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https://issues.apache.org/jira/browse/HIVE-24947?focusedWorklogId=582037&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-582037
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ASF GitHub Bot logged work on HIVE-24947:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 13/Apr/21 20:09
Start Date: 13/Apr/21 20:09
Worklog Time Spent: 10m
Work Description: pgaref opened a new pull request #2176:
URL: https://github.com/apache/hive/pull/2176
### What changes were proposed in this pull request?
Make sure Parquet values are decoded on the fly are each Page can decide to
encode values or not.
As a result we might end up with a VRB where half the values are encoded and
the rest are not!
### Does this PR introduce _any_ user-facing change?
NO
### How was this patch tested?
TODO -- add q.test
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Issue Time Tracking
-------------------
Worklog Id: (was: 582037)
Remaining Estimate: 0h
Time Spent: 10m
> Casting exception when reading vectorized parquet file for insert into
> ----------------------------------------------------------------------
>
> Key: HIVE-24947
> URL: https://issues.apache.org/jira/browse/HIVE-24947
> Project: Hive
> Issue Type: Bug
> Affects Versions: 4.0.0
> Reporter: Marton Bod
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> We have two parquet tables (target and source).
> Upon running the query:
> {code:java}
> set hive.vectorized.execution.enabled=true;
> insert into target2 partition(part_col_1, part_col_2) select * from
> source;{code}
> The following exception is thrown:
> {code:java}
> Caused by: java.lang.ClassCastException: java.lang.Integer cannot be cast to
> [B
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedListColumnReader.fillColumnVector(VectorizedListColumnReader.java:308)
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedListColumnReader.convertValueListToListColumnVector(VectorizedListColumnReader.java:342)
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedListColumnReader.readBatch(VectorizedListColumnReader.java:91)
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedParquetRecordReader.nextBatch(VectorizedParquetRecordReader.java:433)
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedParquetRecordReader.next(VectorizedParquetRecordReader.java:376)
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedParquetRecordReader.next(VectorizedParquetRecordReader.java:99)
> at
> org.apache.hadoop.hive.ql.io.HiveContextAwareRecordReader.doNext(HiveContextAwareRecordReader.java:365)
> ... 24 more
> {code}
> The same runs without problems when vectorization is turned off.
> cc [~nareshpr]
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