Native K8S Jobmanager restarts and job never recovers
Locked
 
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Hi all, In our 1.11.1 native k8s session after we submit a job it will run successfully for a few hours then fail when the jobmanager pod restarts. Relevant logs after restart are attached below. Any suggestions? Best kevin 2020-08-06 21:50:24,425 INFO org.apache.flink.kubernetes.KubernetesResourceManager [] - Recovered 32 pods from previous attempts, current attempt id is 2. 2020-08-06 21:50:24,610 DEBUG org.apache.flink.kubernetes.kubeclient.resources.KubernetesPodsWatcher [] - Received ADDED event for pod REDACTED-flink-session-taskmanager-1-16, details: PodStatus(conditions=[PodCondition(lastProbeTime=null,
lastTransitionTime=2020-08-06T18:48:33Z, message=null, reason=null, status=True, type=Initialized, additionalProperties={}), PodCondition(lastProbeTime=null, lastTransitionTime=2020-08-06T18:48:37Z, message=null, reason=null, status=True, type=Ready, additionalProperties={}),
PodCondition(lastProbeTime=null, lastTransitionTime=2020-08-06T18:48:37Z, message=null, reason=null, status=True, type=ContainersReady, additionalProperties={}), PodCondition(lastProbeTime=null, lastTransitionTime=2020-08-06T18:48:33Z, message=null, reason=null,
status=True, type=PodScheduled, additionalProperties={})], containerStatuses=[ContainerStatus(containerID=docker://REDACTED, image=REDACTED/flink:1.11.1-scala_2.11-s3-0, imageID=docker-pullable://REDACTED/flink@sha256:REDACTED, lastState=ContainerState(running=null,
terminated=null, waiting=null, additionalProperties={}), name=flink-task-manager, ready=true, restartCount=0, started=true, state=ContainerState(running=ContainerStateRunning(startedAt=2020-08-06T18:48:35Z, additionalProperties={}), terminated=null, waiting=null,
additionalProperties={}), additionalProperties={})], ephemeralContainerStatuses=[], hostIP=REDACTED, initContainerStatuses=[], message=null, nominatedNodeName=null, phase=Running, podIP=REDACTED, podIPs=[PodIP(ip=REDACTED, additionalProperties={})], qosClass=Guaranteed,
reason=null, startTime=2020-08-06T18:48:33Z, additionalProperties={}) 2020-08-06 21:50:24,613 DEBUG org.apache.flink.kubernetes.KubernetesResourceManager [] - Ignore TaskManager pod that is already added: REDACTED-flink-session-taskmanager-1-16 2020-08-06 21:50:24,615 INFO org.apache.flink.kubernetes.KubernetesResourceManager [] - Received 0 new TaskManager pods. Remaining pending pod requests: 0 2020-08-06 21:50:24,631 DEBUG org.apache.flink.runtime.dispatcher.FileArchivedExecutionGraphStore [] - Could not load archived execution graph for job id 8c76f37962afd87783c65c95387fb828. java.util.concurrent.ExecutionException: java.io.FileNotFoundException: Could not find file for archived execution graph 8c76f37962afd87783c65c95387fb828. This indicates that the file either has been deleted
or never written. at org.apache.flink.shaded.guava18.com.google.common.util.concurrent.AbstractFuture$Sync.getValue(AbstractFuture.java:299) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.shaded.guava18.com.google.common.util.concurrent.AbstractFuture$Sync.get(AbstractFuture.java:286) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.shaded.guava18.com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:116) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.shaded.guava18.com.google.common.util.concurrent.Uninterruptibles.getUninterruptibly(Uninterruptibles.java:137) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$Segment.getAndRecordStats(LocalCache.java:2348) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2320) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2282) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2197) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache.get(LocalCache.java:3937) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3941) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4824) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.runtime.dispatcher.FileArchivedExecutionGraphStore.get(FileArchivedExecutionGraphStore.java:143) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.runtime.dispatcher.Dispatcher.lambda$requestJob$20(Dispatcher.java:554) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at java.util.concurrent.CompletableFuture.uniExceptionally(CompletableFuture.java:884) ~[?:1.8.0_262] at java.util.concurrent.CompletableFuture.uniExceptionallyStage(CompletableFuture.java:898) ~[?:1.8.0_262] at