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via Apache's JIRA Issue Tracker by Stephan Ewen, 1 year ago
instance must be started before calling this method
java.lang.IllegalStateException: instance must be started before calling this method	at org.apache.flink.shaded.com.google.common.base.Preconditions.checkState(Preconditions.java:173)	at org.apache.curator.framework.imps.CuratorFrameworkImpl.getChildren(CuratorFrameworkImpl.java:379)	at org.apache.curator.framework.recipes.cache.PathChildrenCache.refresh(PathChildrenCache.java:502)	at org.apache.curator.framework.recipes.cache.RefreshOperation.invoke(RefreshOperation.java:35)	at org.apache.curator.framework.recipes.cache.PathChildrenCache$9.run(PathChildrenCache.java:759)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)	at java.util.concurrent.FutureTask.run(FutureTask.java:262)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)	at java.util.concurrent.FutureTask.run(FutureTask.java:262)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	at java.lang.Thread.run(Thread.java:745)