[GitHub] [shardingsphere-elasticjob] johnny2002 edited a comment on issue #1720: Customize the JobInstance

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johnny2002 edited a comment on issue #1720:
URL: https://github.com/apache/shardingsphere-elasticjob/issues/1720#issuecomment-727560738


   > @johnny2002 Hi, thank you for the suggestion.
   > I want discuss further.
   > Job instance id is internal impl in elastic job which user should not focus on them.
   > It is not a good idea to expose lots of internal impl to special reason.
   > 
   > Can you consider about reuse the job sharding strategy to rebalance your sub-job?
   
   H Terry,
   
   Of course I want to use my own sharding strategy to assign sub-job, while, the job strategy api passed in a list of instances, I need to exactly identify the jobinstance, so that I can assign corresponding sub-job to correct jobInstance. In my application, JobInstances are not equivalent.  **Each jobinstance only has the resource to handle 1 or 2 specific sub-jobs.** e.g. JobInstance from unit 1 can only handle sub-job1 or sub-job2, CANNOT handle other sub-jobs.
   
   Sine JobInstance is expose in JobShardingStrategy api, I don't think it is an internal impl.
   
   
   My sharding strategy is:
   sub-job1 assign to jobInstance 1(or you can say Jobexecutor 1)
   sub-job2 assign to jobInstance 2
   ... ...
   
   in JobShardingStrategy api, I need to identify each jobInstances.
   
   ```java
   public Map<JobInstance, List<Integer>> sharding(final List<JobInstance> jobInstances, final String jobName, final int shardingTotalCount) {
   ```
   
   


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