Re: [External] : Re: StopWithSavepoint() method doesn't work in Java based flink native k8s operator
Hello All, I have solved the problem. Just in case someone need a reference in the future. I will share my problem solution here. Problem 1: Log issue Flink 1.12 have changed the default log4j configuration file name from log4j.properties to log4j-console.properties. From the operator’s perspective, the operator pods’s /opt/flink/conf directory must contain log4j-console.properties to enable logging to function properly. Log4j.properties won’t be recognized. Problem 2: stopWithSavepoint doesn’t work issue and Flink CLI stop/cancel/savepoint command doesn’t work with native Kubernetes. For the CLI commands, I should add �Ctarget=Kubernetes-application -Dkubernetes.cluster-id= to all application mode Flink CLI commands to make it work. For stop/cancel/savepoint command, I was directly following the doc here [1] without adding those configurations parameters. Flink documentation doesn’t point out explicitly and I was kind of confused here earlier. Maybe the doc can add a note here to be more informative? For stop command not working with my code issue, it was due to my Kafka-client is too low. I was using Kafka-client 1.1.0 (a very old version) and it works okay with my flink application. Because of the log issue, I didn’t managed to notice such error earlier. Actually, I got such an error during executing stop command. java.util.concurrent.ExecutionException: java.lang.NoSuchMethodError: 'void org.apache.kafka.clients.producer.KafkaProducer.close(java.time.Duration)' Stop command introduces some better semantic for restart a job and it calls this method in the Flink application. A low version of Kafka client will run into failure. Cancel command will not have such an issue. I didn’t look deep into the source code implementation for this, maybe you can share more insights about this. [1] https://ci.apache.org/projects/flink/flink-docs-release-1.13/docs/deployment/cli/ Thanks, Fuyao From: Yang Wang Date: Friday, May 7, 2021 at 20:45 To: Fuyao Li Cc: Austin Cawley-Edwards , matth...@ververica.com , user Subject: Re: [External] : Re: StopWithSavepoint() method doesn't work in Java based flink native k8s operator Since your problem is about the flink-native-k8s-operator, let's move the discussion there. Best, Yang Fuyao Li mailto:fuyao...@oracle.com>> 于2021年5月8日周六 上午5:41写道： Hi Austin, Yang, Matthias, I am following up to see if you guys have any idea regarding this problem. I also created an issue here to describe the problem. [1] After looking into the source code[1], I believe for native k8s, three configuration files should be added to the flink-config- configmap automatically. However, it just have the flink-conf.yaml in the operator created flink application. And that is also causing the start command difference mentioned in the issue. Native k8s using Flink CLI: Args: native-k8s $JAVA_HOME/bin/java -classpath $FLINK_CLASSPATH -Xmx1073741824 -Xms1073741824 -XX:MaxMetaspaceSize=268435456 -Dlog.file=/opt/flink/log/jobmanager.log -Dlogback.configurationFile=file:/opt/flink/conf/logback-console.xml -Dlog4j.configuration=file:/opt/flink/conf/log4j-console.properties -Dlog4j.configurationFile=file:/opt/flink/conf/log4j-console.properties org.apache.flink.kubernetes.entrypoint.KubernetesApplicationClusterEntrypoint -D jobmanager.memory.off-heap.size=134217728b -D jobmanager.memory.jvm-overhead.min=201326592b -D jobmanager.memory.jvm-metaspace.size=268435456b -D jobmanager.memory.heap.size=1073741824b -D jobmanager.memory.jvm-overhead.max=201326592b Operator flink app: Args: native-k8s $JAVA_HOME/bin/java -classpath $FLINK_CLASSPATH -Xmx3462817376 -Xms3462817376 -XX:MaxMetaspaceSize=268435456 org.apache.flink.kubernetes.entrypoint.KubernetesApplicationClusterEntrypoint -D jobmanager.memory.off-heap.size=134217728b -D jobmanager.memory.jvm-overhead.min=429496736b -D jobmanager.memory.jvm-metaspace.size=268435456b -D jobmanager.memory.heap.size=3462817376b -D jobmanager.memory.jvm-overhead.max=429496736b Please share your opinion on this. Thanks! [1] https://github.com/wangyang0918/flink-native-k8s-operator/issues/4<https://urldefense.com/v3/__https:/github.com/wangyang0918/flink-native-k8s-operator/issues/4__;!!GqivPVa7Brio!Kic66xJyvdUvhTTsvM8QZXyYZYUhVLI_tUdwbipnafqSDd7kF4wQn5taaZWaOoA$> [2] https://github.com/apache/flink/blob/release-1.12/flink-kubernetes/src/main/java/org/apache/flink/kubernetes/kubeclient/decorators/FlinkConfMountDecorator.java<https://urldefense.com/v3/__https:/github.com/apache/flink/blob/release-1.12/flink-kubernetes/src/main/java/org/apache/flink/kubernetes/kubeclient/decorators/FlinkConfMountDecorator.java__;!!GqivPVa7Brio!Kic66xJyvdUvhTTsvM8QZXyYZYUhVLI_tUdwbipnafqSDd7kF4wQn5taji-Q22E$> Have a good weekend! Best, Fuyao From: Fuyao Li mailto:fuyao...@oracle.com>> Date: Tuesday, May 4, 2021 at 19:52 To: Austin Cawley-Edwards mailto:austin.caw...@gmail.com>
Re: [External] : Re: StopWithSavepoint() method doesn't work in Java based flink native k8s operator
Since your problem is about the flink-native-k8s-operator, let's move the discussion there. Best, Yang Fuyao Li 于2021年5月8日周六 上午5:41写道： > Hi Austin, Yang, Matthias, > > > > I am following up to see if you guys have any idea regarding this problem. > > > > I also created an issue here to describe the problem. [1] > > > > After looking into the source code[1], I believe for native k8s, three > configuration files should be added to the flink-config- > configmap automatically. However, it just have the flink-conf.yaml in the > operator created flink application. And that is also causing the start > command difference mentioned in the issue. > > > > Native k8s using Flink CLI: Args: > native-k8s > $JAVA_HOME/bin/java -classpath $FLINK_CLASSPATH -Xmx1073741824 > -Xms1073741824 -XX:MaxMetaspaceSize=268435456 > -Dlog.file=/opt/flink/log/jobmanager.log > -Dlogback.configurationFile=file:/opt/flink/conf/logback-console.xml > -Dlog4j.configuration=file:/opt/flink/conf/log4j-console.properties > -Dlog4j.configurationFile=file:/opt/flink/conf/log4j-console.properties > org.apache.flink.kubernetes.entrypoint.KubernetesApplicationClusterEntrypoint > -D jobmanager.memory.off-heap.size=134217728b -D > jobmanager.memory.jvm-overhead.min=201326592b -D > jobmanager.memory.jvm-metaspace.size=268435456b -D > jobmanager.memory.heap.size=1073741824b -D > jobmanager.memory.jvm-overhead.max=201326592b > > > > > > Operator flink app: > > Args: > native-k8s > $JAVA_HOME/bin/java -classpath $FLINK_CLASSPATH -Xmx3462817376 > -Xms3462817376 -XX:MaxMetaspaceSize=268435456 > org.apache.flink.kubernetes.entrypoint.KubernetesApplicationClusterEntrypoint > -D jobmanager.memory.off-heap.size=134217728b -D > jobmanager.memory.jvm-overhead.min=429496736b -D > jobmanager.memory.jvm-metaspace.size=268435456b -D > jobmanager.memory.heap.size=3462817376b -D > jobmanager.memory.jvm-overhead.max=429496736b > > > > Please share your opinion on this. Thanks! > > > > [1] https://github.com/wangyang0918/flink-native-k8s-operator/issues/4 > > [2] > https://github.com/apache/flink/blob/release-1.12/flink-kubernetes/src/main/java/org/apache/flink/kubernetes/kubeclient/decorators/FlinkConfMountDecorator.java > > > > Have a good weekend! > > Best, > > Fuyao > > > > > > *From: *Fuyao Li > *Date: *Tuesday, May 4, 2021 at 19:52 > *To: *Austin Cawley-Edwards , > matth...