Alagappan Maruthappan created HIVE-27437:
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Summary: Vectorization: VectorizedOrcRecordReader does not reset
VectorizedRowBatch after processing
Key: HIVE-27437
URL: https://issues.apache.org/jira/browse/HIVE-27437
Project: Hive
Issue Type: Task
Reporter: Alagappan Maruthappan
Assignee: Alagappan Maruthappan
There seems to be a memory leak in VectorizedOrcRecordReader. When
MapColumnVector or ListColumnVector is used and the VectorizedRowBatch is not
reset after every read, the vector keeps growing and spending a lot of time
assigning memory.
The reset happens in VectorizedParquetRecordReader -
https://github.com/apache/hive/blob/f78ca5df80c0bcb566f0915cda65112268df492c/ql/src/java/org/apache/hadoop/hive/ql/io/parquet/vector/VectorizedParquetRecordReader.java#L400
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