String funcSpecString = "org.apache.pig.piggybank.storage.HiveColumnarLoader('f1 string,f2 string,f3 string')";
PigServer server = new PigServer(ExecType.LOCAL);
server.setBatchOn();
server.registerFunction(
"org.apache.pig.piggybank.storage.HiveColumnarLoader",
new FuncSpec(funcSpecString));
server.registerQuery("a = LOAD '"
+ yearMonthDayHourPartitionedDir.getAbsolutePath() + "' using "