[YARN-8062] yarn rmadmin -getGroups returns group from which the user has been removed

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 3.1.0, 3.0.3
• Hadoop Flags: Reviewed
• Assignee: Sunil G
• Reporter: Sumana Sathish
• Created: 27/Feb/18 23:18
• Updated: 05/Apr/18 16:55
• Resolved: 26/Mar/18 18:39

Description

adding group hrt_yarn_rmadmin_test

sudo su - -c "groupadd hrt_yarn_rmadmin_test" root

adding user hrt_yarn_rmadmin_test to group hrt_yarn_rmadmin_test

sudo su - -c "useradd hrt_yarn_rmadmin_test -g hrt_yarn_rmadmin_test" root

adding group hrt_yarn_rmadmin_test_group2

sudo su - -c "groupadd hrt_yarn_rmadmin_test_group2" root

adding user hrt_yarn_rmadmin_test to group hrt_yarn_rmadmin_test_group2

sudo su - -c "usermod -a -G hrt_yarn_rmadmin_test_group2 hrt_yarn_rmadmin_test" root

Refresh and getGroups

yarn rmadmin -refreshUserToGroupsMappings
/usr/hdp/current/hadoop-yarn-client/bin/yarn rmadmin -getGroups hrt_yarn_rmadmin_test
hrt_yarn_rmadmin_test : hrt_yarn_rmadmin_test hrt_yarn_rmadmin_test_group2

Delete group hrt_yarn_rmadmin_test_group2 from user hrt_yarn_rmadmin_test and refresh and do getGroups.
We can still see group hrt_yarn_rmadmin_test_group2

sudo su - -c "gpasswd -d hrt_yarn_rmadmin_test hrt_yarn_rmadmin_test_group2" root

Removing user hrt_yarn_rmadmin_test from group hrt_yarn_rmadmin_test_group2

bash-4.2$  /usr/hdp/current/hadoop-yarn-client/bin/yarn rmadmin -refreshUserToGroupsMappings
/usr/hdp/current/hadoop-yarn-client/bin/yarn rmadmin -getGroups hrt_yarn_rmadmin_test
hrt_yarn_rmadmin_test : hrt_yarn_rmadmin_test hrt_yarn_rmadmin_test_group2