swuferhong commented on issue #2086:
URL: https://github.com/apache/fluss/issues/2086#issuecomment-3606308063
another case:
```
2025-12-03 18:11:39:
java.util.concurrent.CompletionException:
org.apache.fluss.exception.NetworkException:
org.apache.fluss.exception.DisconnectException: Cannot send request to server
xxx:9123 (id: ts-2, rack: null) because it is disconnected.
at
java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:331)
at
java.base/java.util.concurrent.CompletableFuture.uniApplyNow(CompletableFuture.java:670)
at
java.base/java.util.concurrent.CompletableFuture.uniApplyStage(CompletableFuture.java:658)
at
java.base/java.util.concurrent.CompletableFuture.thenApply(CompletableFuture.java:2100)
at
org.apache.fluss.client.admin.FlussAdmin.getTableInfo(FlussAdmin.java:264)
at
org.apache.fluss.client.FlussConnection.getTable(FlussConnection.java:106)
at
org.apache.fluss.flink.source.lookup.FlinkAsyncLookupFunction.open(FlinkAsyncLookupFunction.java:90)
at
org.apache.flink.table.runtime.functions.table.lookup.CachingAsyncLookupFunction.open(CachingAsyncLookupFunction.java:82)
at LookupFunction$1.open(Unknown Source)
at
org.apache.flink.api.common.functions.RichFunction.open(RichFunction.java:119)
at
org.apache.flink.api.common.functions.util.FunctionUtils.openFunction(FunctionUtils.java:34)
at
org.apache.flink.table.runtime.operators.join.lookup.AsyncLookupJoinRunner.open(AsyncLookupJoinRunner.java:101)
at
org.apache.flink.api.common.functions.util.FunctionUtils.openFunction(FunctionUtils.java:34)
at
org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.open(AbstractUdfStreamOperator.java:102)
at
org.apache.flink.streaming.api.operators.async.AsyncWaitOperator.open(AsyncWaitOperator.java:214)
at
org.apache.flink.table.runtime.operators.TableAsyncWaitOperator.open(TableAsyncWaitOperator.java:67)
at
org.apache.flink.streaming.runtime.tasks.RegularOperatorChain.initializeStateAndOpenOperators(RegularOperatorChain.java:107)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.restoreStateAndGates(StreamTask.java:963)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$restoreInternal$5(StreamTask.java:890)
at
org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$1.call(StreamTaskActionExecutor.java:55)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.restoreInternal(StreamTask.java:890)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.restore(StreamTask.java:839)
at
org.apache.flink.runtime.taskmanager.Task.runWithSystemExitMonitoring(Task.java:976)
at
org.apache.flink.runtime.taskmanager.Task.restoreAndInvoke(Task.java:945)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:768)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:580)
at java.base/java.lang.Thread.run(Thread.java:991)
Caused by: org.apache.fluss.exception.NetworkException:
org.apache.fluss.exception.DisconnectException: Cannot send request to server
xxx:9123 (id: ts-2, rack: null) because it is disconnected.
Caused by: org.apache.fluss.exception.DisconnectException: Cannot send
request to server xxx:9123 (id: ts-2, rack: null) because it is disconnected.
```
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