Examples with MergePhase io.crate.execution.dsl.phases.MergePhase used on opensource projects

Example 6 with MergePhase

use of io.crate.execution.dsl.phases.MergePhase in project crate by crate.

the class GroupByPlannerTest method testNonDistributedGroupByOnClusteredColumn.

@Test
public void testNonDistributedGroupByOnClusteredColumn() throws Exception {
    var e = SQLExecutor.builder(clusterService, 2, RandomizedTest.getRandom(), List.of()).addTable(TableDefinitions.USER_TABLE_DEFINITION).build();
    Merge merge = e.plan("select count(*), id from users group by id limit 20");
    Collect collect = ((Collect) merge.subPlan());
    RoutedCollectPhase collectPhase = ((RoutedCollectPhase) collect.collectPhase());
    assertThat(collectPhase.projections(), contains(instanceOf(GroupProjection.class), instanceOf(TopNProjection.class), // swaps id, count(*) output from group by to count(*), id
    instanceOf(EvalProjection.class)));
    assertThat(collectPhase.projections().get(0).requiredGranularity(), is(RowGranularity.SHARD));
    MergePhase mergePhase = merge.mergePhase();
    assertThat(mergePhase.projections(), contains(instanceOf(TopNProjection.class)));
}

Example 7 with MergePhase

use of io.crate.execution.dsl.phases.MergePhase in project crate by crate.

the class GroupByPlannerTest method testGroupByWithHavingAndNoSelectListReordering.

@Test
public void testGroupByWithHavingAndNoSelectListReordering() throws Exception {
    var e = SQLExecutor.builder(clusterService, 2, RandomizedTest.getRandom(), List.of()).addTable(TableDefinitions.USER_TABLE_DEFINITION).build();
    Merge planNode = e.plan("select name, count(*) from users group by name having count(*) > 1");
    Merge reducerMerge = (Merge) planNode.subPlan();
    MergePhase reduceMergePhase = reducerMerge.mergePhase();
    // group projection
    // outputs: name, count(*)
    // filter projection
    // outputs: name, count(*)
    assertThat(reduceMergePhase.projections(), contains(instanceOf(GroupProjection.class), instanceOf(FilterProjection.class)));
    Projection projection = reduceMergePhase.projections().get(1);
    assertThat(projection, instanceOf(FilterProjection.class));
    FilterProjection filterProjection = (FilterProjection) projection;
    Symbol countArgument = ((Function) filterProjection.query()).arguments().get(0);
    assertThat(countArgument, instanceOf(InputColumn.class));
    // pointing to second output from group projection
    assertThat(((InputColumn) countArgument).index(), is(1));
    // outputs: name, count(*)
    assertThat(((InputColumn) filterProjection.outputs().get(0)).index(), is(0));
    assertThat(((InputColumn) filterProjection.outputs().get(1)).index(), is(1));
    MergePhase localMerge = planNode.mergePhase();
    assertThat(localMerge.projections(), empty());
}

Example 8 with MergePhase

use of io.crate.execution.dsl.phases.MergePhase in project crate by crate.

the class GroupByPlannerTest method testGroupByWithAggregationPlan.

@Test
public void testGroupByWithAggregationPlan() throws Exception {
    var e = SQLExecutor.builder(clusterService, 2, RandomizedTest.getRandom(), List.of()).addTable(TableDefinitions.USER_TABLE_DEFINITION).build();
    Merge distributedGroupByMerge = e.plan("select count(*), name from users group by name");
    Merge reducerMerge = (Merge) distributedGroupByMerge.subPlan();
    // distributed collect
    RoutedCollectPhase collectPhase = ((RoutedCollectPhase) ((Collect) reducerMerge.subPlan()).collectPhase());
    assertThat(collectPhase.maxRowGranularity(), is(RowGranularity.DOC));
    assertThat(collectPhase.nodeIds().size(), is(2));
    assertThat(collectPhase.toCollect().size(), is(1));
    assertThat(collectPhase.projections().size(), is(1));
    assertThat(collectPhase.projections().get(0), instanceOf(GroupProjection.class));
    assertThat(collectPhase.outputTypes().size(), is(2));
    assertEquals(DataTypes.STRING, collectPhase.outputTypes().get(0));
    assertEquals(CountAggregation.LongStateType.INSTANCE, collectPhase.outputTypes().get(1));
    MergePhase mergePhase = reducerMerge.mergePhase();
    assertThat(mergePhase.numUpstreams(), is(2));
    assertThat(mergePhase.nodeIds().size(), is(2));
    assertEquals(mergePhase.inputTypes(), collectPhase.outputTypes());
    // for function evaluation and column-reordering there is always a EvalProjection
    assertThat(mergePhase.projections().size(), is(2));
    assertThat(mergePhase.projections().get(1), instanceOf(EvalProjection.class));
    assertThat(mergePhase.projections().get(0), instanceOf(GroupProjection.class));
    GroupProjection groupProjection = (GroupProjection) mergePhase.projections().get(0);
    InputColumn inputColumn = (InputColumn) groupProjection.values().get(0).inputs().get(0);
    assertThat(inputColumn.index(), is(1));
    assertThat(mergePhase.outputTypes().size(), is(2));
    assertEquals(DataTypes.LONG, mergePhase.outputTypes().get(0));
    assertEquals(DataTypes.STRING, mergePhase.outputTypes().get(1));
    MergePhase localMerge = distributedGroupByMerge.mergePhase();
    assertThat(localMerge.numUpstreams(), is(2));
    assertThat(localMerge.nodeIds().size(), is(1));
    assertThat(localMerge.nodeIds().iterator().next(), is(NODE_ID));
    assertEquals(mergePhase.outputTypes(), localMerge.inputTypes());
    assertThat(localMerge.projections(), empty());
}