@ververica.com , Yang Wang < > danrtsey...@gmail.com> > *Cc: *user > *Subject: *Re: [External] : Re: StopWithSavepoint() method doesn't work > in Java based flink native k8s operator > > Hello All, > > > > I also checked the native-k8s’s automatically generated configmap. It only > contains the flink-conf.yaml, but no log4j.properties. I am not very > familiar with the implementation details behind native k8s. > > > > That should be the root cause, could you check the implementation and help > me to locate the potential problem. > > Yang’s initial code: > https://github.com/wangyang0918/flink-native-k8s-operator/blob/master/src/main/java/org/apache/flink/kubernetes/operator/controller/FlinkApplicationController.java > <https://urldefense.com/v3/__https:/github.com/wangyang0918/flink-native-k8s-operator/blob/master/src/main/java/org/apache/flink/kubernetes/operator/controller/FlinkApplicationController.java__;!!GqivPVa7Brio!K_YcBE0y2rd7zQtMtIKmSNNUpMmUTUSA8VdkNCJ8i9w2tH2nwNWoq3j7UZwZEh4$> > > My modified version: > https://github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/src/main/java/org/apache/flink/kubernetes/operator/controller/FlinkApplicationController.java > <https://urldefense.com/v3/__https:/github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/src/main/java/org/apache/flink/kubernetes/operator/controller/FlinkApplicationController.java__;!!GqivPVa7Brio!K_YcBE0y2rd7zQtMtIKmSNNUpMmUTUSA8VdkNCJ8i9w2tH2nwNWoq3j78oKszhY$> > > > > Thank you so much. > > > > Best, > > Fuyao > > > > *From: *Fuyao Li > *Date: *Tuesday, May 4, 2021 at 19:34 > *To: *Austin Cawley-Edwards , > matth...@ververica.com , Yang Wang < > danrtsey...@gmail.com> > *Cc: *user > *Subject: *Re: [External] : Re: StopWithSavepoint() method doesn't work > in Java based flink native k8s operator > > Hello Austin, Yang, > > > > For the logging issue, I think I have found something worth to notice. > > > > They are all based on base image flink:1.12.1-scala_2.11-java11 > > > > Dockerfile: https://pastebin.ubuntu.com/p/JTsHygsTP6/ > <https://urldefense.com/v3/__https:/pastebin.ubuntu.com/p/JTsHygsTP6/__;!!GqivPVa7Br
Re: [External] : Re: StopWithSavepoint() method doesn't work in Java based flink native k8s operator
Hi Austin, Yang, Matthias, I am following up to see if you guys have any idea regarding this problem. I also created an issue here to describe the problem. [1] After looking into the source code[1], I believe for native k8s, three configuration files should be added to the flink-config- configmap automatically. However, it just have the flink-conf.yaml in the operator created flink application. And that is also causing the start command difference mentioned in the issue. Native k8s using Flink CLI: Args: native-k8s $JAVA_HOME/bin/java -classpath $FLINK_CLASSPATH -Xmx1073741824 -Xms1073741824 -XX:MaxMetaspaceSize=268435456 -Dlog.file=/opt/flink/log/jobmanager.log -Dlogback.configurationFile=file:/opt/flink/conf/logback-console.xml -Dlog4j.configuration=file:/opt/flink/conf/log4j-console.properties -Dlog4j.configurationFile=file:/opt/flink/conf/log4j-console.properties org.apache.flink.kubernetes.entrypoint.KubernetesApplicationClusterEntrypoint -D jobmanager.memory.off-heap.size=134217728b -D jobmanager.memory.jvm-overhead.min=201326592b -D jobmanager.memory.jvm-metaspace.size=268435456b -D jobmanager.memory.heap.size=1073741824b -D jobmanager.memory.jvm-overhead.max=201326592b Operator flink app: Args: native-k8s $JAVA_HOME/bin/java -classpath $FLINK_CLASSPATH -Xmx3462817376 -Xms3462817376 -XX:MaxMetaspaceSize=268435456 