我们正在一个Java应用程序中使用vert.x toolkit(用于在JVM上构建反应式应用程序)。过去几天我们已经开始看到高内存(堆)使用,有时会导致应用程序无响应(由于GC CPU周期使用量很大)。因此,为了研究吃堆内存的情况,我使用了Eclipse MAT工具来查找内存泄漏。这就是它所显示的:
不确定代码中究竟出了什么问题,所以需要专家建议。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。我正在按照本指南vertex.io guide& vert.x java code e.g
的pom.xml
<groupId>io.vertx</groupId>
<artifactId>vertx-core</artifactId>
<version>3.3.3</version>
使用io.vertex请求处理程序代码:
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);
});
}
}
答案 0 :(得分:0)
现在已经解决了!
实际上3.5.2.CR2之前所有版本都有内存泄漏; 有关更多信息,请查看此问题: https://github.com/eclipse/vert.x/issues/2464和fixed commit id。
很快vert.x将公开发布其3.5.2版本。感谢vert.x community。