Hey, I have been working on the integration of Apache DataSketches HLL into Apache Impala for a while now. I used a snapshot from the c++ library using this commit at the top: https://github.com/apache/incubator-datasketches-cpp/commit/a6265b307a03085abe26c20413fdbf7d7a5eaf29 Recently I updated our snapshot and noticed that there was a change that removed hll_union_alloc<A>::serialize_compact() functions that I actually used in the Impala code: https://github.com/apache/incubator-datasketches-cpp/commit/92c3d309d78c91ae09b810c49bb2b6b05fa6d923
As I see deserialization() functions are still there so I assume there is still a way to serialize hll_union even if there is no serialize() and serialize_compact() functions. Could you help me out what is the current way of serializing such hll_union objects? Should I call get_result() to get the underlying hll_sketch and serialize that? Woulg hll_union::deserialize() accept it as a parameter? Cheers, Gabor