org.apache.flink.kubernetes.entrypoint.KubernetesApplicationClusterEntrypoint -D jobmanager.memory.off-heap.size=134217728b -D jobmanager.memory.jvm-overhead.min=429496736b -D jobmanager.memory.jvm-metaspace.size=268435456b -D jobmanager.memory.heap.size=3462817376b -D jobmanager.memory.jvm-overhead.max=429496736b Please share your opinion on this. Thanks! [1] https://github.com/wangyang0918/flink-native-k8s-operator/issues/4 [2] https://github.com/apache/flink/blob/release-1.12/flink-kubernetes/src/main/java/org/apache/flink/kubernetes/kubeclient/decorators/FlinkConfMountDecorator.java Have a good weekend! Best, Fuyao From: Fuyao Li Date: Tuesday, May 4, 2021 at 19:52 To: Austin Cawley-Edwards , matth...@ververica.com , Yang Wang Cc: user Subject: Re: [External] : Re: StopWithSavepoint() method doesn't work in Java based flink native k8s operator Hello All, I also checked the native-k8s’s automatically generated configmap. It only contains the flink-conf.yaml, but no log4j.properties. I am not very familiar with the implementation details behind native k8s. That should be the root cause, could you check the implementation and help me to locate the potential problem. Yang’s initial code: https://github.com/wangyang0918/flink-native-k8s-operator/blob/master/src/main/java/org/apache/flink/kubernetes/operator/controller/FlinkApplicationController.java<https://urldefense.com/v3/__https:/github.com/wangyang0918/flink-native-k8s-operator/blob/master/src/main/java/org/apache/flink/kubernetes/operator/controller/FlinkApplicationController.java__;!!GqivPVa7Brio!K_YcBE0y2rd7zQtMtIKmSNNUpMmUTUSA8VdkNCJ8i9w2tH2nwNWoq3j7UZwZEh4$> My modified version: https://github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/src/main/java/org/apache/flink/kubernetes/operator/controller/FlinkApplicationController.java<https://urldefense.com/v3/__https:/github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/src/main/java/org/apache/flink/kubernetes/operator/controller/FlinkApplicationController.java__;!!GqivPVa7Brio!K_YcBE0y2rd7zQtMtIKmSNNUpMmUTUSA8VdkNCJ8i9w2tH2nwNWoq3j78oKszhY$> Thank you so much. Best, Fuyao From: Fuyao Li Date: Tuesday, May 4, 2021 at 19:34 To: Austin Cawley-Edwards , matth...@ververica.com , Yang Wang Cc: user Subject: Re: [External] : Re: StopWithSavepoint() method doesn't work in Java based flink native k8s operator Hello Austin, Yang, For the logging issue, I think I have found something worth to notice. They are all based on base image flink:1.12.1-scala_2.11-java11 Dockerfile: https://pastebin.ubuntu.com/p/JTsHygsTP6/<https://urldefense.com/v3/__https:/pastebin.ubuntu.com/p/JTsHygsTP6/__;!!GqivPVa7Brio!OVpkpwiox1P7d8b34Nmo9xfzrPlbO4cW65uPc-xLTxaPavtVFQ1GVzVs7J-Fd4Q$> In the JM and TM provisioned by the k8s operator. There is only flink-conf.yaml in the $FLINK_HOME/conf directory. Even if I tried to add these configurations to the image in advance. It seems the operator is seems overriding it and removing all other log4j configurations. This is causing the logs can’t be printed correctly. root@flink-demo-5fc78c8cf-hgvcj:/opt/flink/conf# ls flink-conf.yaml However, for the pods that is provisioned by flink native k8s CLI. There exists some log4j related configurations. root@test-application-cluster-79c7f9dcf7-44bq8:/opt/flink/conf# ls flink-conf.yaml log4j-console.properties logback-console.xml The native Kubernetes operator pod can print logs correctly because it has the log4j.properties file mounted to the opt/flink/conf/ directory. [1] For the Fl
Re: [External] : Re: StopWithSavepoint() method doesn't work in Java based flink native k8s operator
