Examples with JOIN_REORDERING_STRATEGY com.facebook.presto.SystemSessionProperties.JOIN_REORDERING_STRATEGY used on opensource projects

Example 1 with JOIN_REORDERING_STRATEGY

use of com.facebook.presto.SystemSessionProperties.JOIN_REORDERING_STRATEGY in project presto by prestodb.

the class TestReorderJoins method testReorderAndReplicate.

@Test
public void testReorderAndReplicate() {
    int aRows = 10;
    int bRows = 10_000;
    PlanNodeStatsEstimate probeSideStatsEstimate = PlanNodeStatsEstimate.builder().setOutputRowCount(aRows).addVariableStatistics(ImmutableMap.of(variable("A1", VARCHAR), new VariableStatsEstimate(0, 100, 0, 640000, 10))).build();
    PlanNodeStatsEstimate buildSideStatsEstimate = PlanNodeStatsEstimate.builder().setOutputRowCount(bRows).addVariableStatistics(ImmutableMap.of(variable("B1", VARCHAR), new VariableStatsEstimate(0, 100, 0, 640000, 10))).build();
    // A table is small enough to be replicated in AUTOMATIC_RESTRICTED mode
    assertReorderJoins().setSystemProperty(JOIN_DISTRIBUTION_TYPE, AUTOMATIC.name()).setSystemProperty(JOIN_REORDERING_STRATEGY, AUTOMATIC.name()).setSystemProperty(JOIN_MAX_BROADCAST_TABLE_SIZE, "10MB").on(p -> {
        VariableReferenceExpression a1 = p.variable("A1", VARCHAR);
        VariableReferenceExpression b1 = p.variable("B1", VARCHAR);
        return p.join(INNER, p.values(new PlanNodeId("valuesA"), aRows, a1), p.values(new PlanNodeId("valuesB"), bRows, b1), ImmutableList.of(new EquiJoinClause(a1, b1)), ImmutableList.of(a1, b1), Optional.empty());
    }).overrideStats("valuesA", probeSideStatsEstimate).overrideStats("valuesB", buildSideStatsEstimate).matches(join(INNER, ImmutableList.of(equiJoinClause("B1", "A1")), Optional.empty(), Optional.of(REPLICATED), values(ImmutableMap.of("B1", 0)), values(ImmutableMap.of("A1", 0))));
}