java.util.concurrent.CompletableFuture.exceptionally(CompletableFuture.java:2209) ~[?:1.8.0_262] at org.apache.flink.runtime.dispatcher.Dispatcher.requestJob(Dispatcher.java:552) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_262] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_262] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_262] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_262] at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcInvocation(AkkaRpcActor.java:284) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:199) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleRpcMessage(FencedAkkaRpcActor.java:74) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleMessage(AkkaRpcActor.java:152) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:26) [flink-dist_2.11-1.11.1.jar:1.11.1] at akka.japi.pf.UnitCaseStatement.apply(CaseStatements.scala:21) [flink-dist_2.11-1.11.1.jar:1.11.1] at scala.PartialFunction$class.applyOrElse(PartialFunction.scala:123) [flink-dist_2.11-1.11.1.jar:1.11.1] at akka.japi.pf.UnitCaseStatement.applyOrElse(CaseStatements.scala:21) [flink-dist_2.11-1.11.1.jar:1.11.1] at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:170) [flink-dist_2.11-1.11.1.jar:1.11.1] at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171) [flink-dist_2.11-1.11.1.jar:1.11.1] at scala.PartialFunction$OrElse.applyOrElse(PartialFunction.scala:171) [flink-dist_2.11-1.11.1.jar:1.11.1] at akka.actor.Actor$class.aroundReceive(Actor.scala:517) [flink-dist_2.11-1.11.1.jar:1.11.1] at akka.actor.AbstractActor.aroundReceive(AbstractActor.scala:225) [flink-dist_2.11-1.11.1.jar:1.11.1] at akka.actor.ActorCell.receiveMessage(ActorCell.scala:592) [flink-dist_2.11-1.11.1.jar:1.11.1] at akka.actor.ActorCell.invoke(ActorCell.scala:561) [flink-dist_2.11-1.11.1.jar:1.11.1] at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:258) [flink-dist_2.11-1.11.1.jar:1.11.1] at akka.dispatch.Mailbox.run(Mailbox.scala:225) [flink-dist_2.11-1.11.1.jar:1.11.1] at akka.dispatch.Mailbox.exec(Mailbox.scala:235) [flink-dist_2.11-1.11.1.jar:1.11.1] at akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) [flink-dist_2.11-1.11.1.jar:1.11.1] at akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) [flink-dist_2.11-1.11.1.jar:1.11.1] at akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) [flink-dist_2.11-1.11.1.jar:1.11.1] at akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) [flink-dist_2.11-1.11.1.jar:1.11.1] Caused by: java.io.FileNotFoundException: Could not find file for archived execution graph 8c76f37962afd87783c65c95387fb828. This indicates that the file either has been deleted or never written. at org.apache.flink.runtime.dispatcher.FileArchivedExecutionGraphStore.loadExecutionGraph(FileArchivedExecutionGraphStore.java:239) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.runtime.dispatcher.FileArchivedExecutionGraphStore.access$000(FileArchivedExecutionGraphStore.java:63) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.runtime.dispatcher.FileArchivedExecutionGraphStore$1.load(FileArchivedExecutionGraphStore.java:118) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.runtime.dispatcher.FileArchivedExecutionGraphStore$1.load(FileArchivedExecutionGraphStore.java:115) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3527) ~[flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.shaded.guava18.com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2319) ~[flink-dist_2.11-1.11.1.jar:1.11.1] ... 37 more 2020-08-06 21:50:55,824 DEBUG org.apache.flink.kubernetes.KubernetesResourceManager [] - Ignoring outdated TaskExecutorGateway connection for REDACTED-flink-session-taskmanager-1-16. 2020-08-06 21:50:56,519 INFO org.apache.flink.kubernetes.KubernetesResourceManager [] - Registering TaskManager with ResourceID REDACTED-flink-session-taskmanager-1-16 (akka.tcp://flink@REDACTED:6122/user/rpc/taskmanager_0)
at ResourceManager 2020-08-06 21:50:56,613 DEBUG org.apache.flink.runtime.resourcemanager.slotmanager.SlotManagerImpl [] - Registering TaskManager REDACTED-flink-session-taskmanager-1-16 under 89c651cee3d3f4f92b1c9472a9ec4507
at the SlotManager. 2020-08-06 21:50:55,823 DEBUG org.apache.flink.runtime.rpc.akka.AkkaRpcService [] - Try to connect to remote RPC endpoint with address akka.tcp://flink@REDACTED:6122/user/rpc/taskmanager_0. Returning
a org.apache.flink.runtime.taskexecutor.TaskExecutorGateway gateway. |
