syncwt commented on issue #10037:
URL: 
https://github.com/apache/dolphinscheduler/issues/10037#issuecomment-1127424805

   > 
   
   I have tried to upgrade 1.3.5 to 1.3.9 ,and then 2.0.5. successful from 
1.3.5 to 1.3.9, but the same error from 1.3.9 to 2.0.5.
   ```
   2022-05-16 16:07:31.829  INFO 27457 --- [           main] 
o.a.d.d.upgrade.DolphinSchedulerManager  : upgrade DolphinScheduler metadata 
version from 1.3.9 to 2.0.0
   ```
   
   ```
   2022-05-16 16:21:41.902 ERROR 27457 --- [           main] 
o.a.d.dao.upgrade.UpgradeDao             : json split error
   
   java.lang.NullPointerException: null
           at 
org.apache.dolphinscheduler.dao.upgrade.UpgradeDao.convertDependence(UpgradeDao.java:602)
 [dolphinscheduler-dao-2.0.5.jar:2.0.5]
           at 
org.apache.dolphinscheduler.dao.upgrade.UpgradeDao.processDefinitionJsonSplit(UpgradeDao.java:406)
 [dolphinscheduler-dao-2.0.5.jar:2.0.5]
           at 
org.apache.dolphinscheduler.dao.upgrade.UpgradeDao.upgradeDolphinSchedulerTo200(UpgradeDao.java:149)
 [dolphinscheduler-dao-2.0.5.jar:2.0.5]
           at 
org.apache.dolphinscheduler.dao.upgrade.DolphinSchedulerManager.upgradeDolphinScheduler(DolphinSchedulerManager.java:111)
 [dolphinscheduler-dao-2.0.5.jar:2.0.5]
           at 
org.apache.dolphinscheduler.dao.upgrade.shell.UpgradeDolphinScheduler$UpgradeRunner.run(UpgradeDolphinScheduler.java:55)
 [dolphinscheduler-dao-2.0.5.jar:2.0.5]
           at 
org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:791)
 [spring-boot-2.5.6.jar:2.5.6]
           at 
org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:775)
 [spring-boot-2.5.6.jar:2.5.6]
           at 
org.springframework.boot.SpringApplication.run(SpringApplication.java:345) 
[spring-boot-2.5.6.jar:2.5.6]
           at 
org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:143)
 [spring-boot-2.5.6.jar:2.5.6]
           at 
org.apache.dolphinscheduler.dao.upgrade.shell.UpgradeDolphinScheduler.main(UpgradeDolphinScheduler.java:39)
 [dolphinscheduler-dao-2.0.5.jar:2.0.5]
   ```
   Maybe some wrong data in my database in old version?


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