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Example 1 with BUFFER_DEBLOAT_THRESHOLD_PERCENTAGES

use of org.apache.flink.configuration.TaskManagerOptions.BUFFER_DEBLOAT_THRESHOLD_PERCENTAGES in project flink by apache.

the class StreamTaskTest method testBufferSizeRecalculationStartSuccessfully.

@Test
public void testBufferSizeRecalculationStartSuccessfully() throws Exception {
    int expectedThroughput = 13333;
    int inputChannels = 3;
    // debloat period doesn't matter, we will schedule debloating manually
    Configuration config = new Configuration().set(BUFFER_DEBLOAT_PERIOD, Duration.ofHours(10)).set(BUFFER_DEBLOAT_TARGET, Duration.ofSeconds(1)).set(BUFFER_DEBLOAT_THRESHOLD_PERCENTAGES, 1).set(BUFFER_DEBLOAT_ENABLED, true);
    try (StreamTaskMailboxTestHarness<String> harness = new StreamTaskMailboxTestHarnessBuilder<>(OneInputStreamTask::new, STRING_TYPE_INFO).setTaskManagerRuntimeInfo(new TestingTaskManagerRuntimeInfo(config)).addInput(STRING_TYPE_INFO, inputChannels).addInput(STRING_TYPE_INFO, inputChannels).modifyGateBuilder(gateBuilder -> gateBuilder.setThroughputCalculator(bufferDebloatConfiguration -> new ThroughputCalculator(SystemClock.getInstance()) {

        @Override
        public long calculateThroughput() {
            return expectedThroughput;
        }
    })).setupOutputForSingletonOperatorChain(new TestBoundedOneInputStreamOperator()).build()) {
        harness.processAll();
        harness.streamTask.debloat();
        long lastBufferSize = -1;
        for (InputGate inputGate : harness.streamTask.getEnvironment().getAllInputGates()) {
            for (int i = 0; i < inputGate.getNumberOfInputChannels(); i++) {
                long currentBufferSize = ((TestInputChannel) inputGate.getChannel(i)).getCurrentBufferSize();
                assertThat(currentBufferSize, lessThan(MEMORY_SEGMENT_SIZE.defaultValue().getBytes()));
                assertThat(currentBufferSize, greaterThan(0L));
                if (lastBufferSize > 0) {
                    assertThat(lastBufferSize, is(currentBufferSize));
                }
                lastBufferSize = currentBufferSize;
            }
        }
    }
}
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Example 2 with BUFFER_DEBLOAT_THRESHOLD_PERCENTAGES

use of org.apache.flink.configuration.TaskManagerOptions.BUFFER_DEBLOAT_THRESHOLD_PERCENTAGES in project flink by apache.

the class StreamTaskTest method testBufferDebloatingMultiGates.

@Test
public void testBufferDebloatingMultiGates() throws Exception {
    // debloat period doesn't matter, we will schedule debloating manually
    Configuration config = new Configuration().set(BUFFER_DEBLOAT_PERIOD, Duration.ofHours(10)).set(BUFFER_DEBLOAT_TARGET, Duration.ofSeconds(1)).set(BUFFER_DEBLOAT_ENABLED, true).set(BUFFER_DEBLOAT_THRESHOLD_PERCENTAGES, // disable the threshold to achieve exact buffer sizes
    0);
    final long throughputGate1 = 1024L;
    final long throughputGate2 = 60 * 1024L;
    final int inputChannelsGate1 = 1;
    final int inputChannelsGate2 = 4;
    final ThroughputCalculator throughputCalculator = new ThroughputCalculator(SystemClock.getInstance()) {

        /* parameters are ignored */
        private int callCount = 0;

        @Override
        public long calculateThroughput() {
            if (callCount++ % 2 == 0) {
                return throughputGate1;
            } else {
                return throughputGate2;
            }
        }
    };
    try (StreamTaskMailboxTestHarness<String> harness = new StreamTaskMailboxTestHarnessBuilder<>(OneInputStreamTask::new, STRING_TYPE_INFO).setTaskManagerRuntimeInfo(new TestingTaskManagerRuntimeInfo(config)).addInput(STRING_TYPE_INFO, inputChannelsGate1).addInput(STRING_TYPE_INFO, inputChannelsGate2).modifyGateBuilder(gateBuilder -> gateBuilder.setThroughputCalculator(bufferDebloatConfiguration -> throughputCalculator)).setupOutputForSingletonOperatorChain(new TestBoundedOneInputStreamOperator()).build()) {
        final IndexedInputGate[] inputGates = harness.streamTask.getEnvironment().getAllInputGates();
        harness.processAll();
        // call debloating until the EMA reaches the target buffer size
        while (getCurrentBufferSize(inputGates[0]) == 0 || getCurrentBufferSize(inputGates[0]) > throughputGate1) {
            harness.streamTask.debloat();
        }
        assertThat(getCurrentBufferSize(inputGates[0]), equalTo((int) throughputGate1));
        assertThat(getCurrentBufferSize(inputGates[1]), equalTo((int) throughputGate2 / inputChannelsGate2));
    }
}
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Aggregations

Closeable (java.io.Closeable)2 IOException (java.io.IOException)2 ObjectInputStream (java.io.ObjectInputStream)2 Duration (java.time.Duration)2 ArrayList (java.util.ArrayList)2 Arrays (java.util.Arrays)2 Arrays.asList (java.util.Arrays.asList)2 Collections (java.util.Collections)2 Collections.singletonList (java.util.Collections.singletonList)2 List (java.util.List)2 Map (java.util.Map)2 Optional (java.util.Optional)2 OptionalLong (java.util.OptionalLong)2 CompletableFuture (java.util.concurrent.CompletableFuture)2 CountDownLatch (java.util.concurrent.CountDownLatch)2 ExecutionException (java.util.concurrent.ExecutionException)2 ExecutorService (java.util.concurrent.ExecutorService)2 Executors (java.util.concurrent.Executors)2 RunnableFuture (java.util.concurrent.RunnableFuture)2 TimeUnit (java.util.concurrent.TimeUnit)2