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Posted to commits@druid.apache.org by "kgyrtkirk (via GitHub)" <gi...@apache.org> on 2023/11/09 12:39:15 UTC

[I] Not able to set literal arguments for sketch functions processing subquery results (druid)

kgyrtkirk opened a new issue, #15353:
URL: https://github.com/apache/druid/issues/15353

   Sketch aggregator creation fails; because the argument doesn't [look like a literal](https://github.com/apache/druid/blob/895e53555cf69cce992ee54d8523624fe1150214/extensions-core/datasketches/src/main/java/org/apache/druid/query/aggregation/datasketches/hll/sql/HllSketchBaseSqlAggregator.java#L90)
   
   queries like `DS_HLL(dim2, 18)` may fail; however `DS_HLL(dim2)` could still be used (but it will use defaults)
   
   ### Affected Version
   
   current master for sure...possibly introduced earlier; will update the ticket
   
   ### Description
   
   
   the query plan has an inputref instead of a literal:
   ```
   LogicalAggregate(group=[{0, 1}], val=[APPROX_COUNT_DISTINCT_DS_HLL($1, $2)]): rowcount = 1.0, cumulative cost = {217.125 rows, 673.6669492803463 cpu, 0.0 io}, id = 157
     LogicalProject(d1=[$0], dim2=[$2], $f2=[18]): rowcount = 3.0, cumulative cost = {216.0 rows, 673.6669492803463 cpu, 0.0 io}, id = 155
       LogicalSort(sort0=[$1], dir0=[ASC], fetch=[3]): rowcount = 3.0, cumulative cost = {213.0 rows, 664.6669492803463 cpu, 0.0 io}, id = 153
         LogicalAggregate(group=[{0, 1, 2}]): rowcount = 10.0, cumulative cost = {210.0 rows, 401.0 cpu, 0.0 io}, id = 151
           LogicalProject(d1=[$7], dim1=[$1], dim2=[$2]): rowcount = 100.0, cumulative cost = {200.0 rows, 401.0 cpu, 0.0 io}, id = 149
             LogicalTableScan(table=[[druid, foo]]): rowcount = 100.0, cumulative cost = {100.0 rows, 101.0 cpu, 0.0 io}, id = 125
   ```
   
   testcase for `HllSketchSqlAggregatorTest`:
   ```
     @Test
     public void testDsHllGroupingWithWindow()
     {
       testBuilder()
           .queryContext(ImmutableMap.of(QueryContexts.ENABLE_DEBUG, true))
           .sql(
               "SELECT d1,dim2,APPROX_COUNT_DISTINCT_DS_HLL(dim2, 18) as val"
                   + " FROM (select d1,dim1,dim2 from druid.foo group by d1,dim1,dim2 order by dim1 limit 3) t "
                   + " group by 1,2"
           )
           .run();
     }
   ```
   


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Re: [I] Not able to set literal arguments for sketch functions processing subquery results (druid)

Posted by "soumyava (via GitHub)" <gi...@apache.org>.
soumyava closed issue #15353: Not able to set literal arguments for sketch functions processing subquery results
URL: https://github.com/apache/druid/issues/15353


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