Jiezhi edited a comment on issue #6973:
URL: 
https://github.com/apache/dolphinscheduler/issues/6973#issuecomment-979779210


   When upgrade db `sh ./script/create-dolphinscheduler.sh` from 1.3.7 to 
2.0.0-alpha
   ```java
   15:29:55.114 [main] INFO 
org.apache.dolphinscheduler.common.utils.ScriptRunner - sql: alter table 
t_ds_process_definition modify `description` text COMMENT 'description' after 
`version`
   15:29:55.167 [main] INFO 
org.apache.dolphinscheduler.common.utils.ScriptRunner - sql: alter table 
t_ds_process_definition modify `release_state` tinyint(4) DEFAULT NULL COMMENT 
'process definition release state???0:offline,1:online' after `project_code`
   15:29:55.208 [main] INFO 
org.apache.dolphinscheduler.common.utils.ScriptRunner - sql: alter table 
t_ds_process_definition modify `create_time` datetime DEFAULT NULL COMMENT 
'create time' after `tenant_id`
   15:29:55.256 [main] INFO org.apache.dolphinscheduler.dao.upgrade.UpgradeDao 
- 
sqlSQLFilePath/opt/dolphinscheduler/apache-dolphinscheduler-2.0.0-bin/sql/upgrade/2.0.0_schema/mysql/dolphinscheduler_dml.sql
   15:29:55.276 [main] DEBUG com.alibaba.druid.pool.PreparedStatementPool - 
stmt enter cache
   15:29:55.278 [main] DEBUG com.alibaba.druid.pool.PreparedStatementPool - 
stmt enter cache
   15:29:55.302 [main] DEBUG com.alibaba.druid.pool.PreparedStatementPool - 
stmt enter cache
   15:29:55.303 [main] DEBUG com.alibaba.druid.pool.PreparedStatementPool - 
stmt enter cache
   15:29:55.435 [main] DEBUG com.alibaba.druid.pool.PreparedStatementPool - 
stmt enter cache
   15:29:55.454 [main] DEBUG com.alibaba.druid.pool.PreparedStatementPool - 
stmt enter cache
   15:29:55.530 [main] DEBUG com.alibaba.druid.pool.PreparedStatementPool - 
stmt enter cache
   15:29:55.793 [main] ERROR org.apache.dolphinscheduler.dao.upgrade.UpgradeDao 
- json split error
   java.lang.NullPointerException: null
        at 
org.apache.dolphinscheduler.dao.upgrade.UpgradeDao.convertDependence(UpgradeDao.java:792)
        at 
org.apache.dolphinscheduler.dao.upgrade.UpgradeDao.processDefinitionJsonSplit(UpgradeDao.java:608)
        at 
org.apache.dolphinscheduler.dao.upgrade.UpgradeDao.upgradeDolphinSchedulerTo200(UpgradeDao.java:322)
        at 
org.apache.dolphinscheduler.dao.upgrade.DolphinSchedulerManager.upgradeDolphinScheduler(DolphinSchedulerManager.java:122)
        at 
org.apache.dolphinscheduler.dao.upgrade.shell.CreateDolphinScheduler.main(CreateDolphinScheduler.java:41)
   15:29:55.794 [main] INFO org.apache.dolphinscheduler.dao.upgrade.UpgradeDao 
- dolphinscheduler
   15:29:55.794 [main] INFO 
org.apache.dolphinscheduler.common.utils.ScriptRunner - sql: /*  * Licensed 
toxxxx license. */ 
   alter table t_ds_process_definition drop primary key, ADD PRIMARY KEY 
(`id`,`code`)
   15:29:55.827 [main] INFO 
org.apache.dolphinscheduler.common.utils.ScriptRunner - sql: ALTER TABLE 
t_ds_process_definition drop KEY `process_definition_unique`
   15:29:55.837 [main] INFO 
org.apache.dolphinscheduler.common.utils.ScriptRunner - sql: ALTER TABLE 
t_ds_process_definition drop KEY `process_definition_index`
   15:29:55.845 [main] INFO 
org.apache.dolphinscheduler.common.utils.ScriptRunner - sql: alter table 
t_ds_process_definition drop process_definition_json
   15:29:55.866 [main] INFO 
org.apache.dolphinscheduler.common.utils.ScriptRunner - sql: alter table 
t_ds_process_definition drop connects
   15:29:55.887 [main] INFO 
org.apache.dolphinscheduler.common.utils.ScriptRunner - sql: alter table 
t_ds_process_definition drop receivers
   15:29:55.907 [main] INFO 
org.apache.dolphinscheduler.common.utils.ScriptRunner - sql: alter table 
t_ds_process_definition drop receivers_cc
   15:29:55.927 [main] INFO 
org.apache.dolphinscheduler.common.utils.ScriptRunner - sql: alter table 
t_ds_process_definition drop modify_by
   15:29:55.945 [main] INFO 
org.apache.dolphinscheduler.common.utils.ScriptRunner - sql: alter table 
t_ds_process_definition drop resource_ids
   15:29:55.974 [main] INFO 
org.apache.dolphinscheduler.dao.upgrade.shell.CreateDolphinScheduler - upgrade 
DolphinScheduler finished
   15:29:55.974 [main] INFO 
org.apache.dolphinscheduler.dao.upgrade.shell.CreateDolphinScheduler - create 
DolphinScheduler success
   ```
   
   It seems upgrade table t_ds_process_definition failed, and the api of 
`process-definition` failed to work too!
   
   ```java
   [INFO] 2021-11-26 16:13:54.023 
org.apache.dolphinscheduler.api.aspect.AccessLogAspect:[76] - REQUEST 
TRANCE_ID:bca3655b-922c-4f82-a424-f383dede1098, LOGIN_USER:admin, 
URI:/dolphinscheduler/projects/3645618595296/process-definition, METHOD:GET, 
HANDLER:org.apache.dolphinscheduler.api.controller.ProcessDefinitionController.queryProcessDefinitionListPaging,
 ARGS:{searchVal=, projectCode=3645618595296, pageNo=1, pageSize=10, userId=0}
   [ERROR] 2021-11-26 16:13:54.042 
org.apache.dolphinscheduler.api.exceptions.ApiExceptionHandler:[46] - 
分页查询工作流定义列表错误
   java.lang.NullPointerException: null
        at 
org.apache.dolphinscheduler.api.service.impl.ProcessDefinitionServiceImpl.queryProcessDefinitionListPaging(ProcessDefinitionServiceImpl.java:411)
        at 
org.apache.dolphinscheduler.api.service.impl.ProcessDefinitionServiceImpl$$FastClassBySpringCGLIB$$e8e34ed9.invoke(<generated>)
        at 
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
        at 
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:687)
        at 
org.apache.dolphinscheduler.api.service.impl.ProcessDefinitionServiceImpl$$EnhancerBySpringCGLIB$$d9e8ca3d.queryProcessDefinitionListPaging(<generated>)
        at 
org.apache.dolphinscheduler.api.controller.ProcessDefinitionController.queryProcessDefinitionListPaging(ProcessDefinitionController.java:493)
        at 
org.apache.dolphinscheduler.api.controller.ProcessDefinitionController$$FastClassBySpringCGLIB$$dc9bf5db.invoke(<generated>)
        at 
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
        at 
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:752)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
        at 
org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:88)
        at 
org.apache.dolphinscheduler.api.aspect.AccessLogAspect.doAround(AccessLogAspect.java:87)
        at sun.reflect.GeneratedMethodAccessor156.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at 
org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:644)
        at 
org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:633)
   ```


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