[GitHub] [shardingsphere-elasticjob] nevenchen opened a new issue #1840: New instance not able to trigger resharding

[GitBox <gi...@apache.org>]

nevenchen opened a new issue #1840:
URL: https://github.com/apache/shardingsphere-elasticjob/issues/1840


   
   VERSION: 3.0.0.rc1
   Project: ElasticJob-Lite
   
   ### Expected behavior:
   I have a job in my app deployed with 2 node.
   The job set 3 the config 'sharding-total-count' to 3.
   I start one node first, when all 3 sharding job run on the node.
   I start the second node.
   
   The "job-sharding-strategy-class" left as defult.
   After the second node start, I think the second node should take at lease one sharding job.
   That means:
   Node1: Take 2 thread to run the job.
   Node2: Take 1 thread to run the job.
   
   ### Actual behavior:
   Node1: Take 3 thread to run the job.
   Node2: Take 0 thread to run the job.
   
   ### Reason analyze (If you can)
   The ReconcileService is going to see whether a resharding need: 
   ` protected void runOneIteration() {
           int reconcileIntervalMinutes = configService.load(true).getReconcileIntervalMinutes();
           if (reconcileIntervalMinutes > 0 && (System.currentTimeMillis() - lastReconcileTime >= reconcileIntervalMinutes * 60 * 1000)) {
               lastReconcileTime = System.currentTimeMillis();
               if (!shardingService.isNeedSharding() && shardingService.hasShardingInfoInOfflineServers()) {
                   log.warn("Elastic Job: job status node has inconsistent value,start reconciling...");
                   shardingService.setReshardingFlag();
               }
           }
       }`
   
   It find all item from "instances" node in ZK:
   In my case, it is: {10.37.27.20@-@17912, 10.37.27.20@-@18540}
   
   Then for each of those value, to compare whit the sharding job items in ZK node "sharding",
   In my case, the values are: {0: 10.37.27.20@-@17912, 1: 10.37.27.20@-@17912, 2: 10.37.27.20@-@17912 }
   
   As all value from "sharding" are equals with 10.37.27.20@-@17912 from "instances", the resharding with not bee trigger.
   I with make the second app node neven have a chance to take the sharding job item.
   
   ### Steps to reproduce the behavior.
   
   ### Example codes for reproduce this issue (such as a github link).
   


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[GitHub] [shardingsphere-elasticjob] TeslaCN commented on issue #1840: New instance not able to trigger resharding

[GitBox <gi...@apache.org>]

TeslaCN commented on issue #1840:
URL: https://github.com/apache/shardingsphere-elasticjob/issues/1840#issuecomment-787080948


   Hi @nevenchen 
   Could you dump your data in Zookeeper?
   Refer to https://shardingsphere.apache.org/elasticjob/current/en/user-manual/elasticjob-lite/operation/dump/


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[GitHub] [shardingsphere-elasticjob] jingting-zhang commented on issue #1840: New instance not able to trigger resharding

[GitBox <gi...@apache.org>]

jingting-zhang commented on issue #1840:
URL: https://github.com/apache/shardingsphere-elasticjob/issues/1840#issuecomment-1066566244


   @TeslaCN elastic-job不支持新增实例后立即再分片（把已分配但未执行的分片重新分配给新增的实例），只能等下次执行周期再重新分片。这个能否支持，有无必要支持？


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