fuyou001 commented on code in PR #5887:
URL: https://github.com/apache/rocketmq/pull/5887#discussion_r1097207514
##########
store/src/main/java/org/apache/rocketmq/store/DefaultMessageStore.java:
##########
@@ -2743,6 +2852,269 @@ public String getServiceName() {
}
+ class MainBatchDispatchRequestService extends ServiceThread {
+
+ private final ExecutorService batchDispatchRequestExecutor;
+
+ public MainBatchDispatchRequestService() {
+ batchDispatchRequestExecutor = new ThreadPoolExecutor(
+
DefaultMessageStore.this.getBrokerConfig().getBatchDispatchRequestThreadPoolNums(),
+
DefaultMessageStore.this.getBrokerConfig().getBatchDispatchRequestThreadPoolNums(),
+ 1000 * 60,
+ TimeUnit.MICROSECONDS,
+ new LinkedBlockingQueue<>(4096),
+ new
ThreadFactoryImpl("BatchDispatchRequestServiceThread_"),
+ new RejectedExecutionHandler() {
+ @Override
+ public void rejectedExecution(Runnable r,
ThreadPoolExecutor executor) {
+ try {
+ LOGGER.warn("Task {} is blocking put into the
workQueue", r);
+ executor.getQueue().put(r);
+ } catch (InterruptedException e) {
+ LOGGER.error("Task {} failed to put into the
workQueue", r);
+ }
+ }
+ });
+ }
+
+ private void pollBatchDispatchRequest() {
+ if (!batchDispatchRequestQueue.isEmpty()) {
+ BatchDispatchRequest task = batchDispatchRequestQueue.poll();
+ batchDispatchRequestExecutor.execute(() -> {
+ ByteBuffer tmpByteBuffer = task.byteBuffer.duplicate();
Review Comment:
Give you the demo, you run it ,and think about different
```
package org.apache.rocketmq.test;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import org.apache.rocketmq.common.ThreadFactoryImpl;
public class Test {
public static void main(String[] args) {
good(false);
good(true);
bad(false);
bad(true);
}
public static void good(boolean throwException) {
ExecutorService executor = new ThreadPoolExecutor(1, 1,
1000 * 60,
TimeUnit.MICROSECONDS,
new LinkedBlockingQueue<>(2),
new
ThreadFactoryImpl("GoodBatchDispatchRequestServiceThread_"),
new ThreadPoolExecutor.CallerRunsPolicy());
for (int i = 0; i < 15; i++) {
executor.execute(() -> {
try {
TimeUnit.SECONDS.sleep(1);
System.out.println("ThreadName:" +
Thread.currentThread().getName());
if (throwException)
throw new RuntimeException("test");
} catch (Exception e) {
}
});
}
for (int i = 0; i < 5; i++) {
executor.execute(() -> {
System.out.println("testbb");
});
}
System.out.println("test-cccccccc");
}
public static void bad(boolean throwException) {
ExecutorService executor = new ThreadPoolExecutor(1, 1,
1000 * 60,
TimeUnit.MICROSECONDS,
new LinkedBlockingQueue<>(2),
new
ThreadFactoryImpl("BadBatchDispatchRequestServiceThread_"));
for (int i = 0; i < 15; i++) {
executor.execute(() -> {
try {
TimeUnit.SECONDS.sleep(1);
} catch (InterruptedException e) {
}
System.out.println("ThreadName:" +
Thread.currentThread().getName());
if (throwException)
throw new RuntimeException("test");
});
}
for (int i = 0; i < 5; i++) {
executor.execute(() -> {
System.out.println("testbb");
});
}
System.out.println("test-cccccccc");
}
}
```
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