Hi Tino,
从org.apache.flink.core.fs.FileSystem.java
<https://github.com/apache/flink/blob/master/flink-core/src/main/java/org/apache/flink/core/fs/FileSystem.java#L361-L371>
来看，Flink直接将fs.default-scheme当作URI来解析，并没有解析相关xml配置的操作，看起来Flink目前是不支持HA架构的HDFS集群的。
Best,
Yanfei
Xuyang <xyzhong...@163.com> 于2022年9月21日周三 23:28写道：
> Hi，我对HA的HDFS部署不是很熟悉，但是看错误栈是由于无法识别hostname引起的：
> Caused by: java.lang.IllegalArgumentException:
> java.net.UnknownHostException: datacluster
> 我猜测是不是可以修改为以下两种之一：
> 1. hdfs://datacluster: port (类似hdfs://datacluster:8080)
>
> 2. hdfs:///datacluster (三个斜杠)
>
>
>
>
> 希望可以帮到你
>
> --
>
> Best！
> Xuyang
>
>
>
>
>
> 在 2022-09-21 18:24:46，"Tino Hean" <tinoh...@gmail.com> 写道：
> >*大家好, *
> >*我正在测试在k8s集群部署模式下使用HA架构的HDFS集群, 以下是我的提交命令参数*
> >./bin/flink run-application \
> > --detached \
> > --target kubernetes-application \
> > -Dkubernetes.cluster-id=test \
> > -Dkubernetes.container.image=flink-java11 \
> > -Dfs.default-scheme=hdfs://datacluster \
> > -Dkubernetes.rest-service.exposed.type=LoadBalancer \
> >
>
> >-Dhigh-availability=org.apache.flink.kubernetes.highavailability.KubernetesHaServicesFactory
> >\
> > -Dhigh-availability.storageDir=hdfs://datacluster/flink/recovery \
> > -Dkubernetes.namespace=flink \
> > -Dkubernetes.service-account=flink-sa \
> > -Denv.hadoop.conf.dir=/opt/flink/conf \
> > -Dkubernetes.container.image.pull-policy=Always \
> > local:///opt/flink/usrlib/test.jar
> >
> >*我已经复制了core-site.xml 和hdfs-site.xml到$FLINK_HOME/conf下, 目录结构如下*
> >flink@e3187a41a139:~$ ls conf
> >core-site.xml hdfs-site.xml log4j-console.properties
> >log4j-session.properties logback-session.xml masters zoo.cfg
> >flink-conf.yaml log4j-cli.properties log4j.properties logback-console.xml
> >logback.xml workers
> >
> >*但是遇到了下面的报错:*
> >
> >2022-09-21 10:17:40,156 ERROR
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint [] - Could
> not
> >start cluster entrypoint KubernetesApplicationClusterEntrypoint.
> >org.apache.flink.runtime.entrypoint.ClusterEntrypointException: Failed to
> >initialize the cluster entrypoint KubernetesApplicationClusterEntrypoint.
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:250)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runClusterEntrypoint(ClusterEntrypoint.java:711)
> >[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.kubernetes.entrypoint.KubernetesApplicationClusterEntrypoint.main(KubernetesApplicationClusterEntrypoint.java:86)
> >[flink-dist-1.15.2.jar:1.15.2]
> >Caused by: org.apache.flink.util.FlinkException: Could not create the ha
> >services from the instantiated HighAvailabilityServicesFactory
> >org.apache.flink.kubernetes.highavailability.KubernetesHaServicesFactory.
> > at
>
> >org.apache.flink.runtime.highavailability.HighAvailabilityServicesUtils.createCustomHAServices(HighAvailabilityServicesUtils.java:287)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.highavailability.HighAvailabilityServicesUtils.createHighAvailabilityServices(HighAvailabilityServicesUtils.java:143)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.createHaServices(ClusterEntrypoint.java:427)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.initializeServices(ClusterEntrypoint.java:376)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runCluster(ClusterEntrypoint.java:277)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.lambda$startCluster$1(ClusterEntrypoint.java:227)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at java.security.AccessController.doPrivileged(Native Method)
> ~[?:?]
> > at javax.security.auth.Subject.doAs(Unknown Source) ~[?:?]
