Navis Ryu issues

Results 203 issues of


                                            Navis Ryu

Propagate filter selectivity to outer queries

@engine

Introduce sampling query for determining selectivity of having filter

currently it's regarded 0.5. but there is some extreme cases, like tpch-18.

@engine

@engine-sql

Reintroduce heuristic join reordering

Some improvement in plan (tpch-7, etc.)

@engine-sql

Trivial bug fixes

@engine

Move filter pushdown rules from volcano to hep program

@engine-sql

Split cost and row count from calcite cost model

@engine-sql

Use fieldNames instead of fields if possible for count distinct

@engine-sql

Support finalizing combiner in broker

can be used for some optimization

@engine

Provide logical plan of sql with explain

@engine-sql

Fix sporadic failure getting signature of queryable index

``` at Caused by: java.lang.NullPointerException: cannot find column ^@^@^@^OL_EXTENDE at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:975) at io.druid.segment.SimpleQueryableIndex.asSignature(SimpleQueryableIndex.java:273) at io.druid.segment.QueryableIndexStorageAdapter.asSignature(QueryableIndexStorageAdapter.java:255) at io.druid.query.RowResolver.of(RowResolver.java:67) at io.druid.segment.CursorFactory.makeCursors(CursorFactory.java:44) at io.druid.query.QueryRunnerHelper.makeCursorBasedQueryConcat(QueryRunnerHelper.java:66) at io.druid.query.timeseries.TimeseriesQueryEngine.process(TimeseriesQueryEngine.java:66) at io.druid.query.timeseries.TimeseriesQueryRunnerFactory$TimeseriesQueryRunner.run(TimeseriesQueryRunnerFactory.java:88) at io.druid.query.QueryRunnerFactory.lambda$createRunner$0(QueryRunnerFactory.java:65) at io.druid.query.ReferenceCountingSegmentQueryRunner.run(ReferenceCountingSegmentQueryRunner.java:61) at...

bug

@engine