Java 应用程序 io.vertx.core.impl.EventLoopContext 内存泄漏

Question

我们正在 Java 应用程序之一中使用 vert.x 工具包（用于在 JVM 上构建反应式应用程序）。过去几天，我们开始看到高内存（堆）使用率，有时会导致应用程序无响应（由于大量 GC CPU 循环使用）。因此，为了调查什么在占用堆内存，我使用了 Eclipse MAT 工具来查找内存泄漏。这是它显示的内容：

不确定代码中到底出了什么问题，所以需要专家在这里提供建议。请在下面找到我的 pom 和顶点代码。如果您需要其他详细信息，请告诉我。我正在遵循本指南 vertex.io guide & vert.x java code e.g

Pom.xml

        <groupId>io.vertx</groupId>
        <artifactId>vertx-core</artifactId>
        <version>3.3.3</version>

请求处理程序代码使用 io.vertex :

import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.container.AsyncResponse;
import javax.ws.rs.container.Suspended;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import io.vertx.core.Vertx;
import io.vertx.core.WorkerExecutor; 

public class Processor {

private static final Map<String, WorkerExecutor> executorMap = new ConcurrentHashMap<>();

public WorkerExecutor getWorkerExecutor(String threadName, Vertx vertxObj) {
    WorkerExecutor executor = executorMap.get(threadName);
    if (executor == null) {
        synchronized (Processors.class) {
            executor = executorMap.get(threadName);
            if(executor == null){
                executor = vertxObj.createSharedWorkerExecutor(threadName);
                executorMap.putIfAbsent(threadName, executor);
            }
        }
    }
    return executor;
}

@POST
@Path("/update_record")
@Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_JSON })
public void processUpdateEvent(String data, @Suspended final AsyncResponse asyncResponse, @Context Vertx vertx) throws Exception{
    logger.info("update called");
    WorkerExecutor executor = getWorkerExecutor("update_record_event", vertx);
    executor.executeBlocking(future -> {
        MyProcessor processor = (MyProcessor) MainClass.context.getBean("myprocessorevent");
        try {
            processor.processMessage(data);
            future.complete();
        } catch (Exception e) {
            logger.error("consuming event failed: " + e.getMessage());
            future.fail(e);
        }
    }, res -> {
        Response response  = null;
        if(res.succeeded()) {
            response = Response.status(Response.Status.OK).build();
        } else {
            response = Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
        }
        asyncResponse.resume(response);
    });
  }
}

Answer 1

现在已经解决了！

Actually there was a memory leak to all the versions before 3.5.2.CR2 ; For more insight check this issue reported : https://github.com/eclipse/vert.x/issues/2464 and fixed commit id .

所以很快 vert.x will launch its 3.5.2 version publicly. Thanks to vert.x community。

Java 应用程序 io.vertx.core.impl.EventLoopContext 内存泄漏

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