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https://issues.apache.org/jira/browse/HADOOP-14445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16033046#comment-16033046
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Rushabh S Shah commented on HADOOP-14445:
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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://[email protected];kms02.example.com:9600/kms}}
After applying Arun's#2 fix, what will the token map look like ?
1.
||TokenService||Token||
|kms://[email protected]:9600/kms|t1|
|kms://[email protected]: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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