Venkata krishnan Sowrirajan created FLINK-31109: ---------------------------------------------------
Summary: Fails with proxy user not supported even when security.kerberos.fetch.delegation-token is set to false Key: FLINK-31109 URL: https://issues.apache.org/jira/browse/FLINK-31109 Project: Flink Issue Type: Bug Reporter: Venkata krishnan Sowrirajan With {code:java} security.kerberos.fetch.delegation-token: false {code} and delegation tokens obtained through our internal service which sets both HADOOP_TOKEN_FILE_LOCATION to pick up the DTs and also sets the HADOOP_PROXY_USER which fails with the below error {code:java} SLF4J: Class path contains multiple SLF4J bindings. SLF4J: Found binding in [jar:file:/export/home/vsowrira/flink-1.18-SNAPSHOT/lib/log4j-slf4j-impl-2.17.1.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding in [jar:file:/export/apps/hadoop/hadoop-bin_2100503/share/hadoop/common/lib/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation. SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory] org.apache.flink.runtime.security.modules.SecurityModule$SecurityInstallException: Unable to set the Hadoop login user at org.apache.flink.runtime.security.modules.HadoopModule.install(HadoopModule.java:106) at org.apache.flink.runtime.security.SecurityUtils.installModules(SecurityUtils.java:76) at org.apache.flink.runtime.security.SecurityUtils.install(SecurityUtils.java:57) at org.apache.flink.client.cli.CliFrontend.mainInternal(CliFrontend.java:1188) at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1157) Caused by: java.lang.UnsupportedOperationException: Proxy user is not supported at org.apache.flink.runtime.security.token.hadoop.KerberosLoginProvider.throwProxyUserNotSupported(KerberosLoginProvider.java:137) at org.apache.flink.runtime.security.token.hadoop.KerberosLoginProvider.isLoginPossible(KerberosLoginProvider.java:81) at org.apache.flink.runtime.security.modules.HadoopModule.install(HadoopModule.java:73) ... 4 more {code} This seems to have gotten changed after [480e6edf|https://github.com/apache/flink/commit/] ([FLINK-28330][runtime][security] Remove old delegation token framework code) -- This message was sent by Atlassian Jira (v8.20.10#820010)