Github user jtstorck commented on the issue: https://github.com/apache/nifi/pull/2065 +1 LGTM Made a few minor formatting changes, and moved the spock spec from src/test/java to src/test/groovy. To test this, I ran a KDC and ZK server in a docker container with two principals. I created a node using principal1 that was sasl-secured via principal1, and used the zk migrator to export it to a json file. Then, I manually modified the json file to change the ACL on the node I created to set the owner to principal2. I then used the zk migrator to send the updated json to ZK, using the --ignore-source and --use-existing-acl options. After attempting to access the node as principal1 (which failed as expected), I was able to access the node as princopal2 (as expected).
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