Hello All, I also checked the native-k8s’s automatically generated configmap. It only contains the flink-conf.yaml, but no log4j.properties. I am not very familiar with the implementation details behind native k8s. That should be the root cause, could you check the implementation and help me to locate the potential problem. Yang’s initial code: https://github.com/wangyang0918/flink-native-k8s-operator/blob/master/src/main/java/org/apache/flink/kubernetes/operator/controller/FlinkApplicationController.java My modified version: https://github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/src/main/java/org/apache/flink/kubernetes/operator/controller/FlinkApplicationController.java Thank you so much. Best, Fuyao From: Fuyao Li Date: Tuesday, May 4, 2021 at 19:34 To: Austin Cawley-Edwards , matth...@ververica.com , Yang Wang Cc: user Subject: Re: [External] : Re: StopWithSavepoint() method doesn't work in Java based flink native k8s operator Hello Austin, Yang, For the logging issue, I think I have found something worth to notice. They are all based on base image flink:1.12.1-scala_2.11-java11 Dockerfile: https://pastebin.ubuntu.com/p/JTsHygsTP6/<https://urldefense.com/v3/__https:/pastebin.ubuntu.com/p/JTsHygsTP6/__;!!GqivPVa7Brio!OVpkpwiox1P7d8b34Nmo9xfzrPlbO4cW65uPc-xLTxaPavtVFQ1GVzVs7J-Fd4Q$> In the JM and TM provisioned by the k8s operator. There is only flink-conf.yaml in the $FLINK_HOME/conf directory. Even if I tried to add these configurations to the image in advance. It seems the operator is seems overriding it and removing all other log4j configurations. This is causing the logs can’t be printed correctly. root@flink-demo-5fc78c8cf-hgvcj:/opt/flink/conf# ls flink-conf.yaml However, for the pods that is provisioned by flink native k8s CLI. There exists some log4j related configurations. root@test-application-cluster-79c7f9dcf7-44bq8:/opt/flink/conf# ls flink-conf.yaml log4j-console.properties logback-console.xml The native Kubernetes operator pod can print logs correctly because it has the log4j.properties file mounted to the opt/flink/conf/ directory. [1] For the Flink pods, it seems that it only have a flink-conf.yaml injected there. [2][3] No log4j related configmap is configured. That makes the logs in those pods no available. I am not sure how to inject something similar to the flink pods? Maybe adding some similar structure that exists in [1], into the cr.yaml ? So that such configmap will make the log4j.properties available for flink CRD? I am kind of confused at how to implement this. The deployment is a one-step operation in [4]. I don’t know how to make a configmap available to it? Maybe I can only use the new feature – pod template in Flink 1.13 to do this? [1] https://github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/deploy/flink-native-k8s-operator.yaml#L58<https://urldefense.com/v3/__https:/github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/deploy/flink-native-k8s-operator.yaml*L58__;Iw!!GqivPVa7Brio!OVpkpwiox1P7d8b34Nmo9xfzrPlbO4cW65uPc-xLTxaPavtVFQ1GVzVsYsKSwdA$> [2] https://github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/deploy/cr.yaml#L21<https://urldefense.com/v3/__https:/github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/deploy/cr.yaml*L21__;Iw!!GqivPVa7Brio!OVpkpwiox1P7d8b34Nmo9xfzrPlbO4cW65uPc-xLTxaPavtVFQ1GVzVs-oWyvPk$> [3] https://github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/src/main/java/org/apache/flink/kubernetes/operator/Utils/FlinkUtils.java#L83<https://urldefense.com/v3/__https:/github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/src/main/java/org/apache/flink/kubernetes/operator/Utils/FlinkUtils.java*L83__;Iw!!GqivPVa7Brio!OVpkpwiox1P7d8b34Nmo9xfzrPlbO4cW65uPc-xLTxaPavtVFQ1GVzVsk28At-8$> [4] https://github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/src/main/java/org/apache/flink/kubernetes/operator/controller/FlinkApplicationController.java#L176<https://urldefense.com/v3/__https:/github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/src/main/java/org/apache/flink/kubernetes/operator/controller/FlinkApplicationController.java*L176__;Iw!!GqivPVa7Brio!OVpkpwiox1P7d8b34Nmo9xfzrPlbO4cW65uPc-xLTxaPavtVFQ1GVzVsc49StKI$> Best, Fuyao