Zookeeper Connection Timeout Issues

Question

We use curator-framework version 2.3.0 to connect to zookeeper in the pom file.

 <dependency>
        <groupId>org.apache.curator</groupId>
        <artifactId>curator-framework</artifactId>
        <version>2.3.0</version>
    </dependency>
    <dependency>
        <groupId>org.apache.curator</groupId>
        <artifactId>curator-recipes</artifactId>
        <version>2.3.0</version>
    </dependency>

This is used on a highly loaded server, which transfers data to kafka many times, and from time to time we get the following errors. I tried a search on Google, but could not find the exact cause of the problem and the solution to the problem. Looking for ideas on how to solve this problem.

ERROR org.apache.curator.ConnectionState: Connection timed out for connection string (xxx.xx.xx.xx:2181, yy.yy.y.y:2181) and timeout (15000) / elapsed (37893)
org.apache.curator.CuratorConnectionLossException: KeeperErrorCode = ConnectionLoss
        at org.apache.curator.ConnectionState.checkTimeouts(ConnectionState.java:191)
        at org.apache.curator.ConnectionState.getZooKeeper(ConnectionState.java:86)
        at org.apache.curator.CuratorZookeeperClient.getZooKeeper(CuratorZookeeperClient.java:113)
        at org.apache.curator.framework.imps.CuratorFrameworkImpl.getZooKeeper(CuratorFrameworkImpl.java:456)
        at org.apache.curator.framework.imps.BackgroundSyncImpl.performBackgroundOperation(BackgroundSyncImpl.java:40)
        at org.apache.curator.framework.imps.OperationAndData.callPerformBackgroundOperation(OperationAndData.java:65)
        at org.apache.curator.framework.imps.CuratorFrameworkImpl.performBackgroundOperation(CuratorFrameworkImpl.java:672)
        at org.apache.curator.framework.imps.CuratorFrameworkImpl.backgroundOperationsLoop(CuratorFrameworkImpl.java:664)
        at org.apache.curator.framework.imps.CuratorFrameworkImpl.access$300(CuratorFrameworkImpl.java:55)
        at org.apache.curator.framework.imps.CuratorFrameworkImpl$3.call(CuratorFrameworkImpl.java:243)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)