[FLINK-8519] FileAlreadyExistsException on Start Flink Session

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Invalid
• Affects Version/s: 1.5.0
• Fix Version/s: 1.5.0
• Component/s: Deployment / YARN
• Assignee: Unassigned
• Reporter: Hai Zhou
• Created: 27/Jan/18 11:19
• Updated: 21/Mar/18 08:39
• Resolved: 21/Mar/18 08:39

Description

steps to reproduce:
1. build flink from source , git commit: c1734f4
2. run script:
source /path/hadoop/bin/hadoop_user_login.sh hadoop-launcher;
export YARN_CONF_DIR=/path/hadoop/etc/hadoop;
export HADOOP_CONF_DIR=/path/hadoop/etc/hadoop;
export JVM_ARGS="-Djava.security.krb5.conf=${HADOOP_CONF_DIR}/krb5.conf";
/path/flink-1.5-SNAPSHOT/bin/yarn-session.sh -D yarn.container-start-command-template="/usr/local/jdk1.8.0_112/bin/java %%jvmmem%% %%jvmopts%% %%logging%% %%class%% %%args%% %%redirects%%" -n 4 -nm job_name -qu root.rt.flink -jm 1024 -tm 4096 -s 4 -d
 
error infos:

2018-01-27 00:51:12,841 ERROR org.apache.flink.yarn.cli.FlinkYarnSessionCli - Error while running the Flink Yarn session.
java.lang.reflect.UndeclaredThrowableException
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1571)
at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
at org.apache.flink.yarn.cli.FlinkYarnSessionCli.main(FlinkYarnSessionCli.java:786)
Caused by: org.apache.flink.client.deployment.ClusterDeploymentException: Couldn't deploy Yarn session cluster
at org.apache.flink.yarn.AbstractYarnClusterDescriptor.deploySessionCluster(AbstractYarnClusterDescriptor.java:389)
at org.apache.flink.yarn.cli.FlinkYarnSessionCli.run(FlinkYarnSessionCli.java:594)
at org.apache.flink.yarn.cli.FlinkYarnSessionCli.lambda$main$2(FlinkYarnSessionCli.java:786)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1556)
... 2 more
Caused by: org.apache.hadoop.fs.FileAlreadyExistsException: Path /user already exists as dir; cannot create link here
at org.apache.hadoop.fs.viewfs.InodeTree.createLink(InodeTree.java:244)
at org.apache.hadoop.fs.viewfs.InodeTree.<init>(InodeTree.java:334)
at org.apache.hadoop.fs.viewfs.ViewFileSystem$1.<init>(ViewFileSystem.java:161)
at org.apache.hadoop.fs.viewfs.ViewFileSystem.initialize(ViewFileSystem.java:161)
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2397)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:89)
at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2431)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2413)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:368)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:167)
at org.apache.flink.yarn.AbstractYarnClusterDescriptor.startAppMaster(AbstractYarnClusterDescriptor.java:656)
at org.apache.flink.yarn.AbstractYarnClusterDescriptor.deployInternal(AbstractYarnClusterDescriptor.java:485)
at org.apache.flink.yarn.AbstractYarnClusterDescriptor.deploySessionCluster(AbstractYarnClusterDescriptor.java:384)
... 7 more