Examples with PlanCostEstimate com.facebook.presto.cost.PlanCostEstimate used on opensource projects

Example 1 with PlanCostEstimate

use of com.facebook.presto.cost.PlanCostEstimate in project presto by prestodb.

the class TestMemo method testEvictCostOnReplace.

@Test
public void testEvictCostOnReplace() {
    PlanNode y = node();
    PlanNode x = node(y);
    Memo memo = new Memo(idAllocator, x);
    int xGroup = memo.getRootGroup();
    int yGroup = getChildGroup(memo, memo.getRootGroup());
    PlanCostEstimate yCost = new PlanCostEstimate(42, 0, 0, 0);
    PlanCostEstimate xCost = new PlanCostEstimate(42, 0, 0, 37);
    memo.storeCost(yGroup, yCost);
    memo.storeCost(xGroup, xCost);
    assertEquals(memo.getCost(yGroup), Optional.of(yCost));
    assertEquals(memo.getCost(xGroup), Optional.of(xCost));
    memo.replace(yGroup, node(), "rule");
    assertEquals(memo.getCost(yGroup), Optional.empty());
    assertEquals(memo.getCost(xGroup), Optional.empty());
}

Example 2 with PlanCostEstimate

use of com.facebook.presto.cost.PlanCostEstimate in project presto by prestodb.

the class TextRenderer method printEstimates.

private String printEstimates(PlanRepresentation plan, NodeRepresentation node) {
    if (node.getEstimatedStats().stream().allMatch(PlanNodeStatsEstimate::isOutputRowCountUnknown) && node.getEstimatedCost().stream().allMatch(c -> c.equals(PlanCostEstimate.unknown()))) {
        return "";
    }
    StringBuilder output = new StringBuilder();
    int estimateCount = node.getEstimatedStats().size();
    output.append("Estimates: ");
    for (int i = 0; i < estimateCount; i++) {
        PlanNodeStatsEstimate stats = node.getEstimatedStats().get(i);
        PlanCostEstimate cost = node.getEstimatedCost().get(i);
        output.append(format("{rows: %s (%s), cpu: %s, memory: %s, network: %s}", formatAsLong(stats.getOutputRowCount()), formatEstimateAsDataSize(stats.getOutputSizeInBytes(node.getOutputs())), formatDouble(cost.getCpuCost()), formatDouble(cost.getMaxMemory()), formatDouble(cost.getNetworkCost())));
        if (i < estimateCount - 1) {
            output.append("/");
        }
    }
    output.append("\n");
    return output.toString();
}