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Make reroute iteration time-bound for large shard allocations (opense…
…arch-project#14848) * Make reroute iteration time-bound for large shard allocations Signed-off-by: Bukhtawar Khan <[email protected]> Co-authored-by: Rishab Nahata <[email protected]>
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66 changes: 66 additions & 0 deletions
66
server/src/main/java/org/opensearch/common/util/BatchRunnableExecutor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
|
|
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| package org.opensearch.common.util; | ||
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| import org.apache.logging.log4j.LogManager; | ||
| import org.apache.logging.log4j.Logger; | ||
| import org.opensearch.common.Randomness; | ||
| import org.opensearch.common.unit.TimeValue; | ||
| import org.opensearch.common.util.concurrent.TimeoutAwareRunnable; | ||
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| import java.util.List; | ||
| import java.util.concurrent.TimeUnit; | ||
| import java.util.function.Supplier; | ||
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| /** | ||
| * A {@link Runnable} that iteratively executes a batch of {@link TimeoutAwareRunnable}s. If the elapsed time exceeds the timeout defined by {@link TimeValue} timeout, then all subsequent {@link TimeoutAwareRunnable}s will have their {@link TimeoutAwareRunnable#onTimeout} method invoked and will not be run. | ||
| * | ||
| * @opensearch.internal | ||
| */ | ||
| public class BatchRunnableExecutor implements Runnable { | ||
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| private final Supplier<TimeValue> timeoutSupplier; | ||
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| private final List<TimeoutAwareRunnable> timeoutAwareRunnables; | ||
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| private static final Logger logger = LogManager.getLogger(BatchRunnableExecutor.class); | ||
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| public BatchRunnableExecutor(List<TimeoutAwareRunnable> timeoutAwareRunnables, Supplier<TimeValue> timeoutSupplier) { | ||
| this.timeoutSupplier = timeoutSupplier; | ||
| this.timeoutAwareRunnables = timeoutAwareRunnables; | ||
| } | ||
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| // for tests | ||
| public List<TimeoutAwareRunnable> getTimeoutAwareRunnables() { | ||
| return this.timeoutAwareRunnables; | ||
| } | ||
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| @Override | ||
| public void run() { | ||
| logger.debug("Starting execution of runnable of size [{}]", timeoutAwareRunnables.size()); | ||
| long startTime = System.nanoTime(); | ||
| if (timeoutAwareRunnables.isEmpty()) { | ||
| return; | ||
| } | ||
| Randomness.shuffle(timeoutAwareRunnables); | ||
| for (TimeoutAwareRunnable runnable : timeoutAwareRunnables) { | ||
| if (timeoutSupplier.get().nanos() < 0 || System.nanoTime() - startTime < timeoutSupplier.get().nanos()) { | ||
| runnable.run(); | ||
| } else { | ||
| logger.debug("Executing timeout for runnable of size [{}]", timeoutAwareRunnables.size()); | ||
| runnable.onTimeout(); | ||
| } | ||
| } | ||
| logger.debug( | ||
| "Time taken to execute timed runnables in this cycle:[{}ms]", | ||
| TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startTime) | ||
| ); | ||
| } | ||
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| } |
19 changes: 19 additions & 0 deletions
19
server/src/main/java/org/opensearch/common/util/concurrent/TimeoutAwareRunnable.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
|
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| package org.opensearch.common.util.concurrent; | ||
|
|
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| /** | ||
| * Runnable that is aware of a timeout | ||
| * | ||
| * @opensearch.internal | ||
| */ | ||
| public interface TimeoutAwareRunnable extends Runnable { | ||
|
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| void onTimeout(); | ||
| } |
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