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Hi Kevin, I think you may not set the high availability configurations in your native K8s session. Currently, we only support zookeeper HA, so you need to add the following configuration. After the HA is configured, the running job, checkpoint and other meta could be stored. When the jobmanager failover, all the jobs could be recovered then. I have tested it could work properly. high-availability: zookeeper high-availability.zookeeper.quorum: zk-client:2181 high-availability.storageDir: hdfs:///flink/recovery I know you may not have a zookeeper cluster.You could a zookeeper K8s operator[1] to deploy a new one. More over, it is not very convenient to use zookeeper as HA. So a K8s native HA support[2] is in plan and we are trying to finish it in the next major release cycle(1.12). Best, Yang Bohinski, Kevin <[hidden email]> 于2020年8月7日周五 下午11:40写道：
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Hi Got the logs on crash, hopefully they help. 2020-08-13 22:00:40,336 ERROR org.apache.flink.kubernetes.KubernetesResourceManager [] - Fatal error occurred in ResourceManager. io.fabric8.kubernetes.client.KubernetesClientException: too old resource version: 8617182 (8633230) at io.fabric8.kubernetes.client.dsl.internal.WatchConnectionManager$1.onMessage(WatchConnectionManager.java:259) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.RealWebSocket.onReadMessage(RealWebSocket.java:323) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.WebSocketReader.readMessageFrame(WebSocketReader.java:219) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.WebSocketReader.processNextFrame(WebSocketReader.java:105) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.RealWebSocket.loopReader(RealWebSocket.java:274) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.RealWebSocket$2.onResponse(RealWebSocket.java:214) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.RealCall$AsyncCall.execute(RealCall.java:206) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32) [flink-dist_2.11-1.11.1.jar:1.11.1] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_262] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_262] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_262] 2020-08-13 22:00:40,337 ERROR org.apache.flink.runtime.entrypoint.ClusterEntrypoint [] - Fatal error occurred in the cluster entrypoint. io.fabric8.kubernetes.client.KubernetesClientException: too old resource version: 8617182 (8633230) at io.fabric8.kubernetes.client.dsl.internal.WatchConnectionManager$1.onMessage(WatchConnectionManager.java:259) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.RealWebSocket.onReadMessage(RealWebSocket.java:323) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.WebSocketReader.readMessageFrame(WebSocketReader.java:219) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.WebSocketReader.processNextFrame(WebSocketReader.java:105) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.RealWebSocket.loopReader(RealWebSocket.java:274) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.RealWebSocket$2.onResponse(RealWebSocket.java:214) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.RealCall$AsyncCall.execute(RealCall.java:206) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32) [flink-dist_2.11-1.11.1.jar:1.11.1] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_262] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_262] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_262] 2020-08-13 22:00:40,416 INFO org.apache.flink.runtime.blob.BlobServer [] - Stopped BLOB server at 0.0.0.0:6124 Best, kevin From: Yang Wang <[hidden email]> Hi Kevin, I think you may not set the high availability configurations in your native K8s session. Currently, we only support zookeeper HA, so you need to add the following configuration. After the HA is configured, the running job, checkpoint and other meta could be stored. When the jobmanager failover, all the jobs could be recovered then. I have tested it could work properly. high-availability: zookeeper
high-availability.zookeeper.quorum: zk-client:2181
high-availability.storageDir: hdfs:///flink/recovery
I know you may not have a zookeeper cluster.You could a zookeeper K8s operator[1] to deploy a new one. More over, it is not very convenient to use zookeeper as HA. So a K8s native HA support[2] is in plan and we are trying to finish it in the next major release cycle(1.12). Best, Yang Bohinski, Kevin <[hidden email]>
于2020年8月7日周五
下午11:40写道：
