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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.cluster.routing.allocation.decider;
import org.elasticsearch.Version;
import org.elasticsearch.cluster.ClusterInfo;
import org.elasticsearch.cluster.ClusterInfoService;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.DiskUsage;
import org.elasticsearch.cluster.EmptyClusterInfoService;
import org.elasticsearch.cluster.MockInternalClusterInfoService.DevNullClusterInfo;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.cluster.node.DiscoveryNodes;
import org.elasticsearch.cluster.routing.RoutingNode;
import org.elasticsearch.cluster.routing.RoutingTable;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.cluster.routing.ShardRoutingHelper;
import org.elasticsearch.cluster.routing.UnassignedInfo;
import org.elasticsearch.cluster.routing.allocation.RoutingAllocation;
import org.elasticsearch.common.collect.ImmutableOpenMap;
import org.elasticsearch.common.settings.ClusterSettings;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.DummyTransportAddress;
import org.elasticsearch.common.transport.LocalTransportAddress;
import org.elasticsearch.common.unit.ByteSizeValue;
import org.elasticsearch.test.ESTestCase;
import java.util.Arrays;
import static org.hamcrest.CoreMatchers.equalTo;
/**
* Unit tests for the DiskThresholdDecider
*/
public class DiskThresholdDeciderUnitTests extends ESTestCase {
public void testDynamicSettings() {
ClusterSettings nss = new ClusterSettings(Settings.EMPTY, ClusterSettings.BUILT_IN_CLUSTER_SETTINGS);
ClusterInfoService cis = EmptyClusterInfoService.INSTANCE;
DiskThresholdDecider decider = new DiskThresholdDecider(Settings.EMPTY, nss, cis, null);
assertThat(decider.getFreeBytesThresholdHigh(), equalTo(ByteSizeValue.parseBytesSizeValue("0b", "test")));
assertThat(decider.getFreeDiskThresholdHigh(), equalTo(10.0d));
assertThat(decider.getFreeBytesThresholdLow(), equalTo(ByteSizeValue.parseBytesSizeValue("0b", "test")));
assertThat(decider.getFreeDiskThresholdLow(), equalTo(15.0d));
assertThat(decider.getUsedDiskThresholdLow(), equalTo(85.0d));
assertThat(decider.getRerouteInterval().seconds(), equalTo(60L));
assertTrue(decider.isEnabled());
assertTrue(decider.isIncludeRelocations());
Settings newSettings = Settings.builder()
.put(DiskThresholdDecider.CLUSTER_ROUTING_ALLOCATION_DISK_THRESHOLD_ENABLED_SETTING.getKey(), false)
.put(DiskThresholdDecider.CLUSTER_ROUTING_ALLOCATION_INCLUDE_RELOCATIONS_SETTING.getKey(), false)
.put(DiskThresholdDecider.CLUSTER_ROUTING_ALLOCATION_HIGH_DISK_WATERMARK_SETTING.getKey(), "70%")
.put(DiskThresholdDecider.CLUSTER_ROUTING_ALLOCATION_LOW_DISK_WATERMARK_SETTING.getKey(), "500mb")
.put(DiskThresholdDecider.CLUSTER_ROUTING_ALLOCATION_REROUTE_INTERVAL_SETTING.getKey(), "30s")
.build();
nss.applySettings(newSettings);
assertThat("high threshold bytes should be unset",
decider.getFreeBytesThresholdHigh(), equalTo(ByteSizeValue.parseBytesSizeValue("0b", "test")));
assertThat("high threshold percentage should be changed",
decider.getFreeDiskThresholdHigh(), equalTo(30.0d));
assertThat("low threshold bytes should be set to 500mb",
decider.getFreeBytesThresholdLow(), equalTo(ByteSizeValue.parseBytesSizeValue("500mb", "test")));
assertThat("low threshold bytes should be unset",
decider.getFreeDiskThresholdLow(), equalTo(0.0d));
assertThat("reroute interval should be changed to 30 seconds",
decider.getRerouteInterval().seconds(), equalTo(30L));
assertFalse("disk threshold decider should now be disabled", decider.isEnabled());
assertFalse("relocations should now be disabled", decider.isIncludeRelocations());
}
public void testCanAllocateUsesMaxAvailableSpace() {
ClusterSettings nss = new ClusterSettings(Settings.EMPTY, ClusterSettings.BUILT_IN_CLUSTER_SETTINGS);
ClusterInfoService cis = EmptyClusterInfoService.INSTANCE;
DiskThresholdDecider decider = new DiskThresholdDecider(Settings.EMPTY, nss, cis, null);
ShardRouting test_0 = ShardRouting.newUnassigned("test", 0, null, true, new UnassignedInfo(UnassignedInfo.Reason.INDEX_CREATED, "foo"));
