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https://issues.apache.org/jira/browse/HIVE-19016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16469808#comment-16469808
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Haifeng Chen commented on HIVE-19016:
-------------------------------------
[~vihangk1] I have some research on this. And the nested complex type (nested
struct, map and list) is not yet implement in Parquet vectorized reader. I got
a study on the details and trying figure out a implementation. I will try to
work out a patch.
> Vectorization and Parquet: When vectorized, parquet_nested_complex.q produces
> RuntimeException: Unsupported type used
> ---------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-19016
> URL: https://issues.apache.org/jira/browse/HIVE-19016
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 3.0.0
> Reporter: Matt McCline
> Assignee: Vihang Karajgaonkar
> Priority: Critical
>
> Adding "SET hive.vectorized.execution.enabled=true;" to
> parquet_nested_complex.q triggers this call stack:
> {noformat}
> Caused by: java.lang.RuntimeException: Unsupported type used in
> list:array<array<array<array<array<array<array<array<array<array<array<array<array<array<array<array<array<array<array<array<array<array<int>>>>>>>>>>>>>>>>>>>>>>
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedParquetRecordReader.checkListColumnSupport(VectorizedParquetRecordReader.java:589)
> ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedParquetRecordReader.buildVectorizedParquetReader(VectorizedParquetRecordReader.java:525)
> ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedParquetRecordReader.checkEndOfRowGroup(VectorizedParquetRecordReader.java:440)
> ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedParquetRecordReader.nextBatch(VectorizedParquetRecordReader.java:401)
> ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedParquetRecordReader.next(VectorizedParquetRecordReader.java:353)
> ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedParquetRecordReader.next(VectorizedParquetRecordReader.java:92)
> ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
> at
> org.apache.hadoop.hive.ql.io.HiveContextAwareRecordReader.doNext(HiveContextAwareRecordReader.java:360)
> ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
> {noformat}
> FYI: [~vihangk1]
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