Question

我正在使用Hadoop 0.20.2和Hive 0.11。我已经成功地将hive / hdfs中的一些csv文件插入到单独的表中。完美地选择和加入工作。在尝试分析某些数据时，我需要使用hive的内置函数，如：

SUBSTR
TO_DATE
兰特
等

例如：

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

sid 和请求ID 是字符串，次是时间戳列不幸的是，我在使用这些函数时只会得到错误（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

我在这里做错了什么？

SHOW FUNCTIONS;

告诉我这些功能都在那里......

Answer 1

尝试使用HIVE_HOME / lib中的那些更新HADOOP_HOME / lib中的jackson * .jar，重新启动Hadoop并尝试提交作业。

Answer 2

使用hive + apache hadoop 0.20.2

时遇到了同样的问题

问题是hadoop-0.20.2在lib文件夹中没有这些jackson jar，所以要么每次都在hive控制台中手动添加它：

add jars $HIVE_HOME/lib/jackson-core-asl-1.8.8.jar $HIVE_HOME/lib/jackson-jaxrs-1.8.8.jar $HIVE_HOME/lib/jackson-mapper-asl-1.8.8.jar $HIVE_HOME/lib/jackson-xc-1.8.8.jar;

或者您将所有这些罐子复制到群集中的每台机器上？

Answer 3

尝试使用HIVE_HOME / lib中的那些更新HADOOP_HOME / lib中的jackson * .jar，重新启动Hadoop并尝试提交作业。

谢谢它的运作

Hive内置函数无法正常工作

3 个答案: