Comments - With the rocksdb plugin, does the SQL UPDATE leverage rocksdb's merge operator?
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I have very little C++ experience but it looks to me like the ha_rocksdb::update_write_row method is the most relevant one for SQL UPDATEs.
And that method appears to me to do a get + modify + delete rather that leveaging rocksdb's merge operator. I could be wrong though.
Would be great if someone could clarify.