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https://reviews.apache.org/r/32499/
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Review request for hive.
Bugs: HIVE-10086
https://issues.apache.org/jira/browse/HIVE-10086
Repository: hive-git
Description
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Attached is the patch that handles schema that do not match between Parquet and
Hive.
The access to Parquet data is with name matching in this case. The table column
may have different schema order, but if the name matches the parquet column
name, then the value is retrieved.
Also, if the Hive schema has columns and struct elements that do not match with
the Parquet schema, then it will return NULL values instead.
Diffs
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ql/src/java/org/apache/hadoop/hive/ql/io/parquet/read/DataWritableReadSupport.java
57ae7a9740d55b407cadfc8bc030593b29f90700
ql/src/test/queries/clientpositive/parquet_schema_evolution.q PRE-CREATION
ql/src/test/queries/clientpositive/parquet_table_with_subschema.q
PRE-CREATION
ql/src/test/results/clientpositive/parquet_schema_evolution.q.out
PRE-CREATION
ql/src/test/results/clientpositive/parquet_table_with_subschema.q.out
PRE-CREATION
Diff: https://reviews.apache.org/r/32499/diff/
Testing
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Thanks,
Sergio Pena
