Hi Superainbower, could you share the complete logs with us? They contain which Flink version you are using and also the classpath you are starting the JVM with. Have you tried whether the same problem occurs with the latest Flink version?
Cheers, Till On Mon, Oct 12, 2020 at 10:32 AM superainbower <superainbo...@163.com> wrote: > Hi Till, > Could u tell me how to configure HDFS as statebackend when I deploy flink > on k8s? > I try to add the following to flink-conf.yaml > > state.backend: rocksdb > state.checkpoints.dir: hdfs://slave2:8020/flink/checkpoints > state.savepoints.dir: hdfs://slave2:8020/flink/savepoints > state.backend.incremental: true > > And add flink-shaded-hadoop2-2.8.3-1.8.3.jar to /opt/flink/lib > > But It doesn’t work and I got this error logs > > Caused by: org.apache.flink.core.fs.UnsupportedFileSystemSchemeException: > Could not find a file system implementation for scheme 'hdfs'. The scheme > is not directly supported by Flink and no Hadoop file system to support > this scheme could be loaded. For a full list of supported file systems, > please see > https://ci.apache.org/projects/flink/flink-docs-stable/ops/filesystems/. > > Caused by: org.apache.flink.core.fs.UnsupportedFileSystemSchemeException: > Cannot support file system for 'hdfs' via Hadoop, because Hadoop is not in > the classpath, or some classes are missing from the classpath > > Caused by: java.lang.NoClassDefFoundError: Could not initialize class > org.apache.flink.runtime.util.HadoopUtils > On 10/09/2020 22:13, Till Rohrmann <trohrm...@apache.org> wrote: > > Hi Saksham, > > if you want to extend the Flink Docker image you can find here more > details [1]. > > If you want to include the library in your user jar, then you have to add > the library as a dependency to your pom.xml file and enable the shade > plugin for building an uber jar [2]. > > [1] > https://ci.apache.org/projects/flink/flink-docs-stable/ops/deployment/docker.html#advanced-customization > [2] > https://maven.apache.org/plugins/maven-shade-plugin/examples/includes-excludes.html > > Cheers, > Till > > On Fri, Oct 9, 2020 at 3:22 PM saksham sapra <sapra.saksh...@gmail.com> > wrote: > >> Thanks Till for helping out, >> >> The way you suggested, is it possible to copy libs which is in D >> directory to FLINK_HOME/libs. I tried to run a copy command : copy >> D:/data/libs to FLINK_HOME/libs and it gets copied but i dont how can i >> check where it gets copied and this libs is taken by flink? >> >> >> Thanks, >> Saksham Sapra >> >> On Wed, Oct 7, 2020 at 9:40 PM Till Rohrmann <trohrm...@apache.org> >> wrote: >> >>> HI Saksham, >>> >>> the easiest approach would probably be to include the required libraries >>> in your user code jar which you submit to the cluster. Using maven's shade >>> plugin should help with this task. Alternatively, you could also create a >>> custom Flink Docker image where you add the required libraries to the >>> FLINK_HOME/libs directory. This would however mean that every job you >>> submit to the Flink cluster would see these libraries in the system class >>> path. >>> >>> Cheers, >>> Till >>> >>> On Wed, Oct 7, 2020 at 2:08 PM saksham sapra <sapra.saksh...@gmail.com> >>> wrote: >>> >>>> Hi , >>>> >>>> i have made some configuration using this link page : >>>> https://ci.apache.org/projects/flink/flink-docs-release-1.11/ops/deployment/kubernetes.html >>>> . >>>> and i am able to run flink on UI , but i need to submit a job using : >>>> http://localhost:8001/api/v1/namespaces/default/services/flink-jobmanager:webui/proxy/#/submit >>>> through POstman, and i have some libraries which in local i can add in libs >>>> folder but in this how can i add my libraries so that it works properly. >>>> >>>> [image: image.png] >>>> >>>
