File "/zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src-gen/org/apache/pig/impl/logicalLayer/parser/Node.java" does not exist. Will create one.
[jjtree] File "/zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src-gen/org/apache/pig/impl/logicalLayer/parser/SimpleNode.java" does not exist. Will create one.
[jjtree] Annotated grammar generated successfully in /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src-gen/org/apache/pig/impl/logicalLayer/parser/QueryParser.jj
[javacc] Java Compiler Compiler Version 4.0 (Parser Generator)
[javacc] (type "javacc" with no arguments for help)
[javacc] Reading from file /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src-gen/org/apache/pig/impl/logicalLayer/parser/QueryParser.jj . . .
[javacc] File "TokenMgrError.java" does not exist. Will create one.
[javacc] File "ParseException.java" does not exist. Will create one.
[javacc] File "Token.java" does not exist. Will create one.
[javacc] File "SimpleCharStream.java" does not exist. Will create one.
[javacc] Parser generated successfully.
[javacc] Java Compiler Compiler Version 4.0 (Parser Generator)
[javacc] (type "javacc" with no arguments for help)
[javacc] Reading from file /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/src/org/apache/pig/tools/pigscript/parser/PigScriptParser.jj . . .
[javacc] File "TokenMgrError.java" does not exist. Will create one.
[javacc] File "ParseException.java" does not exist. Will create one.
[javacc] File "Token.java" does not exist. Will create one.
[javacc] File "SimpleCharStream.java" does not exist. Will create one.
[javacc] Parser generated successfully.
compile:
[echo] *** Building Main Sources ***
compile-sources:
[javac] Compiling 194 source files to /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/build/classes
[javac] Note: Some input files use or override a deprecated API.
[javac] Note: Recompile with -Xlint:deprecation for details.
[javac] Note: Some input files use unchecked or unsafe operations.
[javac] Note: Recompile with -Xlint:unchecked for details.
jar:
jarWithSvn:
buildJar:
[echo] svnString 637063
[jar] Building jar: /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/build/pig-2008-03-14_11-30-54-core.jar
[jar] Building jar: /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/build/pig-2008-03-14_11-30-54.jar
[copy] Copying 1 file to /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk
jarWithOutSvn:
init:
cc-compile:
compile:
[echo] *** Building Main Sources ***
compile-sources:
compile-test:
[echo] *** Building Test Sources ***
compile-sources:
[javac] Compiling 29 source files to /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/build/test/classes
[javac] Note: /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/test/org/apache/pig/test/MiniCluster.java uses or overrides a deprecated API.
[javac] Note: Recompile with -Xlint:deprecation for details.
jar:
jarWithSvn:
buildJar:
[echo] svnString 637063
jarWithOutSvn:
test:
[mkdir] Created dir: /zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/build/test/logs
[junit] Running org.apache.pig.test.TestAlgebraicEval
[junit] Tests run: 5, Failures: 0, Errors: 0, Time elapsed: 59.433 sec
[junit] Running org.apache.pig.test.TestBuiltin
[junit] Tests run: 21, Failures: 0, Errors: 0, Time elapsed: 7.553 sec
[junit] Running org.apache.pig.test.TestCmdLineParser
[junit] Tests run: 17, Failures: 0, Errors: 0, Time elapsed: 0.188 sec
[junit] Running org.apache.pig.test.TestCombiner
[junit] Tests run: 2, Failures: 0, Errors: 0, Time elapsed: 30.603 sec
[junit] Running org.apache.pig.test.TestCompressedFiles
[junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 20.747 sec
[junit] Running org.apache.pig.test.TestDataBag
[junit] Tests run: 18, Failures: 0, Errors: 0, Time elapsed: 2.27 sec
[junit] Running org.apache.pig.test.TestDataModel
[junit] Tests run: 4, Failures: 0, Errors: 0, Time elapsed: 0.591 sec
[junit] Running org.apache.pig.test.TestEvalPipeline
[junit] Running org.apache.pig.test.TestEvalPipeline
[junit] Tests run: 1, Failures: 0, Errors: 1, Time elapsed: 0 sec
[junit] Test org.apache.pig.test.TestEvalPipeline FAILED (timeout)
[junit] Running org.apache.pig.test.TestFilterOpNumeric
[junit] Tests run: 8, Failures: 0, Errors: 0, Time elapsed: 486.787 sec
[junit] Running org.apache.pig.test.TestFilterOpString
[junit] Tests run: 6, Failures: 0, Errors: 0, Time elapsed: 69.611 sec
[junit] Running org.apache.pig.test.TestGrunt
[junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 0.135 sec
[junit] Running org.apache.pig.test.TestInfixArithmetic
[junit] Tests run: 4, Failures: 0, Errors: 0, Time elapsed: 178.828 sec
[junit] Running org.apache.pig.test.TestLogicalPlanBuilder
[junit] Tests run: 47, Failures: 0, Errors: 0, Time elapsed: 1.021 sec
[junit] Running org.apache.pig.test.TestMapReduce
[junit] Tests run: 5, Failures: 0, Errors: 0, Time elapsed: 52.621 sec
[junit] Running org.apache.pig.test.TestPigFile
[junit] Tests run: 3, Failures: 0, Errors: 0, Time elapsed: 4.644 sec
[junit] Running org.apache.pig.test.TestPigServer
[junit] Tests run: 4, Failures: 0, Errors: 0, Time elapsed: 17.106 sec
[junit] Running org.apache.pig.test.TestPigSplit
[junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 168.982 sec
[junit] Running org.apache.pig.test.TestStore
[junit] Running org.apache.pig.test.TestStore
[junit] Tests run: 1, Failures: 0, Errors: 1, Time elapsed: 0 sec
[junit] Test org.apache.pig.test.TestStore FAILED (timeout)
[junit] Running org.apache.pig.test.TestStreaming
[junit] Tests run: 4, Failures: 0, Errors: 0, Time elapsed: 66.41 sec
BUILD FAILED
/zonestorage/hudson/home/hudson/hudson/jobs/Pig-trunk/workspace/trunk/build.xml:271: Tests failed!
Total time: 55 minutes 51 seconds
Publishing Javadoc
Recording test results
Hudson build is back to normal: Pig-trunk #123
Posted by Apache Hudson Server <hu...@hudson.zones.apache.org>.
See http://hudson.zones.apache.org/hudson/job/Pig-trunk/123/changes