Ivan Andika created HDDS-16670:
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Summary: Support S3 secure follower read
Key: HDDS-16670
URL: https://issues.apache.org/jira/browse/HDDS-16670
Project: Apache Ozone
Issue Type: Sub-task
Reporter: Ivan Andika
At the current state, secure S3 reads cannot use the follower read feature.
S3SecurityUtil#validateS3Credential requires that the current OM is a leader.
The documented reason is that follower can be arbitrarily behind the leader and
therefore might not see the token or the revocation. Due to this reason,
currently OM follower read is not supported for secure S3 reads.
We can think on how to support it. For follower linearizable read, we can
probably allow it since the ReadIndex mechanism ensure linearizability and the
follower will not return until it's caught up to the ReadIndex. However, for
local lease, it might be a bit tricky since it doesn't guarantee
linearizability.
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