Determine if a node exists before deleting it

6 years ago · 8a4fe1d86e
1 changed files with 4 additions and 1 deletions
--- a/escheduler-common/src/main/java/cn/escheduler/common/queue/TaskQueueZkImpl.java
+++ b/escheduler-common/src/main/java/cn/escheduler/common/queue/TaskQueueZkImpl.java
@ -206,7 +206,10 @@ public class TaskQueueZkImpl extends AbstractZKClient implements ITaskQueue {
        String taskIdPath = tasksQueuePath + nodeValue;
        logger.info("consume task {}", taskIdPath);
        try{
+            Stat stat = zk.checkExists().forPath(taskIdPath);
+            if(stat != null){
                zk.delete().forPath(taskIdPath);
+            }
        }catch(Exception e){
            logger.error(String.format("delete task:%s from zookeeper fail, exception:" ,nodeValue) ,e);
        }