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From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18323) Remove multiple ACLs for the same user in kerberos
Date Wed, 05 Jul 2017 17:01:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16075084#comment-16075084
] 

Josh Elser commented on HBASE-18323:
------------------------------------

bq. I think this line of code we can remove : acls.addAll(Ids.CREATOR_ALL_ACL); 

No, I don't think we should do that. This only works in the case where the HBase service user
is an HBase superuser. We're duplicating the ACLs because the service user is also a superuser.
If we would ever change the semantics of HBase superuser, we would have to remember to change
this logic again.

I think it would be safer to avoid setting the service user to the list of ACLs we build up
in the same method (always use CREATOR_ALL_ACL, just avoid setting the explicit ACL for the
same user). Does that make sense? Also, let me know if I'm missing something as this logic
in ZooKeeper isn't exactly straightforward :)

> Remove multiple ACLs for the same user in kerberos
> --------------------------------------------------
>
>                 Key: HBASE-18323
>                 URL: https://issues.apache.org/jira/browse/HBASE-18323
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 1.2.0, 3.0.0
>            Reporter: Shibin Zhang
>            Priority: Minor
>         Attachments: HBASE-18323.patch
>
>
> When deploy hbase in kerberos way ,there will be multiple acls in znode :
> 'world,'anyone
> : r
> 'sasl,'hbase
> : cdrwa
> 'sasl,'hbase
> : cdrwa
> I also see the related issue and apply the patch, like  https://issues.apache.org/jira/browse/HBASE-17717

> but in my environment ,this situation still appear,
> After dig into the code , i found the reason in source code  ZKUtil.createAcl  is
>  if (zkw.isClientReadable(node)) {
>         LOG.error("isSecureZooKeeper user: clientReadable");
>         acls.addAll(Ids.CREATOR_ALL_ACL);
>         acls.addAll(Ids.READ_ACL_UNSAFE);
>       } else {
>         LOG.error("isSecureZooKeeper user: clientReadable no");
>         acls.addAll(Ids.CREATOR_ALL_ACL);
>       } 
>   acls.addAll(Ids.CREATOR_ALL_ACL);   
>   
>   Id AUTH_IDS = new Id("auth", "");
> ArrayList<ACL> CREATOR_ALL_ACL = new ArrayList(Collections.singletonList(new ACL(31,
AUTH_IDS)));
> AUTH_IDS   with  "auth " will result  current connection auth user  add to znode acl
,
> so it will appear multiple acls for same users.
> I think this line of code  we can remove  :  acls.addAll(Ids.CREATOR_ALL_ACL);   



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