From: Fuyao Li Date: Tuesday, May 4, 2021 at 15:23 To: Austin Cawley-Edwards , matth...@ververica.com Cc: user , Yang Wang , Austin Cawley-Edwards Subject: Re: [External] : Re: StopWithSavepoint() method doesn't work in Java based flink native k8s operator Hello All, For Logging issue: Hi Austin, This is the my full code implementation link [1], I just removed the credential related things. The operator definition can be found here.[2] You can also check other parts if you find any problem. The operator uses log4j2 and you can see there is a log appender for operator [3] and the operator pod can indeed pri
Re: [External] : Re: StopWithSavepoint() method doesn't work in Java based flink native k8s operator
Hello Austin, Yang, For the logging issue, I think I have found something worth to notice. They are all based on base image flink:1.12.1-scala_2.11-java11 Dockerfile: https://pastebin.ubuntu.com/p/JTsHygsTP6/ In the JM and TM provisioned by the k8s operator. There is only flink-conf.yaml in the $FLINK_HOME/conf directory. Even if I tried to add these configurations to the image in advance. It seems the operator is seems overriding it and removing all other log4j configurations. This is causing the logs can’t be printed correctly. root@flink-demo-5fc78c8cf-hgvcj:/opt/flink/conf# ls flink-conf.yaml However, for the pods that is provisioned by flink native k8s CLI. There exists some log4j related configurations. root@test-application-cluster-79c7f9dcf7-44bq8:/opt/flink/conf# ls flink-conf.yaml log4j-console.properties logback-console.xml The native Kubernetes operator pod can print logs correctly because it has the log4j.properties file mounted to the opt/flink/conf/ directory. [1] For the Flink pods, it seems that it only have a flink-conf.yaml injected there. [2][3] No log4j related configmap is configured. That makes the logs in those pods no available. I am not sure how to inject something similar to the flink pods? Maybe adding some similar structure that exists in [1], into the cr.yaml ? So that such configmap will make the log4j.properties available for flink CRD? I am kind of confused at how to implement this. The deployment is a one-step operation in [4]. I don’t know how to make a configmap available to it? Maybe I can only use the new feature – pod template in Flink 1.13 to do this? [1] https://github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/deploy/flink-native-k8s-operator.yaml#L58 [2] https://github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/deploy/cr.yaml#L21 [3] https://github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/src/main/java/org/apache/flink/kubernetes/operator/Utils/FlinkUtils.java#L83 [4] https://github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/src/main/java/org/apache/flink/kubernetes/operator/controller/FlinkApplicationController.java#L176 Best, Fuyao From: Fuyao Li Date: Tuesday, May 4, 2021 at 15:23 To: Austin Cawley-Edwards , matth...@ververica.com Cc: user , Yang Wang , Austin Cawley-Edwards Subject: Re: [External] : Re: StopWithSavepoint() method doesn't work in Java based flink native k8s operator Hello All, For Logging issue: Hi Austin, This is the my full code implementation link [1], I just removed the credential related things. The operator definition can be found here.