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Aleksey Yeschenko commented on CASSANDRA-21378:
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FTR, Cassandra seems to be the only project that uses MTs in this manner.
> Stream and compare merkle trees incrementally
> ---------------------------------------------
>
> Key: CASSANDRA-21378
> URL: https://issues.apache.org/jira/browse/CASSANDRA-21378
> Project: Apache Cassandra
> Issue Type: Improvement
> Reporter: Aleksey Yeschenko
> Priority: Normal
>
> Merkle trees are meant to be exchanged incrementally, not streamed wholesale.
> At the cost of some additional roundtrips, we could/should make our
> comparison logic incremental, so that we can skip exchanging identical
> branches.
> This would be another way to reduce the memory footprint of merkle trees on
> the repair coordinator.
> Related: CASSANDRA-21377.
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