hi, all
I encountered an Exception like this:
ERROR org.apache.pig.tools.grunt.Grunt -
org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1000: Error during
parsing. null
at org.apache.pig.PigServer$Graph.parseQuery(PigServer.java:1641)
at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1584)
at org.apache.pig.PigServer.registerQuery(PigServer.java:584)
at
org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:939)
at
org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:386)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:188)
at
org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:164)
at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:84) at
he.pig.PigWorker.call(BatchPig.java:412)
at he.pig.PigWorker.call(BatchPig.java:386) at
java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166) at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: Failed to parse: null at
org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:180)
at org.apache.pig.PigServer$Graph.parseQuery(PigServer.java:1633)
... 14 more
Caused by: java.lang.NullPointerException
at java.util.Hashtable.put(Hashtable.java:432)
at java.util.Properties.setProperty(Properties.java:161) at
org.apache.hadoop.conf.Configuration.set(Configuration.java:438)
at
org.apache.pig.backend.hadoop.datastorage.ConfigurationUtil.toConfiguration(ConfigurationUtil.java:43)
at
org.apache.pig.parser.LogicalPlanBuilder.buildLoadOp(LogicalPlanBuilder.java:375)
at
org.apache.pig.parser.LogicalPlanGenerator.load_clause(LogicalPlanGenerator.java:2955)
at
org.apache.pig.parser.LogicalPlanGenerator.op_clause(LogicalPlanGenerator.java:1078)
at
org.apache.pig.parser.LogicalPlanGenerator.general_statement(LogicalPlanGenerator.java:683)
at
org.apache.pig.parser.LogicalPlanGenerator.statement(LogicalPlanGenerator.java:483)
at
org.apache.pig.parser.LogicalPlanGenerator.query(LogicalPlanGenerator.java:369)
at
org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:171)
... 15 more
Can we change the error message to provide more information? Or how about we
prevent this error to happen like this?
org.apache.pig.backend.hadoop.datastorage.ConfigurationUtil:toConfiguration(Properties
properties)
while (iter.hasMoreElements()) {
final String key = (String) iter.nextElement();
final String val = properties.getProperty(key);
if(key == null || val == null){
// show more information here and do not set the config
continue;
}
config.set(key, val);
}
Haitao Yao
[email protected]
weibo: @haitao_yao
Skype: haitao.yao.final
