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ASF GitHub Bot commented on FLINK-9356: --------------------------------------- Github user yanghua commented on the issue: https://github.com/apache/flink/pull/6028 cc @kl0u @zentol > Improve error message for when queryable state not ready / reachable > -------------------------------------------------------------------- > > Key: FLINK-9356 > URL: https://issues.apache.org/jira/browse/FLINK-9356 > Project: Flink > Issue Type: Improvement > Components: Queryable State > Affects Versions: 1.5.0 > Reporter: Florian Schmidt > Assignee: vinoyang > Priority: Major > > When executing the queryable state client and either > a. The queryable state is not ready > b. There is no job with the specified job-id > > one sees the following exception: > > {code:java} > Exception in thread "main" java.util.concurrent.ExecutionException: > java.lang.RuntimeException: Failed request 0. > Caused by: > org.apache.flink.queryablestate.exceptions.UnknownLocationException: Could > not contact the state location oracle to retrieve the state location. > at > org.apache.flink.queryablestate.client.proxy.KvStateClientProxyHandler.getKvStateLookupInfo(KvStateClientProxyHandler.java:228) > at > org.apache.flink.queryablestate.client.proxy.KvStateClientProxyHandler.getState(KvStateClientProxyHandler.java:162) > at > org.apache.flink.queryablestate.client.proxy.KvStateClientProxyHandler.executeActionAsync(KvStateClientProxyHandler.java:129) > at > org.apache.flink.queryablestate.client.proxy.KvStateClientProxyHandler.handleRequest(KvStateClientProxyHandler.java:119) > at > org.apache.flink.queryablestate.client.proxy.KvStateClientProxyHandler.handleRequest(KvStateClientProxyHandler.java:63) > at > org.apache.flink.queryablestate.network.AbstractServerHandler$AsyncRequestTask.run(AbstractServerHandler.java:236) > at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > at java.util.concurrent.FutureTask.run(FutureTask.java:266) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:748) > at > java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357) > at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895) > at > org.apache.flink.streaming.tests.queryablestate.QsStateClient.getMapState(QsStateClient.java:122) > at > org.apache.flink.streaming.tests.queryablestate.QsStateClient.main(QsStateClient.java:75) > Caused by: java.lang.RuntimeException: Failed request 0. > Caused by: > org.apache.flink.queryablestate.exceptions.UnknownLocationException: Could > not contact the state location oracle to retrieve the state location. > at > org.apache.flink.queryablestate.client.proxy.KvStateClientProxyHandler.getKvStateLookupInfo(KvStateClientProxyHandler.java:228) > at > org.apache.flink.queryablestate.client.proxy.KvStateClientProxyHandler.getState(KvStateClientProxyHandler.java:162) > at > org.apache.flink.queryablestate.client.proxy.KvStateClientProxyHandler.executeActionAsync(KvStateClientProxyHandler.java:129) > at > org.apache.flink.queryablestate.client.proxy.KvStateClientProxyHandler.handleRequest(KvStateClientProxyHandler.java:119) > at > org.apache.flink.queryablestate.client.proxy.KvStateClientProxyHandler.handleRequest(KvStateClientProxyHandler.java:63) > at > org.apache.flink.queryablestate.network.AbstractServerHandler$AsyncRequestTask.run(AbstractServerHandler.java:236) > at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > at java.util.concurrent.FutureTask.run(FutureTask.java:266) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:748) > at > org.apache.flink.queryablestate.network.AbstractServerHandler$AsyncRequestTask.lambda$run$0(AbstractServerHandler.java:273) > at > java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760) > at > java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736) > at > java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474) > at > java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1977) > at > org.apache.flink.queryablestate.client.proxy.KvStateClientProxyHandler.lambda$executeActionAsync$0(KvStateClientProxyHandler.java:146) > at > java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760) > at > java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736) > at > java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:442) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) > at java.lang.Thread.run(Thread.java:748) > > {code} > > This could be improved to display a context-dependant error message, so one > can more easily identify why the connection to queryable state is not > possible at the time > > cc [~kkl0u] -- This message was sent by Atlassian JIRA (v7.6.3#76005)