chia7712 commented on code in PR #15705:
URL: https://github.com/apache/kafka/pull/15705#discussion_r1562938471
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clients/src/main/java/org/apache/kafka/common/memory/GarbageCollectedMemoryPool.java:
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@@ -37,13 +37,13 @@ public class GarbageCollectedMemoryPool extends
SimpleMemoryPool implements Auto
//serves 2 purposes - 1st it maintains the ref objects reachable (which is
a requirement for them
//to ever be enqueued), 2nd keeps some (small) metadata for every buffer
allocated
private final Map<BufferReference, BufferMetadata> buffersInFlight = new
ConcurrentHashMap<>();
- private final GarbageCollectionListener gcListener = new
GarbageCollectionListener();
private final Thread gcListenerThread;
- private volatile boolean alive = true;
+ private volatile boolean alive;
public GarbageCollectedMemoryPool(long sizeBytes, int
maxSingleAllocationSize, boolean strict, Sensor oomPeriodSensor) {
super(sizeBytes, maxSingleAllocationSize, strict, oomPeriodSensor);
this.alive = true;
Review Comment:
it seems to me removing `this.alive = true;` is more suitable.
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clients/src/main/java/org/apache/kafka/common/utils/BufferSupplier.java:
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@@ -79,12 +79,8 @@ public ByteBuffer get(int size) {
@Override
public void release(ByteBuffer buffer) {
buffer.clear();
- Deque<ByteBuffer> bufferQueue = bufferMap.get(buffer.capacity());
- if (bufferQueue == null) {
- // We currently keep a single buffer in flight, so optimise
for that case
- bufferQueue = new ArrayDeque<>(1);
- bufferMap.put(buffer.capacity(), bufferQueue);
- }
+ Deque<ByteBuffer> bufferQueue =
bufferMap.computeIfAbsent(buffer.capacity(), k -> new ArrayDeque<>(1));
+ // We currently keep a single buffer in flight, so optimise for
that case
Review Comment:
Can we move this comment up?
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clients/src/main/java/org/apache/kafka/common/network/SslChannelBuilder.java:
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@@ -60,7 +58,6 @@ public SslChannelBuilder(Mode mode,
this.mode = mode;
this.listenerName = listenerName;
this.isInterBrokerListener = isInterBrokerListener;
- this.log = logContext.logger(getClass());
Review Comment:
maybe we should pass it to `Utils.closeQuietly` instead of deleting it.
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clients/src/main/java/org/apache/kafka/clients/admin/internals/CoordinatorStrategy.java:
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@@ -136,8 +136,8 @@ private CoordinatorKey
requireSingletonAndType(Set<CoordinatorKey> keys) {
}
private void ensureSameType(Set<CoordinatorKey> keys) {
- if (keys.size() < 1) {
- throw new IllegalArgumentException("Unexpected size of key set:
expected >= 1, but got " + keys.size());
+ if (keys.isEmpty()) {
+ throw new IllegalArgumentException("Unexpected size of key set:
expected >= 1, but got 0");
Review Comment:
maybe we can say "the keys can't be empty"
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