Pigserver 队列设置问题

[冰血_ang]

通过Pigserver跑pig任务的时候，想设置一下pig任务的队列，用了以下方式：
pigserver.registerQuery("set mapreduce.job.queuename tool;");
但是在运行过程中报如下错误：
org.apache.pig.PigServer: exception during parsing: Error during parsing. <line 1, column 0> Syntax error, unexpected symbol at or near 'SET'
Failed to parse: <line 1, column 0> Syntax error, unexpected symbol at or near 'SET'
at org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:241)
at org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:179)
at org.apache.pig.PigServer$Graph.parseQuery(PigServer.java:1688)
at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1635)
at org.apache.pig.PigServer.registerQuery(PigServer.java:587)
at org.apache.pig.PigServer.registerQuery(PigServer.java:600)
at com.zachen2.vcoam.PigMain.run(PigMain.java:146)
at com.iflytek.oozie.main.OozieToolRunner.run(OozieToolRunner.java:55)
at com.iflytek.oozie.main.OozieToolRunner.run(OozieToolRunner.java:70)
at com.zachen2.vcoam.PigMain.main(PigMain.java:35)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.oozie.action.hadoop.JavaMain.run(JavaMain.java:56)
at org.apache.oozie.action.hadoop.LauncherMain.run(LauncherMain.java:49)
at org.apache.oozie.action.hadoop.JavaMain.main(JavaMain.java:35)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.oozie.action.hadoop.LauncherMapper.map(LauncherMapper.java:236)
at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:54)
at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:453)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:343)
at org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.runSubtask(LocalContainerLauncher.java:378)
at org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.runTask(LocalContainerLauncher.java:296)
at org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler.access$200(LocalContainerLauncher.java:181)
at org.apache.hadoop.mapred.LocalContainerLauncher$EventHandler$1.run(LocalContainerLauncher.java:224)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
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)
语法错误，哪位大神帮忙解决一下。又或者有没有其他设置pig任务队列的方式？