# Flink客户端执行flink命令报错，提示"ClusterRetrieveException"
#### 问题现象
客户端执行**flink run/list/cancel**命令时报错，报错信息如下：
```
org.apache.flink.util.FlinkException: Failed to retrieve job list.
 at org.apache.flink.client.cli.CliFrontend.listJobs(CliFrontend.java:448)
 at org.apache.flink.client.cli.CliFrontend.lambda$list$0(CliFrontend.java:430)
 at org.apache.flink.client.cli.CliFrontend.runClusterAction(CliFrontend.java:985)
 at org.apache.flink.client.cli.CliFrontend.list(CliFrontend.java:427)
 at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1053)
 at org.apache.flink.client.cli.CliFrontend.lambda$main$11(CliFrontend.java:1126)
 at java.security.AccessController.doPrivileged(Native Method)
 at javax.security.auth.Subject.doAs(Subject.java:422)
 at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1729)
 at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
 at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1126)
Caused by: java.util.concurrent.TimeoutException
 at org.apache.flink.runtime.concurrent.FutureUtils$Timeout.run(FutureUtils.java:795)
 at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
 at java.util.concurrent.FutureTask.run(FutureTask.java:266)
 at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
 at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 at java.lang.Thread.run(Thread.java:748)
```
#### 原因分析
- 使用集群外客户端。
- 客户端连接指定的flink集群已经不存在，或失败退出。
- 使用了错误的客户端，该客户端配置与提交任务使用的客户端配置不同导致。
 
#### 处理步骤
1. 确认所使用客户端是否为集群外客户端，若是请将客户端IP添加至集群**/etc/hosts**文件中。
2. 登录Yarn服务原生界面上查看客户端连接的flink集群状态是否为**Running**状态。
3. 确认提交任务所使用客户端与当前使用客户端是否为同一个，配置项"**high-availability.zookeeper.path.root**"是否相同。