Maria Basmanova

I'm seeing that some GET requests get silently dropped by the server, e.g. I see the request in WireShark, but HttpSession::onReceivedRequest method doesn't get called. The same exact request retried...

Add Presto functions

48

Velox includes many of the PrestoSQL functions, but a few are still missing. It would great to add these. Function coverage map: https://facebookincubator.github.io/velox/functions/coverage.html A subset of missing functions that would...

Add support for converting MAP and ARRAY types from Velox to Substrait and back

1

See velox/substrait/tests/VeloxToSubstraitTypeTest.cpp ``` // Array type is not supported yet. ASSERT_ANY_THROW(testTypeConversion(ARRAY(BIGINT()))); // Map type is not supported yet. ASSERT_ANY_THROW(testTypeConversion(MAP(BIGINT(), DOUBLE()))); ```

Verify min(date) and max(date) aggregate functions end-to-end

2

Currently, min and max aggregate functions with DATE input types produce DATE intermediate results. We need to double check whether this matches intermediate types expected by the Presto planner and...

[native] Add support for row structs in VALUES clause

2

PR #18274 added support for maps and arrays in VALUES clause. This issue about adding support for structs. ``` select * from (values(1, row(1, 'test'))) as t(a, b); Query 20220906_130852_01826_h2hkx...

Extends CrossJoinNode plan node and CrossJoinProbe operator to support LEFT, RIGHT and FULL OUTER joins without equi-clauses. ``` SELECT * FROM t LEFT JOIN u ON t.a < u.b; SELECT...

CC: @beroyfb @kagamiori

Implement Filter::mergeWith for BytesRange and BytesValue

2

Filter::mergeWith API is used to merge filters pushed down from the join to topN operators into collocated table scan. Currently this API is implemented for numeric types. This task is...

Redesign Exchange protocol to reduce query latency

34

An investigation of a slow exchange-heavy query prompted re-thinking of Exchange protocol used in Presto and Prestissimo. The query under investigation has 10+ count(distinct) which are planned as 10+ stages...

WIP: Add support for DECIMAL types to Expression Fuzzer

3

Differential Revision: D55705440