when I exec pig using java in eclipse,I always get error.my cluster is right,Can someone please help in solving the issue? Regards this is log: 2015-11-19 18:48:07.175 [pool-3-thread-3] WARN org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher - There is no log file to write to. 2015-11-19 18:48:07.175 [pool-3-thread-3] ERROR org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher - Backend error message during job submission java.io.IOException: No valid local directories in property: mapred.local.dir at org.apache.hadoop.conf.Configuration.getLocalPath(Configuration.java:2219) at org.apache.hadoop.mapred.JobConf.getLocalPath(JobConf.java:500) at org.apache.hadoop.mapred.LocalJobRunner$Job.<init>(LocalJobRunner.java:141) at org.apache.hadoop.mapred.LocalJobRunner.submitJob(LocalJobRunner.java:634) at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:1066) at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:976) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1776) at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:976) at org.apache.hadoop.mapreduce.Job.submit(Job.java:582) at org.apache.hadoop.mapreduce.lib.jobcontrol.ControlledJob.submit(ControlledJob.java:319) at org.apache.hadoop.mapreduce.lib.jobcontrol.JobControl.startReadyJobs(JobControl.java:239) at org.apache.hadoop.mapreduce.lib.jobcontrol.JobControl.run(JobControl.java:270) at org.apache.pig.backend.hadoop23.PigJobControl.run(PigJobControl.java:160) at java.lang.Thread.run(Thread.java:745) at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher$1.run(MapReduceLauncher.java:270) 2015-11-19 18:48:07.179 [pool-3-thread-3] ERROR org.apache.pig.tools.pigstats.SimplePigStats - ERROR: No valid local directories in property: mapred.local.dir 2015-11-19 18:48:07.179 [pool-3-thread-3] ERROR org.apache.pig.tools.pigstats.PigStatsUtil - 1 map reduce job(s) failed! 2015-11-19 18:48:07.180 [pool-3-thread-3] INFO org.apache.pig.tools.pigstats.SimplePigStats - Script Statistics: HadoopVersionPigVersionUserIdStartedAtFinishedAtFeatures 2.6.0-bc1.2.00.12.0-cdh5.0.0root2015-11-19 18:47:492015-11-19 18:48:07GROUP_BY,FILTER
