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Ldap setting to force username to lower - Hadoop requirement

We have alpha numeric user id's which AD returns as Upper case 


1. when you look up a user "b1234", AD returns "B1234"

2. the cloudera cluster spss analytical server is trying to inter-phase with forces all user id to lowercase

3. When user impersonation is enabled on the analytical server, anaytical server updates the folder onwer permissions when it creates user temp files.  Lets look at an error to understand this better



Caused by: Permission denied: user=b1234, access=WRITE, inode=                                   "/user/as_user/analytic-root/analytic-workspace/ibm/.users/B1234/.executions/.temp/16ff7c6ce40-30ef814296c35326":B1234:hdfs:drwxr-xr-x
at org.apache.hadoop.hdfs.server.namenode.DefaultAuthorizationProvider.checkFsPermission(
so the file /user/as_user/analytic-root/analytic-workspace/ibm/.users/B1234/.executions/.temp/16ff7c6ce40-30ef814296c35326 was created by anytical server and analytical server updated the permission of the file as B1234:hdfs:drwxr-xr-x
Now since hdfs is case sensitive, it thinks both the users are different and the job fails.
4. This issue can be resolved by adding an AD attribute in AD, most organizations dont have the feasibility to do that
5. To address this issue products like Hue have added this feature as part of the product itself


  • Guest
  • Feb 7 2020
  • Delivered
Who would benefit from this IDEA? Every Hadoop environment using SPSS analytical server with user impersonation
Priority Justification This will define whether out company is going to use SPSS analytical server or not
Client Name Navyfederal Credit union
How should it work?

SPSS analytical server configuration should have a setting to force username to lowercase based on what AD returns

Idea Priority Urgent
  • Admin
    DOUGLAS STAUBER commented
    13 Oct, 2020 02:20pm

    Thanks for the suggestion. This is now delivered and a part of the latest Analytic Server 3.2.2 release (just released in late September 2020).

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