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Add scheduler support for custom partitioning across nodes
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56
...in/src/main/java/com/facebook/presto/execution/scheduler/DynamicSplitPlacementPolicy.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| /* | ||
| * Licensed 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 com.facebook.presto.execution.scheduler; | ||
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| import com.facebook.presto.execution.RemoteTask; | ||
| import com.facebook.presto.metadata.Split; | ||
| import com.facebook.presto.spi.Node; | ||
| import com.google.common.collect.Multimap; | ||
|
|
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| import java.util.List; | ||
| import java.util.Set; | ||
| import java.util.function.Supplier; | ||
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| import static java.util.Objects.requireNonNull; | ||
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| public class DynamicSplitPlacementPolicy | ||
| implements SplitPlacementPolicy | ||
| { | ||
| private final NodeSelector nodeSelector; | ||
| private final Supplier<? extends List<RemoteTask>> remoteTasks; | ||
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| public DynamicSplitPlacementPolicy(NodeSelector nodeSelector, Supplier<? extends List<RemoteTask>> remoteTasks) | ||
| { | ||
| this.nodeSelector = requireNonNull(nodeSelector, "nodeSelector is null"); | ||
| this.remoteTasks = requireNonNull(remoteTasks, "remoteTasks is null"); | ||
| } | ||
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| @Override | ||
| public Multimap<Node, Split> computeAssignments(Set<Split> splits) | ||
| { | ||
| return nodeSelector.computeAssignments(splits, remoteTasks.get()); | ||
| } | ||
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| @Override | ||
| public void lockDownNodes() | ||
| { | ||
| nodeSelector.lockDownNodes(); | ||
| } | ||
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| @Override | ||
| public List<Node> allNodes() | ||
| { | ||
| return nodeSelector.allNodes(); | ||
| } | ||
| } |
113 changes: 113 additions & 0 deletions
113
...rc/main/java/com/facebook/presto/execution/scheduler/FixedSourcePartitionedScheduler.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| /* | ||
| * Licensed 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 com.facebook.presto.execution.scheduler; | ||
|
|
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| import com.facebook.presto.execution.RemoteTask; | ||
| import com.facebook.presto.execution.SqlStageExecution; | ||
| import com.facebook.presto.metadata.Split; | ||
| import com.facebook.presto.spi.Node; | ||
| import com.facebook.presto.split.SplitSource; | ||
| import com.facebook.presto.sql.planner.NodePartitionMap; | ||
| import com.google.common.collect.ImmutableList; | ||
| import com.google.common.collect.Multimap; | ||
|
|
||
| import java.util.List; | ||
| import java.util.Set; | ||
| import java.util.function.Supplier; | ||
|
|
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| import static com.facebook.presto.util.ImmutableCollectors.toImmutableList; | ||
| import static java.util.Objects.requireNonNull; | ||
|
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| public class FixedSourcePartitionedScheduler | ||
| implements StageScheduler | ||
| { | ||
| private final SqlStageExecution stage; | ||
| private final NodePartitionMap partitioning; | ||
| private final SourcePartitionedScheduler sourcePartitionedScheduler; | ||
| private boolean scheduledTasks; | ||
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| public FixedSourcePartitionedScheduler( | ||
| SqlStageExecution stage, | ||
| SplitSource splitSource, | ||
| NodePartitionMap partitioning, | ||
| int splitBatchSize, | ||
| NodeSelector nodeSelector) | ||
| { | ||
| requireNonNull(stage, "stage is null"); | ||
| requireNonNull(splitSource, "splitSource is null"); | ||
| requireNonNull(partitioning, "partitioning is null"); | ||
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| this.stage = stage; | ||
| this.partitioning = partitioning; | ||
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| FixedSplitPlacementPolicy splitPlacementPolicy = new FixedSplitPlacementPolicy(nodeSelector, partitioning, stage::getAllTasks); | ||
| sourcePartitionedScheduler = new SourcePartitionedScheduler(stage, splitSource, splitPlacementPolicy, splitBatchSize); | ||
| } | ||
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| @Override | ||
| public ScheduleResult schedule() | ||
| { | ||
| // schedule a task on every node in the distribution | ||
| List<RemoteTask> newTasks = ImmutableList.of(); | ||
| if (!scheduledTasks) { | ||
| newTasks = partitioning.getPartitionToNode().entrySet().stream() | ||
| .map(entry -> stage.scheduleTask(entry.getValue(), entry.getKey())) | ||
| .collect(toImmutableList()); | ||
| scheduledTasks = true; | ||
| } | ||
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| ScheduleResult schedule = sourcePartitionedScheduler.schedule(); | ||
| return new ScheduleResult(schedule.isFinished(), newTasks, schedule.getBlocked()); | ||
| } | ||
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| @Override | ||
| public void close() | ||
| { | ||
| sourcePartitionedScheduler.close(); | ||
| } | ||
|
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| private static class FixedSplitPlacementPolicy | ||
| implements SplitPlacementPolicy | ||
| { | ||
| private final NodeSelector nodeSelector; | ||
| private final NodePartitionMap partitioning; | ||
| private final Supplier<? extends List<RemoteTask>> remoteTasks; | ||
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| public FixedSplitPlacementPolicy(NodeSelector nodeSelector, | ||
| NodePartitionMap partitioning, | ||
| Supplier<? extends List<RemoteTask>> remoteTasks) | ||
| { | ||
| this.nodeSelector = nodeSelector; | ||
| this.partitioning = partitioning; | ||
| this.remoteTasks = remoteTasks; | ||
| } | ||
|
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| @Override | ||
| public Multimap<Node, Split> computeAssignments(Set<Split> splits) | ||
| { | ||
| return nodeSelector.computeAssignments(splits, remoteTasks.get(), partitioning); | ||
| } | ||
|
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| @Override | ||
| public void lockDownNodes() | ||
| { | ||
| } | ||
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| @Override | ||
| public List<Node> allNodes() | ||
| { | ||
| return ImmutableList.copyOf(partitioning.getPartitionToNode().values()); | ||
| } | ||
| } | ||
| } |
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