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Might be useful https://stackoverflow.com/a/61437982 Best, kevin From: "Bohinski, Kevin" <[hidden email]> Hi Got the logs on crash, hopefully they help. 2020-08-13 22:00:40,336 ERROR org.apache.flink.kubernetes.KubernetesResourceManager [] - Fatal error occurred in ResourceManager. io.fabric8.kubernetes.client.KubernetesClientException: too old resource version: 8617182 (8633230) at io.fabric8.kubernetes.client.dsl.internal.WatchConnectionManager$1.onMessage(WatchConnectionManager.java:259) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.RealWebSocket.onReadMessage(RealWebSocket.java:323) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.WebSocketReader.readMessageFrame(WebSocketReader.java:219) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.WebSocketReader.processNextFrame(WebSocketReader.java:105) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.RealWebSocket.loopReader(RealWebSocket.java:274) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.RealWebSocket$2.onResponse(RealWebSocket.java:214) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.RealCall$AsyncCall.execute(RealCall.java:206) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32) [flink-dist_2.11-1.11.1.jar:1.11.1] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_262] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_262] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_262] 2020-08-13 22:00:40,337 ERROR org.apache.flink.runtime.entrypoint.ClusterEntrypoint [] - Fatal error occurred in the cluster entrypoint. io.fabric8.kubernetes.client.KubernetesClientException: too old resource version: 8617182 (8633230) at io.fabric8.kubernetes.client.dsl.internal.WatchConnectionManager$1.onMessage(WatchConnectionManager.java:259) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.RealWebSocket.onReadMessage(RealWebSocket.java:323) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.WebSocketReader.readMessageFrame(WebSocketReader.java:219) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.WebSocketReader.processNextFrame(WebSocketReader.java:105) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.RealWebSocket.loopReader(RealWebSocket.java:274) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.ws.RealWebSocket$2.onResponse(RealWebSocket.java:214) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.RealCall$AsyncCall.execute(RealCall.java:206) [flink-dist_2.11-1.11.1.jar:1.11.1] at org.apache.flink.kubernetes.shaded.okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32) [flink-dist_2.11-1.11.1.jar:1.11.1] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_262] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_262] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_262] 2020-08-13 22:00:40,416 INFO org.apache.flink.runtime.blob.BlobServer [] - Stopped BLOB server at 0.0.0.0:6124 Best, kevin From: Yang Wang <[hidden email]> Hi Kevin, I think you may not set the high availability configurations in your native K8s session. Currently, we only support zookeeper HA, so you need to add the following configuration. After the HA is configured, the running job, checkpoint and other meta could be stored. When the jobmanager failover, all the jobs could be recovered then. I have tested it could work properly. high-availability: zookeeper high-availability.zookeeper.quorum: zk-client:2181 high-availability.storageDir: hdfs:///flink/recovery I know you may not have a zookeeper cluster.You could a zookeeper K8s operator[1] to deploy a new one. More over, it is not very convenient to use zookeeper as HA. So a K8s native HA support[2] is in plan and we are trying to finish it in the next major release cycle(1.12). Best, Yang Bohinski, Kevin <[hidden email]>
于2020年8月7日周五
下午11:40写道：
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Hi kevin, Thanks for sharing more information. You are right. Actually, "too old resource version" is caused by a bug of fabric8 kubernetes-client[1]. It has been fix in v4.6.1. And we have bumped the kubernetes-client version to v4.9.2 in Flink release-1.11. Also it has been backported to release 1.10 and will be included in the next minor release version(1.10.2). BTW, if you really want all your jobs recovered when jobmanager crashed, you still need to configure the Zookeeper high availability. Best, Yang Bohinski, Kevin <[hidden email]> 于2020年8月14日周五 上午6:32写道：
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