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https://issues.apache.org/jira/browse/KYLIN-5134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17452129#comment-17452129
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Yaqian Zhang commented on KYLIN-5134:
-------------------------------------
Hi [~xbchao]：
This error should be generated because the kylin service has not been started
successfully or has been stopped. The real error should be printed out before
this log. Can you provide the complete log file and environment information?
> Start kylin4.0,cache.PathChildrenCache:571 : java.lang.IllegalStateException:
> instance must be started before calling this method
> ---------------------------------------------------------------------------------------------------------------------------------
>
> Key: KYLIN-5134
> URL: https://issues.apache.org/jira/browse/KYLIN-5134
> Project: Kylin
> Issue Type: Bug
> Components: Environment
> Affects Versions: v4.0.0
> Reporter: xbchao
> Priority: Major
>
> When i start kylin4.0,the kylin.log write:
> 2021-11-24 03:09:21,660 ERROR [KylinServerTracker-0]
> cache.PathChildrenCache:571 :
> java.lang.IllegalStateException: instance must be started before calling this
> method
> at
> org.apache.curator.shaded.com.google.common.base.Preconditions.checkState(Preconditions.java:176)
> at
> org.apache.curator.framework.imps.CuratorFrameworkImpl.getChildren(CuratorFrameworkImpl.java:391)
> at
> org.apache.curator.framework.recipes.cache.PathChildrenCache.refresh(PathChildrenCache.java:508)
> at
> org.apache.curator.framework.recipes.cache.RefreshOperation.invoke(RefreshOperation.java:35)
> at
> org.apache.curator.framework.recipes.cache.PathChildrenCache$9.run(PathChildrenCache.java:773)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> 2021-11-24 03:09:21,662 INFO [Thread-5] zookeeper.ZooKeeper:693 : Session:
> 0x1000003da3a000f closed
> 2021-11-24 03:09:21,662 INFO [localhost-startStop-1-EventThread]
> zookeeper.ClientCnxn:522 : EventThread shut down for session:
> 0x1000003da3a000f
> 2021-11-24 03:09:21,667 INFO [Thread-5] curator.CuratorLeaderSelector:95 :
> ip-kylinlocalhost:7070 is stopped
> 2021-11-24 03:09:21,667 ERROR [Curator-LeaderSelector-0]
> curator.CuratorLeaderSelector:107 : ip-kylinlocalhost:7070 was interrupted.
> java.lang.InterruptedException: sleep interrupted
> at java.lang.Thread.sleep(Native Method)
> at
> org.apache.kylin.job.impl.curator.CuratorLeaderSelector.takeLeadership(CuratorLeaderSelector.java:104)
> at
> org.apache.curator.framework.recipes.leader.LeaderSelector$WrappedListener.takeLeadership(LeaderSelector.java:559)
> at
> org.apache.curator.framework.recipes.leader.LeaderSelector.doWork(LeaderSelector.java:421)
> at
> org.apache.curator.framework.recipes.leader.LeaderSelector.doWorkLoop(LeaderSelector.java:466)
> at
> org.apache.curator.framework.recipes.leader.LeaderSelector.access$100(LeaderSelector.java:65)
> at
> org.apache.curator.framework.recipes.leader.LeaderSelector$2.call(LeaderSelector.java:246)
> at
> org.apache.curator.framework.recipes.leader.LeaderSelector$2.call(LeaderSelector.java:240)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
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