tasanuma commented on a change in pull request #3190:
URL: https://github.com/apache/hadoop/pull/3190#discussion_r666759085
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File path: hadoop-common-project/hadoop-kms/src/site/markdown/index.md.vm
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@@ -791,10 +791,62 @@ This secret sharing can be done using a Zookeeper service
which is configured in
$H4 Delegation Tokens
Similar to HTTP authentication, KMS uses Hadoop Authentication for delegation
tokens too.
+Under HA, every KMS instance must verify the delegation token given by another
KMS instance.
+To do this, all the KMS instances must use ZKDelegationTokenSecretManager to
retrieve
+the TokenIdentifiers and DelegationKeys from ZooKeeper.
-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.
+Sample configuration:
Review comment:
How about adding the path of the configurations?
```suggestion
Sample configuration in `etc/hadoop/kms-site.xml`:
```
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