在php中调用pig出现spilt无法创建错误

[M丶Sic]

php中用passthru调用pig出现错误
从shell中调用pig没有问题，文件权限已经全部是777了，到底怎么解决
Backend error message during job submission
-------------------------------------------
org.apache.pig.backend.executionengine.ExecException: ERROR 2118: Unable to create input splits for: file:///var/www/score/student.txt
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.getSplits(PigInputFormat.java:269)
at org.apache.hadoop.mapred.JobClient.writeNewSplits(JobClient.java:885)
at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:779)
at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:730)
at org.apache.hadoop.mapred.jobcontrol.Job.submit(Job.java:378)
at org.apache.hadoop.mapred.jobcontrol.JobControl.startReadyJobs(JobControl.java:247)
at org.apache.hadoop.mapred.jobcontrol.JobControl.run(JobControl.java:279)
at java.lang.Thread.run(Thread.java:744)
Caused by: org.apache.hadoop.mapreduce.lib.input.InvalidInputException: Input path does not exist: file:/var/www/score/student.txt
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.listStatus(FileInputFormat.java:224)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigTextInputFormat.listStatus(PigTextInputFormat.java:36)
at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:241)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigInputFormat.getSplits(PigInputFormat.java:258)
... 7 more

Pig Stack Trace
---------------
ERROR 2997: Unable to recreate exception from backend error: org.apache.pig.backend.executionengine.ExecException: ERROR 2118: Unable to create input splits for: file:///var/www/score/student.txt

org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable to open iterator for alias information
at org.apache.pig.PigServer.openIterator(PigServer.java:521)
at org.apache.pig.tools.grunt.GruntParser.processDump(GruntParser.java:544)
at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:241)
at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:162)
at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:138)
at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:89)
at org.apache.pig.Main.main(Main.java:391)
Caused by: org.apache.pig.backend.executionengine.ExecException: ERROR 2997: Unable to recreate exception from backend error: org.apache.pig.backend.executionengine.ExecException: ERROR 2118: Unable to create input splits for: file:///var/www/score/student.txt
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher.getStats(Launcher.java:169)
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher.launchPig(MapReduceLauncher.java:268)
at org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.execute(HExecutionEngine.java:308)
at org.apache.pig.PigServer.executeCompiledLogicalPlan(PigServer.java:835)
at org.apache.pig.PigServer.store(PigServer.java:569)
at org.apache.pig.PigServer.openIterator(PigServer.java:504)
... 6 more
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