Alexander Ocsa created ARROW-14202:
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Summary: A more RAM-efficient top-k sink node
Key: ARROW-14202
URL: https://issues.apache.org/jira/browse/ARROW-14202
Project: Apache Arrow
Issue Type: Improvement
Components: C++
Affects Versions: 7.0.0
Reporter: Alexander Ocsa
Mentioned here:
https://github.com/apache/arrow/pull/11274#pullrequestreview-768267959
For example, a top-k implementation could periodically (when batches_ has some
configurable # of rows) run through and discard data. The way it is written now
it would still require me to buffer the entire dataset in memory (and/or
spillover).
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