Github user ariskk commented on the issue:
https://github.com/apache/bahir-flink/pull/13
In our use case, both additions and deletions are processed via flink.
Think of a graph for example, that you store nodes as keys and their edges
as sorted sets (eg sorted on date created). Assuming this is dynamic, edges may
be added, but may also be removed.
I agree it wouldn't make much sense to delete keys, but the ability to add
and remove elements from sets is important.
We are using our own Redis Sink up to now, which supports this, but we are
thinking to migrate to the official one.
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