- Nominating Ying Su as new committer
Re: Nominating Ying Su as new committer
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Date: Wednesday, December 23, 2020 at 3:10 PM
To: rongrong100@... <rongrong100@...>
Cc: presto-tsc@... <presto-tsc@...>
Subject: Re: [presto-tsc] Nominating Ying Su as new committer
On Wed, Dec 23, 2020 at 11:32 AM <rongrong100@...
Dear TSC members,
I would like to nominate Ying Su as a committer. Ying has been working on Presto for almost 3 years. She had contributed 200 commits with 20K+ lines of code.
She primarily worked on execution and performance optimization. Some of her highlights are:
Optimize repartition, which brought 2-3x CPU reduction on PartitionedOutputOperator (Blog Post) and 6x memory reduction.
Optimize Unnest, which brought up to 20x CPU reduction on UnnestOperator in Facebook workload (Blog Post)
Scan optimizations that brought additional 3 -17% efficiency through vectorization and batch processing on top of Aria Scan optimizations.
Many performance improvements in projection, map / array functions, etc.
Many memory / GC fixes, etc
In addition to her contribution, she also provided valuable feedbacks on others’ work related to execution / performance improvements. I think it’s safe to say that Presto would not be as good without her contributions.
Per the TSC charter "A Contributor may become a Committer by a majority approval of the existing Committers.", therefore, each TSC member has one vote to cast. Please reply with +1/-1 if you approve/disapprove onboarding Ying
as a committer.
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