Or Ozeri created PARQUET-1704:
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Summary: [C++] Add re-usable encryption buffer to
SerializedPageWriter
Key: PARQUET-1704
URL: https://issues.apache.org/jira/browse/PARQUET-1704
Project: Parquet
Issue Type: Improvement
Components: parquet-cpp
Reporter: Or Ozeri
Attachments: profiler.png
SerializedPageWriter currently allocates a one-time buffer for each page
encrypted.
We add a re-usable buffer to avoid the allocation and free overhead of these
buffers.
This optimization already exists when decrypting (in SerializedPageReader).
Testing this optimization we found that it improves running time performance by
~15% (when encryption is on).
See attached screenshot of a profiler analysis, showing the overhead of
re-allocating and freeing the buffer.
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