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From "Hari Sankar Sivarama Subramaniyan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-5199) Read Only Custom SerDe works with HDP 1.1 but not with HDP 1.3
Date Tue, 03 Sep 2013 20:41:51 GMT
Hari Sankar Sivarama Subramaniyan created HIVE-5199:
-------------------------------------------------------

             Summary: Read Only Custom SerDe works with HDP 1.1 but not with HDP 1.3
                 Key: HIVE-5199
                 URL: https://issues.apache.org/jira/browse/HIVE-5199
             Project: Hive
          Issue Type: Bug
            Reporter: Hari Sankar Sivarama Subramaniyan
            Assignee: Hari Sankar Sivarama Subramaniyan
            Priority: Critical


Custom serdes which used to work in HDP 1.1 is no longer working with HDP 1.3.
The issue happens when the partition serde is not of settable type in HDP 1.3. The below exception
happens via FetchOperator as well as MapOperator. 

Inside FetchOperator consider the following call:
getRecordReader()->ObjectInspectorConverters. getConverter()
The output object inspector is of settable type(because it is generated via ObjectInspectorConverters.getConvertedOI())
where as the input object inspector that gets passed  as serde.getObjectorInspector() and
is non-settable. Inside  getConverter(), the (inputOI.equals(outputOI)) check fails and the
switch statement tries to cast the non-settable object inspector to a settable object inspector.
 

The stack trace as follows:
2013-08-28 17:57:25,307 ERROR CliDriver (SessionState.java:printError(432)) - Failed with
exception java.io.IOException:java.lang.ClassCastException: com.skype.data.whaleshark.hadoop.hive.proto.ProtoMapObjectInspector
cannot be cast to org.apache.hadoop.hive.serde2.objectinspector.SettableMapObjectInspector
java.io.IOException: java.lang.ClassCastException: com.skype.data.whaleshark.hadoop.hive.proto.ProtoMapObjectInspector
cannot be cast to org.apache.hadoop.hive.serde2.objectinspector.SettableMapObjectInspector
at org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:544)
at org.apache.hadoop.hive.ql.exec.FetchOperator.pushRow(FetchOperator.java:488)
at org.apache.hadoop.hive.ql.exec.FetchTask.fetch(FetchTask.java:136)
at org.apache.hadoop.hive.ql.Driver.getResults(Driver.java:1412)
at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:271)
at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:216)
at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:413)
at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:756)
at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:614)
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.RunJar.main(RunJar.java:160)
Caused by: java.lang.ClassCastException: com.skype.data.whaleshark.hadoop.hive.proto.ProtoMapObjectInspector
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.FetchOperator.getRecordReader(FetchOperator.java:406)
at org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:508)

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