Rong Rong
Rong Rong
Currently, if a query is run with the ORDER BY clause. data is - in selection only, data is sorted and trimmed to the limit - in aggregation/group-by/distinct, data is...
We've received many feedback from multi-stage engine beta test. This issue tracks all the reported and fixed performance and stability issues - [x] create test framework for exact query result...
Pinot currently has a multi-value column type: which essentially is a ordered, bag-of-elements, set data structure. However, many requirement comes in to ask for proper array support (see https://github.com/apache/pinot/issues/6083) This...
Support ORDER BY in intermediate stage. Similar to AGG operator without GROUP BY, this ORDER BY implementation only supported a final stage, single-server reduce logic. TODOs - introduce multi-stage order-by...
Add support for HAVING clause for basic operators (`=`. `!=`, `=`) - adding FilterNode for intermediate stage - adding FilterOperator and operands since predicates are not actually functions. TODO: since...
support printing out plan visualization in dot writer format (for GraphViz tools) now we support ``` EXPLAIN PLAN [ INCLUDING [ ALL ] ATTRIBUTES ] [ AS JSON | AS...
Many SQL features are not yet supported in multistage engine, because one of the two followings: - stage plan node in pinot-query-planner hasn't been implemented yet. - operator in pinot-query-runtime...
Currently `select * from tbl limit 10` returns a unimplemented exception because limit is considered as an `Order By` with `fetch top 10`. since we do not order with limit...
https://github.com/apache/pinot/pull/9171 added support for query cancelation This is a bit more complex in multi-stage engine as there are multiple stage in various distributed machines. This issue tracks the effort to...