Major Description
The ranger.usersync.unix.minGroupId is not set default value. Like ranger.usersync.unix.minUserId, it should be set default value. Following variable equals to 0 when built the unix user list.
minimumGroupId=Integer.parseInt(config.getMinGroupId());
Ranger usersync may get System Virtual User Group Name instead of real group name.
if (numGroupId < minimumGroupId)
continue;
String groupName = groupId2groupNameMap.get(gid);
This result is that the Ranger usersync created error users.
