java.lang.RuntimeException: Failed to create DataStorage

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java.lang.RuntimeException: Failed to create DataStorage
at org.apache.hadoop.ipc.Client.call(Client.java:1070)
at com.sun.proxy.$Proxy4.getProtocolVersion(Unknown Source)
at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:396)
at org.apache.hadoop.hdfs.DFSClient.createRPCNamenode(DFSClient.java:119)
at org.apache.hadoop.hdfs.DFSClient.(DFSClient.java:238)
at org.apache.hadoop.hdfs.DFSClient.(DFSClient.java:203)
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1386)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:66)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1404)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:254)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:123)
at org.apache.pig.backend.hadoop.datastorage.HDataStorage.init(HDataStorage.java:72)
at org.apache.pig.backend.hadoop.datastorage.HDataStorage.(HDataStorage.java:58)
at org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.init(HExecutionEngine.java:241)
at org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.init(HExecutionEngine.java:111)
at org.apache.pig.impl.PigContext.connect(PigContext.java:311)
at org.apache.pig.PigServer.(PigServer.java:226)
at org.apache.pig.PigServer.(PigServer.java:214)
at org.apache.pig.PigServer.(PigServer.java:187)
at org.apache.pig.PigServer.(PigServer.java:179)
at com.pig.PIGScriptRunner.execPIGScript(PIGScriptRunner.java:48)
at com.pig.PIGScriptRunner.main(PIGScriptRunner.java:77)

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