[2] You can also check other parts if you find any problem. The operator uses log4j2 and you can see there is a log appender for operator [3] and the operator pod can indeed print out logs. But for the flink application JM and TM pod, I can see the errors mentioned earlier. Sed error and ERROR StatusLogger No Log4j 2 configuration file found. I used to use log4j for flink application, to avoid potential incompatible issue, I have already upgraded the POM for flink application to use log4j2. But the logging problem still exists. This is my log4j2.properties file in flink application. [6] This is the loggin related pom dependencies for flink application [7]. The logs can be printed during normal native k8s deployment and IDE debugging. When it comes to the operator, it seems not working. Could this be caused by class namespace conflict? Since I introduced the presto jar in the flink distribution. This is my Dockerfile to build the flink application jar [5]. Please share your idea on this. For the stopWithSavepoint issue, Just to note, I understand cancel command (cancelWithSavepoint() ) is a deprecated feature and it may not guarantee exactly once semantic and get inconsistent result, like Timer related things? Please correct me if I am wrong. The code that works with cancelWithSavepoint() is shared in [4] below. [1] https://github.com/FuyaoLi2017/flink-native-kubernetes-operator<https://urldefense.com/v3/__https:/github.com/FuyaoLi2017/flink-native-kubernetes-operator__;!!GqivPVa7Brio!M43rnv3I8fCMsbDbdQLrgzWtsF6rSJJlebU1hGD9w0OMn702aTN6N-zS0pc8xyg$> [2] https://github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/deploy/flink-native-k8s-operator.yaml<https://urldefense.com/v3/__https:/github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/deploy/flink-native-k8s-operator.yaml__;!!GqivPVa7Brio!M43rnv3I8fCMsbDbdQLrgzWtsF6rSJJlebU1hGD9w0OMn702aTN6N-zSxwZ7y0c$> [3] https://github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/src/main/resources/log4j2.properties<https://urldefense.com/v3/__https:/github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/src/main/resources/log4j2.properties__;!!GqivPVa7Brio!M43rnv3I8fCMsbDbdQLrgzWtsF6rSJJlebU1hGD9w0OMn702aTN6N-zSmcVTvfY$> [4] https://pastebin.ubuntu.com/p
Re: [External] : Re: StopWithSavepoint() method doesn't work in Java based flink native k8s operator
Hello All, For Logging issue: Hi Austin, This is the my full code implementation link [1], I just removed the credential related things. The operator definition can be found here.[2] You can also check other parts if you find any problem. The operator uses log4j2 and you can see there is a log appender for operator [3] and the operator pod can indeed print out logs. But for the flink application JM and TM pod, I can see the errors mentioned earlier. Sed error and ERROR StatusLogger No Log4j 2 configuration file found. I used to use log4j for flink application, to avoid potential incompatible issue, I have already upgraded the POM for flink application to use log4j2. But the logging problem still exists. This is my log4j2.properties file in flink application. [6] This is the loggin related pom dependencies for flink application [7]. The logs can be printed during normal native k8s deployment and IDE debugging. When it comes to the operator, it seems not working. Could this be caused by class namespace conflict? Since I introduced the presto jar in the flink distribution. This is my Dockerfile to build the flink application jar [5]. Please share your idea on this. For the