DiscoveryNode node_0 = new DiscoveryNode("node_0", DummyTransportAddress.INSTANCE, Version.CURRENT);
DiscoveryNode node_1 = new DiscoveryNode("node_1", DummyTransportAddress.INSTANCE, Version.CURRENT);
MetaData metaData = MetaData.builder()
.put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(1))
.build();
RoutingTable routingTable = RoutingTable.builder()
.addAsNew(metaData.index("test"))
.build();
ClusterState clusterState = ClusterState.builder(org.elasticsearch.cluster.ClusterName.DEFAULT).metaData(metaData).routingTable(routingTable).build();
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder()
.put(node_0)
.put(node_1)
).build();
// actual test -- after all that bloat :)
ImmutableOpenMap.Builder<String, DiskUsage> leastAvailableUsages = ImmutableOpenMap.builder();
leastAvailableUsages.put("node_0", new DiskUsage("node_0", "node_0", "_na_", 100, 0)); // all full
leastAvailableUsages.put("node_1", new DiskUsage("node_1", "node_1", "_na_", 100, 0)); // all full
ImmutableOpenMap.Builder<String, DiskUsage> mostAvailableUsage = ImmutableOpenMap.builder();
mostAvailableUsage.put("node_0", new DiskUsage("node_0", "node_0", "_na_", 100, randomIntBetween(20, 100))); // 20 - 99 percent since after allocation there must be at least 10% left and shard is 10byte
mostAvailableUsage.put("node_1", new DiskUsage("node_1", "node_1", "_na_", 100, randomIntBetween(0, 10))); // this is weird and smells like a bug! it should be up to 20%?
ImmutableOpenMap.Builder<String, Long> shardSizes = ImmutableOpenMap.builder();
shardSizes.put("[test][0][p]", 10L); // 10 bytes
final ClusterInfo clusterInfo = new ClusterInfo(leastAvailableUsages.build(), mostAvailableUsage.build(), shardSizes.build(), ImmutableOpenMap.of());
RoutingAllocation allocation = new RoutingAllocation(new AllocationDeciders(Settings.EMPTY, new AllocationDecider[]{decider}), clusterState.getRoutingNodes(), clusterState.nodes(), clusterInfo, System.nanoTime());
assertEquals(mostAvailableUsage.toString(), Decision.YES, decider.canAllocate(test_0, new RoutingNode("node_0", node_0), allocation));
assertEquals(mostAvailableUsage.toString(), Decision.NO, decider.canAllocate(test_0, new RoutingNode("node_1", node_1), allocation));
}
public void testCanRemainUsesLeastAvailableSpace() {
ClusterSettings nss = new ClusterSettings(Settings.EMPTY, ClusterSettings.BUILT_IN_CLUSTER_SETTINGS);
ClusterInfoService cis = EmptyClusterInfoService.INSTANCE;
DiskThresholdDecider decider = new DiskThresholdDecider(Settings.EMPTY, nss, cis, null);
ImmutableOpenMap.Builder<ShardRouting, String> shardRoutingMap = ImmutableOpenMap.builder();
DiscoveryNode node_0 = new DiscoveryNode("node_0", DummyTransportAddress.INSTANCE, Version.CURRENT);
DiscoveryNode node_1 = new DiscoveryNode("node_1", DummyTransportAddress.INSTANCE, Version.CURRENT);
ShardRouting test_0 = ShardRouting.newUnassigned("test", 0, null, true, new UnassignedInfo(UnassignedInfo.Reason.INDEX_CREATED, "foo"));
ShardRoutingHelper.initialize(test_0, node_0.getId());
ShardRoutingHelper.moveToStarted(test_0);
shardRoutingMap.put(test_0, "/node0/least");
ShardRouting test_1 = ShardRouting.newUnassigned("test", 1, null, true, new UnassignedInfo(UnassignedInfo.Reason.INDEX_CREATED, "foo"));
ShardRoutingHelper.initialize(test_1, node_1.getId());
ShardRoutingHelper.moveToStarted(test_1);
shardRoutingMap.put(test_1, "/node1/least");
ShardRouting test_2 = ShardRouting.newUnassigned("test", 2, null, true, new UnassignedInfo(UnassignedInfo.Reason.INDEX_CREATED, "foo"));
ShardRoutingHelper.initialize(test_2, node_1.getId());
ShardRoutingHelper.moveToStarted(test_2);
shardRoutingMap.put(test_2, "/node1/most");
ShardRouting test_3 = ShardRouting.newUnassigned("test", 3, null, true, new UnassignedInfo(UnassignedInfo.Reason.INDEX_CREATED, "foo"));
ShardRoutingHelper.initialize(test_3, node_1.getId());
ShardRoutingHelper.moveToStarted(test_3);
// Intentionally not in the shardRoutingMap. We want to test what happens when we don't know where it is.