Example 9 with MergePhase

use of io.crate.execution.dsl.phases.MergePhase in project crate by crate.

the class GroupByPlannerTest method testGroupByHavingAndNoSelectListReOrderingWithLimit.

@Test
public void testGroupByHavingAndNoSelectListReOrderingWithLimit() throws Exception {
    var e = SQLExecutor.builder(clusterService, 2, RandomizedTest.getRandom(), List.of()).addTable(TableDefinitions.USER_TABLE_DEFINITION).build();
    Merge planNode = e.plan("select name, count(*) from users group by name having count(*) > 1 limit 100");
    Merge reducerMerge = (Merge) planNode.subPlan();
    MergePhase reducePhase = reducerMerge.mergePhase();
    // group projection
    // outputs: name, count(*)
    // filter projection
    // outputs: name, count(*)
    // topN projection
    // outputs: name, count(*)
    Projection projection = reducePhase.projections().get(1);
    assertThat(projection, instanceOf(FilterProjection.class));
    FilterProjection filterProjection = (FilterProjection) projection;
    Symbol countArgument = ((Function) filterProjection.query()).arguments().get(0);
    assertThat(countArgument, instanceOf(InputColumn.class));
    // pointing to second output from group projection
    assertThat(((InputColumn) countArgument).index(), is(1));
    // outputs: name, count(*)
    assertThat(((InputColumn) filterProjection.outputs().get(0)).index(), is(0));
    assertThat(((InputColumn) filterProjection.outputs().get(1)).index(), is(1));
    // outputs: name, count(*)
    TopNProjection topN = (TopNProjection) reducePhase.projections().get(2);
    assertThat(((InputColumn) topN.outputs().get(0)).index(), is(0));
    assertThat(((InputColumn) topN.outputs().get(1)).index(), is(1));
    MergePhase localMerge = planNode.mergePhase();
    // topN projection
    // outputs: name, count(*)
    topN = (TopNProjection) localMerge.projections().get(0);
    assertThat(((InputColumn) topN.outputs().get(0)).index(), is(0));
    assertThat(((InputColumn) topN.outputs().get(1)).index(), is(1));
}

Example 10 with MergePhase

use of io.crate.execution.dsl.phases.MergePhase in project crate by crate.

the class GroupByPlannerTest method testNonDistributedGroupByOnClusteredColumnSortedScalar.

@Test
public void testNonDistributedGroupByOnClusteredColumnSortedScalar() throws Exception {
    var e = SQLExecutor.builder(clusterService, 2, RandomizedTest.getRandom(), List.of()).addTable(TableDefinitions.USER_TABLE_DEFINITION).build();
    Merge merge = e.plan("select count(*) + 1, id from users group by id order by count(*) + 1 limit 20");
    Collect collect = (Collect) merge.subPlan();
    RoutedCollectPhase collectPhase = ((RoutedCollectPhase) collect.collectPhase());
    assertThat(collectPhase.projections(), contains(instanceOf(GroupProjection.class), instanceOf(OrderedTopNProjection.class), instanceOf(EvalProjection.class)));
    assertThat(((OrderedTopNProjection) collectPhase.projections().get(1)).orderBy().size(), is(1));
    assertThat(collectPhase.projections().get(0).requiredGranularity(), is(RowGranularity.SHARD));
    MergePhase mergePhase = merge.mergePhase();
    assertThat(mergePhase.projections(), contains(instanceOf(TopNProjection.class)));
    PositionalOrderBy positionalOrderBy = mergePhase.orderByPositions();
    assertThat(positionalOrderBy, notNullValue());
    assertThat(positionalOrderBy.indices().length, is(1));
    assertThat(positionalOrderBy.indices()[0], is(0));
    assertThat(positionalOrderBy.reverseFlags()[0], is(false));
    assertThat(positionalOrderBy.nullsFirst()[0], is(false));
}