项目依赖pom

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
    <version>2.0.2.RELEASE</version>
</dependency>

<dependency>

    <groupId>com.dangdang</groupId>

    <artifactId>elastic-job-lite-core</artifactId>
    <version>2.1.1</version>
    <exclusions>
        <exclusion>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
        </exclusion>
    </exclusions>
</dependency>

<!-- import other module if need -->
<dependency>
    <groupId>com.dangdang</groupId>
    <artifactId>elastic-job-lite-spring</artifactId>
    <version>2.1.1</version>
</dependency>

报错信息如下：

警告: The web application [ROOT] appears to have started a thread named [MaintenanceTimer-1-thread-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.net.SocketInputStream.socketRead0(Native Method)
java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
java.net.SocketInputStream.read(SocketInputStream.java:171)
java.net.SocketInputStream.read(SocketInputStream.java:141)
com.mongodb.internal.connection.SocketStream.read(SocketStream.java:89)
com.mongodb.internal.connection.InternalStreamConnection.receiveResponseBuffers(InternalStreamConnection.java:554)
com.mongodb.internal.connection.InternalStreamConnection.receiveMessage(InternalStreamConnection.java:425)
com.mongodb.internal.connection.InternalStreamConnection.receiveCommandMessageResponse(InternalStreamConnection.java:289)
com.mongodb.internal.connection.InternalStreamConnection.sendAndReceive(InternalStreamConnection.java:255)
com.mongodb.internal.connection.CommandHelper.sendAndReceive(CommandHelper.java:83)
com.mongodb.internal.connection.CommandHelper.executeCommandWithoutCheckingForFailure(CommandHelper.java:44)
com.mongodb.internal.connection.InternalStreamConnectionInitializer.completeConnectionDescriptionInitialization(InternalStreamConnectionInitializer.java:142)
com.mongodb.internal.connection.InternalStreamConnectionInitializer.initialize(InternalStreamConnectionInitializer.java:65)
com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:127)
com.mongodb.internal.connection.UsageTrackingInternalConnection.open(UsageTrackingInternalConnection.java:50)
com.mongodb.internal.connection.DefaultConnectionPool$UsageTrackingInternalConnectionItemFactory.create(DefaultConnectionPool.java:524)
com.mongodb.internal.connection.DefaultConnectionPool$UsageTrackingInternalConnectionItemFactory.create(DefaultConnectionPool.java:512)
com.mongodb.internal.connection.ConcurrentPool.createNewAndReleasePermitIfFailure(ConcurrentPool.java:181)
com.mongodb.internal.connection.ConcurrentPool.ensureMinSize(ConcurrentPool.java:175)
com.mongodb.internal.connection.DefaultConnectionPool$3.run(DefaultConnectionPool.java:306)
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
java.lang.Thread.run(Thread.java:748)
十二月 14, 2021 11:58:03 上午 org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads
警告: The web application [ROOT] appears to have started a thread named [cluster-ClusterId{value='61b8164b569ba409d49739c7', description='null'}-192.168.36.107:27017] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.waitForSignalOrTimeout(DefaultServerMonitor.java:229)
com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.waitForNext(DefaultServerMonitor.java:210)
com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:157)
java.lang.Thread.run(Thread.java:748)
十二月 14, 2021 11:58:03 上午 org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads
警告: The web application [ROOT] appears to have started a thread named [CleanCursors-2-thread-1] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)
java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
java.lang.Thread.run(Thread.java:748)

Process finished with exit code 1

【解决方法】项目中用了springcloud feign和Dubbo两套，引用elastic-job包导致的报错，最后排查

spring-cloud-starter-zookeeper-discovery包版本引起的冲突，修改如下最后解决的。

<!--springcloud start-->
<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
    <version>2.0.2.RELEASE</version>
    <exclusions>
        <exclusion>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
        </exclusion>
        <exclusion>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-x-discovery</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.apache.curator</groupId>
    <artifactId>curator-x-discovery</artifactId>
    <version>2.11.1</version>
</dependency>
<dependency>
    <groupId>org.apache.curator</groupId>
    <artifactId>curator-recipes</artifactId>
    <version>2.11.1</version>
</dependency>
<dependency>
    <groupId>org.apache.curator</groupId>
    <artifactId>curator-framework</artifactId>
    <version>2.11.1</version>
</dependency>
<dependency>
    <groupId>com.google.guava</groupId>
    <artifactId>guava</artifactId>
    <version>18.0</version>
</dependency>