Hi Kostas, I tried your PR - trying to write to S3 from Flink running on AWS, and I got the following error. I copied the three jar files flink-hadoop-fs-1.7-SNAPSHOT.jar, flink-s3-fs-base-1.7-SNAPSHOT.jar, flink-s3-fs-hadoop-1.7-SNAPSHOT.jar to lib/ directory. Do I need to make any change to HADOOP configurations?
Thanks and best regards, Averell java.lang.Exception: unable to establish the security context at org.apache.flink.runtime.security.SecurityUtils.install(SecurityUtils.java:73) at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1118) Caused by: java.lang.RuntimeException: java.lang.RuntimeException: class org.apache.flink.fs.shaded.hadoop3.org.apache.hadoop.security.JniBasedUnixGroupsMappingWithFallback not org.apache.hadoop.security.GroupMappingServiceProvider at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2503) at org.apache.hadoop.security.Groups.<init>(Groups.java:106) at org.apache.hadoop.security.Groups.<init>(Groups.java:101) at org.apache.hadoop.security.Groups.getUserToGroupsMappingService(Groups.java:448) at org.apache.hadoop.security.UserGroupInformation.initialize(UserGroupInformation.java:331) at org.apache.hadoop.security.UserGroupInformation.setConfiguration(UserGroupInformation.java:359) at org.apache.flink.runtime.security.modules.HadoopModule.install(HadoopModule.java:70) at org.apache.flink.runtime.security.SecurityUtils.install(SecurityUtils.java:67) ... 1 more Caused by: java.lang.RuntimeException: class org.apache.flink.fs.shaded.hadoop3.org.apache.hadoop.security.JniBasedUnixGroupsMappingWithFallback not org.apache.hadoop.security.GroupMappingServiceProvider at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2497) -- Sent from: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/