A : 对于 **1.0.4 以前的版本中**,修改escheduler-api cn.escheduler.api.quartz包下的代码即可
```
[INFO] 2019-05-06 16:39:31.492 cn.escheduler.server.zk.ZKWorkerClient:[155] - register failure , worker already started on : 127.0.0.1, please wait for a moment and try again
public boolean deleteJob(String jobName, String jobGroupName) {
lock.writeLock().lock();
try {
JobKey jobKey = new JobKey(jobName,jobGroupName);
if(scheduler.checkExists(jobKey)){
logger.info("try to delete job, job name: {}, job group name: {},", jobName, jobGroupName);
# data base dir, resource file will store to this hadoop hdfs path, self configuration, please make sure the directory exists on hdfs and have read write permissions。"/escheduler" is recommended