MetaData metaData = MetaData.builder()
.put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(1).numberOfReplicas(1))
.build();
RoutingTable routingTable = RoutingTable.builder()
.addAsNew(metaData.index("test"))
.build();
ClusterState clusterState = ClusterState.builder(org.elasticsearch.cluster.ClusterName.DEFAULT).metaData(metaData).routingTable(routingTable).build();
logger.info("--> adding two nodes");
clusterState = ClusterState.builder(clusterState).nodes(DiscoveryNodes.builder()
.put(node_0)
.put(node_1)
).build();
// actual test -- after all that bloat :)
ImmutableOpenMap.Builder<String, DiskUsage> leastAvailableUsages = ImmutableOpenMap.builder();
leastAvailableUsages.put("node_0", new DiskUsage("node_0", "node_0", "/node0/least", 100, 10)); // 90% used
leastAvailableUsages.put("node_1", new DiskUsage("node_1", "node_1", "/node1/least", 100, 9)); // 91% used
ImmutableOpenMap.Builder<String, DiskUsage> mostAvailableUsage = ImmutableOpenMap.builder();
mostAvailableUsage.put("node_0", new DiskUsage("node_0", "node_0", "/node0/most", 100, 90)); // 10% used
mostAvailableUsage.put("node_1", new DiskUsage("node_1", "node_1", "/node1/most", 100, 90)); // 10% used
ImmutableOpenMap.Builder<String, Long> shardSizes = ImmutableOpenMap.builder();
shardSizes.put("[test][0][p]", 10L); // 10 bytes
shardSizes.put("[test][1][p]", 10L);
shardSizes.put("[test][2][p]", 10L);
final ClusterInfo clusterInfo = new ClusterInfo(leastAvailableUsages.build(), mostAvailableUsage.build(), shardSizes.build(), shardRoutingMap.build());
RoutingAllocation allocation = new RoutingAllocation(new AllocationDeciders(Settings.EMPTY, new AllocationDecider[]{decider}), clusterState.getRoutingNodes(), clusterState.nodes(), clusterInfo, System.nanoTime());
assertEquals(Decision.YES, decider.canRemain(test_0, new RoutingNode("node_0", node_0), allocation));
assertEquals(Decision.NO, decider.canRemain(test_1, new RoutingNode("node_1", node_1), allocation));
try {
decider.canRemain(test_0, new RoutingNode("node_1", node_1), allocation);
fail("not allocated on this node");
} catch (IllegalArgumentException ex) {
// not allocated on that node
}
try {
decider.canRemain(test_1, new RoutingNode("node_0", node_0), allocation);
fail("not allocated on this node");
} catch (IllegalArgumentException ex) {
// not allocated on that node
}
assertEquals("can stay since allocated on a different path with enough space", Decision.YES, decider.canRemain(test_2, new RoutingNode("node_1", node_1), allocation));
assertEquals("can stay since we don't have information about this shard", Decision.YES, decider.canRemain(test_2, new RoutingNode("node_1", node_1), allocation));
}
public void testShardSizeAndRelocatingSize() {
ImmutableOpenMap.Builder<String, Long> shardSizes = ImmutableOpenMap.builder();
shardSizes.put("[test][0][r]", 10L);
shardSizes.put("[test][1][r]", 100L);
shardSizes.put("[test][2][r]", 1000L);
shardSizes.put("[other][0][p]", 10000L);