> > at
>
> >org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1898)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at
>
> >org.apache.flink.runtime.security.contexts.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:224)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > ... 2 more
> >Caused by: java.io.IOException: Could not create FileSystem for highly
> >available storage path (hdfs://datacluster/flink/recovery/cruiser)
> > at
>
> >org.apache.flink.runtime.blob.BlobUtils.createFileSystemBlobStore(BlobUtils.java:102)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.blob.BlobUtils.createBlobStoreFromConfig(BlobUtils.java:86)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.kubernetes.highavailability.KubernetesHaServicesFactory.createHAServices(KubernetesHaServicesFactory.java:53)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.highavailability.HighAvailabilityServicesUtils.createCustomHAServices(HighAvailabilityServicesUtils.java:284)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.highavailability.HighAvailabilityServicesUtils.createHighAvailabilityServices(HighAvailabilityServicesUtils.java:143)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.createHaServices(ClusterEntrypoint.java:427)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.initializeServices(ClusterEntrypoint.java:376)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runCluster(ClusterEntrypoint.java:277)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.lambda$startCluster$1(ClusterEntrypoint.java:227)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at java.security.AccessController.doPrivileged(Native Method)
> ~[?:?]
> > at javax.security.auth.Subject.doAs(Unknown Source) ~[?:?]
> > at
>
> >org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1898)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at
>
> >org.apache.flink.runtime.security.contexts.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:224)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > ... 2 more
> >Caused by: java.io.IOException: Cannot instantiate file system for URI:
> >hdfs://datacluster/flink/recovery/cruiser
> > at
>
> >org.apache.flink.runtime.fs.hdfs.HadoopFsFactory.create(HadoopFsFactory.java:196)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.core.fs.FileSystem.getUnguardedFileSystem(FileSystem.java:528)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at org.apache.flink.core.fs.FileSystem.get(FileSystem.java:409)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at org.apache.flink.core.fs.Path.getFileSystem(Path.java:274)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.blob.BlobUtils.createFileSystemBlobStore(BlobUtils.java:99)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.blob.BlobUtils.createBlobStoreFromConfig(BlobUtils.java:86)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.kubernetes.highavailability.KubernetesHaServicesFactory.createHAServices(KubernetesHaServicesFactory.java:53)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.highavailability.HighAvailabilityServicesUtils.createCustomHAServices(HighAvailabilityServicesUtils.java:284)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.highavailability.HighAvailabilityServicesUtils.createHighAvailabilityServices(HighAvailabilityServicesUtils.java:143)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.createHaServices(ClusterEntrypoint.java:427)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.initializeServices(ClusterEntrypoint.java:376)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runCluster(ClusterEntrypoint.java:277)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.lambda$startCluster$1(ClusterEntrypoint.java:227)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at java.security.AccessController.doPrivileged(Native Method)
> ~[?:?]
> > at javax.security.auth.Subject.doAs(Unknown Source) ~[?:?]
> > at
>
> >org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1898)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at
>
> >org.apache.flink.runtime.security.contexts.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:224)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > ... 2 more
> >Caused by: java.lang.IllegalArgumentException:
> >java.net.UnknownHostException: datacluster
> > at
>
> >org.apache.hadoop.security.SecurityUtil.buildTokenService(SecurityUtil.java:445)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at
>
> >org.apache.hadoop.hdfs.NameNodeProxiesClient.createProxyWithClientProtocol(NameNodeProxiesClient.java:140)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:358)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:292)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at
>
> >org.apache.hadoop.hdfs.DistributedFileSystem.initDFSClient(DistributedFileSystem.java:200)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at
>
> >org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:185)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at
>
> >org.apache.flink.runtime.fs.hdfs.HadoopFsFactory.create(HadoopFsFactory.java:168)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.core.fs.FileSystem.getUnguardedFileSystem(FileSystem.java:528)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at org.apache.flink.core.fs.FileSystem.get(FileSystem.java:409)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at org.apache.flink.core.fs.Path.getFileSystem(Path.java:274)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.blob.BlobUtils.createFileSystemBlobStore(BlobUtils.java:99)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.blob.BlobUtils.createBlobStoreFromConfig(BlobUtils.java:86)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.kubernetes.highavailability.KubernetesHaServicesFactory.createHAServices(KubernetesHaServicesFactory.java:53)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.highavailability.HighAvailabilityServicesUtils.createCustomHAServices(HighAvailabilityServicesUtils.java:284)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.highavailability.HighAvailabilityServicesUtils.createHighAvailabilityServices(HighAvailabilityServicesUtils.java:143)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.createHaServices(ClusterEntrypoint.java:427)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.initializeServices(ClusterEntrypoint.java:376)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runCluster(ClusterEntrypoint.java:277)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.lambda$startCluster$1(ClusterEntrypoint.java:227)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at java.security.AccessController.doPrivileged(Native Method)
> ~[?:?]
