ppatierno commented on code in PR #620:
URL: https://github.com/apache/kafka-site/pull/620#discussion_r1703365750
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38/ops.html:
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@@ -4105,7 +4105,10 @@ <h3>Reverting to ZooKeeper mode During the Migration</h3>
</li>
<li>
Using <code>zookeeper-shell.sh</code>, run <code>rmr
/controller</code> so that one
- of the brokers can become the new old-style controller.
+ of the brokers can become the new old-style controller.
Additionally, run
+ <code>get /migration</code> followed by <code>rmr
/migration</code> to clear the
+ migration state from ZooKeeper. This will allow you to
re-attempt the migration
+ in the future. The data read from "/migration" can be useful for
debugging.
Review Comment:
I have commented the corresponding JIRA to understand in which state the
user rollbacks the cluster to restart the migration because I tried this
scenario more times without deleting the /migration znode and it worked fine.
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