Jacques Nadeau created ARROW-801:
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Summary: [JAVA] Provide direct access to underlying buffer memory
addresses in consistent way without generating garbage or large amount
indirections
Key: ARROW-801
URL: https://issues.apache.org/jira/browse/ARROW-801
Project: Apache Arrow
Issue Type: Bug
Components: Java - Vectors
Reporter: Jacques Nadeau
When working with Arrow vectors recently, we observed a situation where our
time was dominated by calls to getFieldBuffers() to be able to retrieve memory
addresses (22s out of 26s total for a piece of code). We should provide a
direct mechanism to access this data so we can avoid all the extra indirection
and object creation.
A proposal:
getBitAddress();
getDataAddress();
getOffsetAddress();
These interfaces would be made available at the FieldVector interface and
simply throw UnsupportedOperationException where not supported.
Unsupported Operations:
data for list type
offset for fixed width types
data and offset for struct type
data for union type
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