> > at javax.security.auth.Subject.doAs(Unknown Source) ~[?:?]
> > at
>
> >org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1898)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at
>
> >org.apache.flink.runtime.security.contexts.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:224)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > ... 2 more
> >Caused by: java.net.UnknownHostException: datacluster
> > at
>
> >org.apache.hadoop.security.SecurityUtil.buildTokenService(SecurityUtil.java:445)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at
>
> >org.apache.hadoop.hdfs.NameNodeProxiesClient.createProxyWithClientProtocol(NameNodeProxiesClient.java:140)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:358)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:292)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at
>
> >org.apache.hadoop.hdfs.DistributedFileSystem.initDFSClient(DistributedFileSystem.java:200)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at
>
> >org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:185)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at
>
> >org.apache.flink.runtime.fs.hdfs.HadoopFsFactory.create(HadoopFsFactory.java:168)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.core.fs.FileSystem.getUnguardedFileSystem(FileSystem.java:528)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at org.apache.flink.core.fs.FileSystem.get(FileSystem.java:409)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at org.apache.flink.core.fs.Path.getFileSystem(Path.java:274)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.blob.BlobUtils.createFileSystemBlobStore(BlobUtils.java:99)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.blob.BlobUtils.createBlobStoreFromConfig(BlobUtils.java:86)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.kubernetes.highavailability.KubernetesHaServicesFactory.createHAServices(KubernetesHaServicesFactory.java:53)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.highavailability.HighAvailabilityServicesUtils.createCustomHAServices(HighAvailabilityServicesUtils.java:284)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.highavailability.HighAvailabilityServicesUtils.createHighAvailabilityServices(HighAvailabilityServicesUtils.java:143)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.createHaServices(ClusterEntrypoint.java:427)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.initializeServices(ClusterEntrypoint.java:376)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runCluster(ClusterEntrypoint.java:277)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.lambda$startCluster$1(ClusterEntrypoint.java:227)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at java.security.AccessController.doPrivileged(Native Method)
> ~[?:?]
> > at javax.security.auth.Subject.doAs(Unknown Source) ~[?:?]
> > at
>
> >org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1898)
>
> >~[flink-shaded-hadoop-3-uber-3.1.1.7.2.9.0-173-9.0.jar:3.1.1.7.2.9.0-173-9.0]
> > at
>
> >org.apache.flink.runtime.security.contexts.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > at
>
> >org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:224)
> >~[flink-dist-1.15.2.jar:1.15.2]
> > ... 2 more
> >
> >*我尝试把以下提交的格式更换为active的namenode节点可以正常提交并运行,*
> > -Dfs.default-scheme=hdfs://namenode-active:8020 \
> >
> >-Dhigh-availability.storageDir=hdfs://namenode-active:8020/flink/recovery
> \
> >
> >所以还无法明白我是哪里搞错了, 是不是flink不支持HA架构的hdfs集群, 望解惑, 非常感谢!
> >
> >*补充信息:*
> >hadoop版本: 3.3.4
> >flink版本: 1.15.2
> >
> >*hadoop hdfs-site.xml相关配置如下*
> >
> ><property>
> > <name>dfs.nameservices</name>
> > <value>datacluster</value>
> ></property>
> ><property>
> > <name>dfs.ha.namenodes.datacluster</name>
> > <value>nn1,nn2</value>
> ></property>
> ><property>
> > <name>dfs.namenode.rpc-address.datacluster.nn1</name>
> > <value>namenode-active:8020</value>
> ></property>
> ><property>
> > <name>dfs.namenode.rpc-address.datacluster.nn2</name>
> > <value>namenode-standby:8020</value>
> ></property>
> ><property>
> > <name>dfs.namenode.http-address.datacluster.nn1</name>
> > <value>namenode-active:9870</value>
> ></property>
> ><property>
> > <name>dfs.namenode.http-address.datacluster.nn2</name>
> > <value>namenode-standby:9870</value>
> ></property>
>
