Karen Coppage created HIVE-22330:
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Summary: Maximize smallBuffer usage in BytesColumnVector
Key: HIVE-22330
URL: https://issues.apache.org/jira/browse/HIVE-22330
Project: Hive
Issue Type: Improvement
Affects Versions: 4.0.0
Reporter: Karen Coppage
Assignee: Karen Coppage
When BytesColumnVector is populated with values, it either creates a new
(byte[]) buffer object to help take the values, but if the values array is
<=1MB, then instead of creating a new buffer it reuses a single "smallBuffer".
Every time the smallBuffer is too small for the data we want to store there,
the size is doubled; when the size ends up larger than 1 GB (or
Integer.MAX_VALUE / 2) then the next time we try to double the size, overflow
occurs and an error is thrown.
A quick fix here is to set the smallBuffer size to Integer.MAX_VALUE in this
case.
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