stopWithSavepoint issue, Just to note, I understand cancel command (cancelWithSavepoint() ) is a deprecated feature and it may not guarantee exactly once semantic and get inconsistent result, like Timer related things? Please correct me if I am wrong. The code that works with cancelWithSavepoint() is shared in [4] below. [1] https://github.com/FuyaoLi2017/flink-native-kubernetes-operator [2] https://github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/deploy/flink-native-k8s-operator.yaml [3] https://github.com/FuyaoLi2017/flink-native-kubernetes-operator/blob/master/src/main/resources/log4j2.properties [4] https://pastebin.ubuntu.com/p/tcxT2FwPRS/ [5] https://pastebin.ubuntu.com/p/JTsHygsTP6/ [6] https://pastebin.ubuntu.com/p/2wgdcxVfSy/ [7] https://pastebin.ubuntu.com/p/Sq8xRjQyVY/ Best, Fuyao From: Austin Cawley-Edwards Date: Tuesday, May 4, 2021 at 14:47 To: matth...@ververica.com Cc: Fuyao Li , user , Yang Wang , Austin Cawley-Edwards Subject: [External] : Re: StopWithSavepoint() method doesn't work in Java based flink native k8s operator Hey all, Thanks for the ping, Matthias. I'm not super familiar with the details of @Yang Wang<mailto:danrtsey...@gmail.com>'s operator, to be honest :(. Can you share some of your FlinkApplication specs? For the `kubectl logs` command, I believe that just reads stdout from the container. Which logging framework are you using in your application and how have you configured it? There's a good guide for configuring the popular ones in the Flink docs[1]. For instance, if you're using the default Log4j 2 framework you should configure a ConsoleAppender[2]. Hope that helps a bit, Austin [1]: https://ci.apache.org/projects/flink/flink-docs-release-1.13/docs/deployment/advanced/logging/<https://urldefense.com/v3/__https:/ci.apache.org/projects/flink/flink-docs-release-1.13/docs/deployment/advanced/logging/__;!!GqivPVa7Brio!IkcTZZ5rY-669_XS8ldTeXg0NeH1nsQkupDh_zuUHAC4yqDOoiJ6f2EvCjPpPPQ$> [2]: https://logging.apache.org/log4j/2.x/manual/appenders.html#ConsoleAppender<https://urldefense.com/v3/__https:/logging.apache.org/log4j/2.x/manual/appenders.html*ConsoleAppender__;Iw!!GqivPVa7Brio!IkcTZZ5rY-669_XS8ldTeXg0NeH1nsQkupDh_zuUHAC4yqDOoiJ6f2EvHl40sbA$> On Tue, May 4, 2021 at 1:59 AM Matthias Pohl mailto:matth...@ververica.com>> wrote: Hi Fuyao, sorry for not replying earlier. The stop-with-savepoint operation shouldn't only suspend but terminate the job. Is it that you might have a larger state that makes creating the savepoint take longer? Even though, considering that you don't experience this behavior with your 2nd solution, I'd assume that we could ignore this possibility. I'm gonna add Austin to the conversation as he worked with k8s operators as well already. Maybe, he can also give you more insights on the logging issue which would enable us to dig deeper into what's going on with stop-with-savepoint. Best, Matthias On Tue, May 4, 2021 at 4:33 AM Fuyao Li mailto:fuyao...@oracle.com>> wrote: Hello, Update: I think stopWithSavepoint() only suspend the job. It doesn’t actually terminate (./bin/flink cancel) the job. I switched to cancelWithSavepoint() and it works here. Maybe stopWithSavepoint() should only be used to update the configurations like parallelism? For updating the image, this seems to be not suitable, please correct me if I am wrong. For the log issue, I am still a bit confused. Why it is not available in kubectl logs. How should I get access to it? Thanks. Best, Fuyao From: Fuyao Li mailto:fuyao...@oracle.com>> Date: Sunday, May 2, 2021 at 00:36 To: user mailto:user@flink.apache.org>>, Yang Wang mailto:danrtsey...@gmail.com>> Subject: [External] : Re: StopW
