[jira] [Commented] (HADOOP-14445) Delegation tokens are not shared between KMS instances

["Rushabh S Shah (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-14445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16033046#comment-16033046 ] 

Rushabh S Shah commented on HADOOP-14445:
-----------------------------------------

bq. With either the current patch of the Arun's #2 solution, we can address this problem, so this seems an orthogonal issue, no?
Let me understand Arun's#2 fix.
For example: if the loadbalancing kms url is {{kms://https@kms01.example.com;kms02.example.com:9600/kms}}
After applying Arun's#2 fix, what will the token map look like ?
1.
||TokenService||Token||
|kms://https@kms01.example.com:9600/kms|t1|
|kms://https@kms02.example.com:9600/kms|t1|

or
2. 
||TokenService||Token||
|{{kms01.example.com}}'s ip:9600|t1|
|{{kms02.example.com}}'s ip:9600|t1|
[~asuresh] [~yzhangal]

> Delegation tokens are not shared between KMS instances
> ------------------------------------------------------
>
>                 Key: HADOOP-14445
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14445
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: documentation, kms
>    Affects Versions: 2.8.0, 3.0.0-alpha1
>            Reporter: Wei-Chiu Chuang
>            Assignee: Rushabh S Shah
>         Attachments: HADOOP-14445-branch-2.8.patch
>
>
> As discovered in HADOOP-14441, KMS HA using LoadBalancingKMSClientProvider do not share delegation tokens. (a client uses KMS address/port as the key for delegation token)
> {code:title=DelegationTokenAuthenticatedURL#openConnection}
> if (!creds.getAllTokens().isEmpty()) {
>         InetSocketAddress serviceAddr = new InetSocketAddress(url.getHost(),
>             url.getPort());
>         Text service = SecurityUtil.buildTokenService(serviceAddr);
>         dToken = creds.getToken(service);
> {code}
> But KMS doc states:
> {quote}
> Delegation Tokens
> Similar to HTTP authentication, KMS uses Hadoop Authentication for delegation tokens too.
> Under HA, A KMS instance must verify the delegation token given by another KMS instance, by checking the shared secret used to sign the delegation token. To do this, all KMS instances must be able to retrieve the shared secret from ZooKeeper.
> {quote}
> We should either update the KMS documentation, or fix this code to share delegation tokens.



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