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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-4494) ORC map columns get class cast exception in some context
Date Fri, 03 May 2013 21:16:15 GMT
Owen O'Malley created HIVE-4494:
-----------------------------------

             Summary: ORC map columns get class cast exception in some context
                 Key: HIVE-4494
                 URL: https://issues.apache.org/jira/browse/HIVE-4494
             Project: Hive
          Issue Type: Bug
            Reporter: Owen O'Malley
            Assignee: Owen O'Malley


Setting up the test case like:

{quote}
create table map_text (
  name string,
  m map<string,string>
) row format delimited
    fields terminated by '|'
    collection items terminated by ','
    map keys terminated by ':';

create table map_orc (
  name string,
  m map<string,string>
) stored as orc;

cat map.txt
name1|key11:value11,key12:value12,key13:value13
name2|key21:value21,key22:value22,key23:value23
name3|key31:value31,key32:value32,key33:value33

load data local	inpath 'map.txt' into table map_text;

insert overwrite table map_orc select * from map_text;
{quote}

Selecting the name column from orc_map will get the following exception:

{quote}
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:431)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:371)
	at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:396)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1195)
	at org.apache.hadoop.mapred.Child.main(Child.java:249)
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:88)
	... 9 more
Caused by: java.lang.RuntimeException: Error in configuring object
	at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:93)
	at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:64)
	at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117)
	at org.apache.hadoop.mapred.MapRunner.configure(MapRunner.java:34)
	... 14 more
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:88)
	... 17 more
Caused by: java.lang.RuntimeException: Map operator initialization failed
	at org.apache.hadoop.hive.ql.exec.ExecMapper.configure(ExecMapper.java:121)
	... 22 more
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.ClassCastException:
org.apache.hadoop.hive.ql.io.orc.OrcStruct$OrcMapObjectInspector cannot be cast to org.apache.hadoop.hive.serde2.objectinspector.SettableMapObjectInspector
	at org.apache.hadoop.hive.ql.exec.MapOperator.setChildren(MapOperator.java:522)
	at org.apache.hadoop.hive.ql.exec.ExecMapper.configure(ExecMapper.java:90)
	... 22 more
Caused by: java.lang.ClassCastException: org.apache.hadoop.hive.ql.io.orc.OrcStruct$OrcMapObjectInspector
cannot be cast to org.apache.hadoop.hive.serde2.objectinspector.SettableMapObjectInspector
	at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorConverters.getConverter(ObjectInspectorConverters.java:144)
	at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorConverters$StructConverter.<init>(ObjectInspectorConverters.java:307)
	at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorConverters.getConverter(ObjectInspectorConverters.java:138)
	at org.apache.hadoop.hive.ql.exec.MapOperator.initObjectInspector(MapOperator.java:270)
	at org.apache.hadoop.hive.ql.exec.MapOperator.setChildren(MapOperator.java:482)
	... 23 more
{quote}

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