scwhittle commented on code in PR #33737:
URL: https://github.com/apache/beam/pull/33737#discussion_r1928368937
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runners/google-cloud-dataflow-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/util/common/worker/OutputObjectAndByteCounter.java:
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@@ -18,27 +18,28 @@
package org.apache.beam.runners.dataflow.worker.util.common.worker;
import java.util.Random;
+import java.util.concurrent.ThreadLocalRandom;
import org.apache.beam.runners.core.ElementByteSizeObservable;
import org.apache.beam.runners.dataflow.worker.counters.Counter;
import
org.apache.beam.runners.dataflow.worker.counters.CounterBackedElementByteSizeObserver;
import org.apache.beam.runners.dataflow.worker.counters.CounterFactory;
import
org.apache.beam.runners.dataflow.worker.counters.CounterFactory.CounterMean;
import org.apache.beam.runners.dataflow.worker.counters.CounterName;
import org.apache.beam.runners.dataflow.worker.counters.NameContext;
+import
org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.annotations.VisibleForTesting;
import org.checkerframework.checker.nullness.qual.Nullable;
/** An {@link ElementCounter} that counts output objects, bytes, and mean
bytes. */
@SuppressWarnings({
"nullness" // TODO(https://github.com/apache/beam/issues/20497)
})
public class OutputObjectAndByteCounter implements ElementCounter {
+
// Might be null, e.g., undeclared outputs will not have an
// elementByteSizeObservable.
private final ElementByteSizeObservable<Object> elementByteSizeObservable;
private final CounterFactory counterFactory;
- private Random randomGenerator = new Random();
Review Comment:
makes sense, I thought ThreadLocalRandom internally resolved each time by
thread. I missed the private constructor and current method.
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