Owen O'Malley created HIVE-9451:
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Summary: Add max size of column dictionaries to ORC metadata
Key: HIVE-9451
URL: https://issues.apache.org/jira/browse/HIVE-9451
Project: Hive
Issue Type: Improvement
Reporter: Owen O'Malley
To predict the amount of memory required to read an ORC file we need to know
the size of the dictionaries for the columns that we are reading. I propose
adding the number of bytes for each column's dictionary to the stripe's column
statistics. The file's column statistics would have the maximum dictionary size
for each column.
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