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https://issues.apache.org/jira/browse/HIVE-19225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16465818#comment-16465818
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Amruth S commented on HIVE-19225:
---------------------------------
[~kgyrtkirk], Have updated the description with sample data set to reproduce on
hive 2.3.2
> Class cast exception while running certain queries with UDAF like rank on
> internal struct columns
> -------------------------------------------------------------------------------------------------
>
> Key: HIVE-19225
> URL: https://issues.apache.org/jira/browse/HIVE-19225
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 2.3.2
> Reporter: Amruth S
> Assignee: Amruth S
> Priority: Major
> Attachments: HIVE-19225.patch
>
>
>
> *To reproduce : [tag - 2.3.2]*
> Launch hive in debug mode
> {code:java}
> hive --hiveconf hive.root.logger=DEBUG,console;{code}
> Run the sample sql below
> {code:java}
> SET mapreduce.framework.name=local;
> CREATE TABLE `test_class_cast` as select
> named_struct('a','a','b','b','c','c','d','d','e',true,'f','f','g',timestamp(1),'h','h'),
> 'i';
> select `_c0`.c, `_c0`.g, `_c0`.a, rank() over (partition by `_c0`.c order by
> `_c0`.g desc) as rown,`_c0`.f,`_c0`.e from default.test_class_cast where
> `_c0`.f like '%f%' or `_c0`.f like '%f%' {code}
> Should fail with the exception
> {code:java}
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime
> Error while processing row (tag=0)
> {"key":{"reducesinkkey0":"c","reducesinkkey1":"1970-01-01
> 05:30:00.001"},"value":{"_col0":{"a":"a","b":"b","c":"c","d":"d","e":true,"f":"f","g":"1970-01-01
> 05:30:00.001","h":"h"}}}
> at
> org.apache.hadoop.hive.ql.exec.mr.ExecReducer.reduce(ExecReducer.java:245)
> ~[hive-exec-2.3.2.fk.7.jar:2.3.2.fk.7]
> at org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:444)
> ~[hadoop-mapreduce-client-core-2.6.0.2.2.0.0-2041.jar:?]
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:392)
> ~[hadoop-mapreduce-client-core-2.6.0.2.2.0.0-2041.jar:?]
> at
> org.apache.hadoop.mapred.LocalJobRunner$Job$ReduceTaskRunnable.run(LocalJobRunner.java:319)
> ~[hadoop-mapreduce-client-common-2.6.0.2.2.0.0-2041.jar:?]
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> ~[?:1.8.0_92]
> at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_92]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> ~[?:1.8.0_92]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> ~[?:1.8.0_92]
> at java.lang.Thread.run(Thread.java:745) ~[?:1.8.0_92]
> Caused by: java.lang.ClassCastException:
> org.apache.hadoop.hive.serde2.lazybinary.LazyBinaryStruct cannot be cast to
> org.apache.hadoop.hive.serde2.io.TimestampWritable
> at
> org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableTimestampObjectInspector.getPrimitiveJavaObject(WritableTimestampObjectInspector.java:39)
> ~[hive-exec-2.3.2.fk.7.jar:2.3.2.fk.7]
> at
> org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableTimestampObjectInspector.getPrimitiveJavaObject(WritableTimestampObjectInspector.java:25)
> ~[hive-exec-2.3.2.fk.7.jar:2.3.2.fk.7]
> at
> org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.copyToStandardObject(ObjectInspectorUtils.java:412)
> ~[hive-exec-2.3.2.fk.7.jar:2.3.2.fk.7]
> at
> org.apache.hadoop.hive.ql.udf.generic.GenericUDAFRank.copyToStandardObject(GenericUDAFRank.java:219)
> ~[hive-exec-2.3.2.fk.7.jar:2.3.2.fk.7]{code}
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