ClusterInfo info = new DevNullClusterInfo(ImmutableOpenMap.of(), ImmutableOpenMap.of(), shardSizes.build());
ShardRouting test_0 = ShardRouting.newUnassigned("test", 0, null, false, new UnassignedInfo(UnassignedInfo.Reason.INDEX_CREATED, "foo"));
ShardRoutingHelper.initialize(test_0, "node1");
ShardRoutingHelper.moveToStarted(test_0);
ShardRoutingHelper.relocate(test_0, "node2");
ShardRouting test_1 = ShardRouting.newUnassigned("test", 1, null, false, new UnassignedInfo(UnassignedInfo.Reason.INDEX_CREATED, "foo"));
ShardRoutingHelper.initialize(test_1, "node2");
ShardRoutingHelper.moveToStarted(test_1);
ShardRoutingHelper.relocate(test_1, "node1");
ShardRouting test_2 = ShardRouting.newUnassigned("test", 2, null, false, new UnassignedInfo(UnassignedInfo.Reason.INDEX_CREATED, "foo"));
ShardRoutingHelper.initialize(test_2, "node1");
ShardRoutingHelper.moveToStarted(test_2);
assertEquals(1000l, DiskThresholdDecider.getShardSize(test_2, info));
assertEquals(100l, DiskThresholdDecider.getShardSize(test_1, info));
assertEquals(10l, DiskThresholdDecider.getShardSize(test_0, info));
RoutingNode node = new RoutingNode("node1", new DiscoveryNode("node1", LocalTransportAddress.PROTO, Version.CURRENT), Arrays.asList(test_0, test_1.buildTargetRelocatingShard(), test_2));
assertEquals(100l, DiskThresholdDecider.sizeOfRelocatingShards(node, info, false, "/dev/null"));
assertEquals(90l, DiskThresholdDecider.sizeOfRelocatingShards(node, info, true, "/dev/null"));
assertEquals(0l, DiskThresholdDecider.sizeOfRelocatingShards(node, info, true, "/dev/some/other/dev"));
assertEquals(0l, DiskThresholdDecider.sizeOfRelocatingShards(node, info, true, "/dev/some/other/dev"));
ShardRouting test_3 = ShardRouting.newUnassigned("test", 3, null, false, new UnassignedInfo(UnassignedInfo.Reason.INDEX_CREATED, "foo"));
ShardRoutingHelper.initialize(test_3, "node1");
ShardRoutingHelper.moveToStarted(test_3);
assertEquals(0l, DiskThresholdDecider.getShardSize(test_3, info));
ShardRouting other_0 = ShardRouting.newUnassigned("other", 0, null, randomBoolean(), new UnassignedInfo(UnassignedInfo.Reason.INDEX_CREATED, "foo"));
ShardRoutingHelper.initialize(other_0, "node2");
ShardRoutingHelper.moveToStarted(other_0);
ShardRoutingHelper.relocate(other_0, "node1");
node = new RoutingNode("node1", new DiscoveryNode("node1", LocalTransportAddress.PROTO, Version.CURRENT), Arrays.asList(test_0, test_1.buildTargetRelocatingShard(), test_2, other_0.buildTargetRelocatingShard()));
if (other_0.primary()) {
assertEquals(10100l, DiskThresholdDecider.sizeOfRelocatingShards(node, info, false, "/dev/null"));
assertEquals(10090l, DiskThresholdDecider.sizeOfRelocatingShards(node, info, true, "/dev/null"));
} else {
assertEquals(100l, DiskThresholdDecider.sizeOfRelocatingShards(node, info, false, "/dev/null"));
assertEquals(90l, DiskThresholdDecider.sizeOfRelocatingShards(node, info, true, "/dev/null"));
}
}
}
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