我正在使用hadoop0.20.2和hive0.11。我已经成功地将一些csv文件插入到hive/hdfs中的不同表中。完美地选择和加入工作。在尝试分析一些数据时，我需要利用hive的内置功能，如：
子字符串
截止日期
兰特
等。
例如：

select sid, request_id, to_date(times), to_unix_timestamp(times) from contents where sid = '5000000032066010373';

这里的sid和request id是字符串，times是timestamp列，在使用这些函数时，我只会得到错误（总是相同的错误堆栈）：

java.lang.RuntimeException: Error in configuring object
        at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:93)
        at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:64)
        at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117)
        at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:354)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:307)
        at org.apache.hadoop.mapred.Child.main(Child.java:170)
Caused by: java.lang.reflect.InvocationTargetException
        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:601)
        at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:88)
        ... 5 more
Caused by: java.lang.RuntimeException: Error in configuring object
        at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:93)
        at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:64)
        at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117)
        at org.apache.hadoop.mapred.MapRunner.configure(MapRunner.java:34)
        ... 10 more
Caused by: java.lang.reflect.InvocationTargetException
        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:601)
        at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:88)
        ... 13 more
Caused by: java.lang.RuntimeException: Map operator initialization failed
        at org.apache.hadoop.hive.ql.exec.ExecMapper.configure(ExecMapper.java:121)
        ... 18 more
Caused by: java.lang.NoClassDefFoundError: org/codehaus/jackson/JsonFactory
        at org.apache.hadoop.hive.ql.udf.generic.GenericUDTFJSONTuple.<clinit>(GenericUDTFJSONTuple.java:56)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
        at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:113)
        at org.apache.hadoop.hive.ql.exec.FunctionRegistry.registerGenericUDTF(FunctionRegistry.java:526)
        at org.apache.hadoop.hive.ql.exec.FunctionRegistry.registerGenericUDTF(FunctionRegistry.java:520)
        at org.apache.hadoop.hive.ql.exec.FunctionRegistry.<clinit>(FunctionRegistry.java:423)
        at org.apache.hadoop.hive.ql.exec.DefaultUDFMethodResolver.getEvalMethod(DefaultUDFMethodResolver.java:59)
        at org.apache.hadoop.hive.ql.udf.generic.GenericUDFBridge.initialize(GenericUDFBridge.java:154)
        at org.apache.hadoop.hive.ql.udf.generic.GenericUDF.initializeAndFoldConstants(GenericUDF.java:111)
        at org.apache.hadoop.hive.ql.exec.ExprNodeGenericFuncEvaluator.initialize(ExprNodeGenericFuncEvaluator.java:141)
        at org.apache.hadoop.hive.ql.exec.Operator.initEvaluators(Operator.java:970)
        at org.apache.hadoop.hive.ql.exec.Operator.initEvaluatorsAndReturnStruct(Operator.java:996)
        at org.apache.hadoop.hive.ql.exec.SelectOperator.initializeOp(SelectOperator.java:60)
        at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:375)
        at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:451)
        at org.apache.hadoop.hive.ql.exec.Operator.initializeChildren(Operator.java:407)
        at org.apache.hadoop.hive.ql.exec.FilterOperator.initializeOp(FilterOperator.java:78)
        at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:375)
        at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:451)
        at org.apache.hadoop.hive.ql.exec.Operator.initializeChildren(Operator.java:407)
        at org.apache.hadoop.hive.ql.exec.TableScanOperator.initializeOp(TableScanOperator.java:186)
        at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:375)
        at org.apache.hadoop.hive.ql.exec.MapOperator.initializeOp(MapOperator.java:543)
        at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:375)
        at org.apache.hadoop.hive.ql.exec.ExecMapper.configure(ExecMapper.java:100)
        ... 18 more
Caused by: java.lang.ClassNotFoundException: org.codehaus.jackson.JsonFactory

我做错什么了？

SHOW FUNCTIONS;

告诉我这些函数在里面。。。