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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.clustercontroller.core;
import com.yahoo.vdslib.state.NodeType;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import java.util.HashSet;
import static org.junit.jupiter.api.Assertions.assertFalse;
@ExtendWith(CleanupZookeeperLogsOnSuccess.class)
public class GroupAutoTakedownLiveConfigTest extends FleetControllerTest {
private final Timer timer = new FakeTimer();
private static FleetControllerOptions.Builder createOptions(DistributionBuilder.GroupBuilder groupBuilder, double minNodeRatio) {
return defaultOptions()
.setStorageDistribution(DistributionBuilder.forHierarchicCluster(groupBuilder))
.setNodes(new HashSet<>(DistributionBuilder.buildConfiguredNodes(groupBuilder.totalNodeCount())))
.setMinNodeRatioPerGroup(minNodeRatio)
.setMaxTransitionTime(NodeType.DISTRIBUTOR, 0)
.setMaxTransitionTime(NodeType.STORAGE, 0);
}
private void updateConfigLive(FleetControllerOptions newOptions) {
fleetController().updateOptions(newOptions);
}
private void reconfigureWithMinNodeRatio(FleetControllerOptions options, double minNodeRatio) {
FleetControllerOptions.Builder newOptions = FleetControllerOptions.Builder.copy(options);
newOptions.setMinNodeRatioPerGroup(minNodeRatio);
updateConfigLive(newOptions.build());
}
private void reconfigureWithDistribution(FleetControllerOptions options, DistributionBuilder.GroupBuilder groupBuilder) {
FleetControllerOptions.Builder builder =
FleetControllerOptions.Builder.copy(options)
.setNodes(new HashSet<>(DistributionBuilder.buildConfiguredNodes(groupBuilder.totalNodeCount())))
.setStorageDistribution(DistributionBuilder.forHierarchicCluster(groupBuilder));
updateConfigLive(builder.build());
}
private FleetControllerOptions setUp3x3ClusterWithMinNodeRatio(double minNodeRatio) throws Exception {
FleetControllerOptions.Builder options = createOptions(DistributionBuilder.withGroups(3).eachWithNodeCount(3), minNodeRatio);
setUpFleetController(timer, options);
setUpVdsNodes(timer, false, 9);
waitForState("version:\\d+ distributor:9 storage:9");
return options.build();
}
private void takeDownContentNode(int index) {
// nodes list contains both distributors and storage nodes, with distributors
// in even positions and storage nodes in odd positions.
final int arrayIndex = index*2 + 1;
assertFalse(nodes.get(arrayIndex).isDistributor());
nodes.get(arrayIndex).disconnect();
}
@Test
void bootstrap_min_ratio_option_is_propagated_to_group_availability_logic() throws Exception {
setUp3x3ClusterWithMinNodeRatio(0.67);
takeDownContentNode(0);
waitForStateExcludingNodeSubset("version:\\d+ distributor:9 storage:9 .0.s:d .1.s:d .2.s:d", asIntSet(0), timer);
}
@Test
void min_ratio_live_reconfig_immediately_takes_effect() throws Exception {
// Initially, arbitrarily many nodes may be down in a group.
var options = setUp3x3ClusterWithMinNodeRatio(0.0);
takeDownContentNode(3);
waitForStateExcludingNodeSubset("version:\\d+ distributor:9 storage:9 .3.s:d", asIntSet(3), timer);
reconfigureWithMinNodeRatio(options, 0.67);
waitForStateExcludingNodeSubset("version:\\d+ distributor:9 storage:9 .3.s:d .4.s:d .5.s:d", asIntSet(3), timer);
reconfigureWithMinNodeRatio(options, 0.0);
// Aaaand back up again!
waitForStateExcludingNodeSubset("version:\\d+ distributor:9 storage:9 .3.s:d", asIntSet(3), timer);
}
@Test
void live_distribution_config_changes_trigger_cluster_state_change() throws Exception {
var options = setUp3x3ClusterWithMinNodeRatio(0.65);
takeDownContentNode(6);
// Not enough nodes down to trigger group take-down yet
waitForStateExcludingNodeSubset("version:\\d+ distributor:9 storage:9 .6.s:d", asIntSet(6), timer);
// Removing a node from the same group as node 6 will dip it under the configured threshold,
// taking down the entire group. In this case we configure out node 8.
reconfigureWithDistribution(options, DistributionBuilder.withGroupNodes(3, 3, 2));
waitForStateExcludingNodeSubset("version:\\d+ distributor:8 storage:6", asIntSet(6, 8), timer);
}
}
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