CRC32 hash as the default partitioner

[ifnesi]

Dear librdkafka community,

Why the default partitioner was set to crc32 (consistent_random) whilst in Java it is murmur2_random?

I am asking that because recently I have written a blog post suggesting on how to keep consistency (partition-wise) when using Java and librdkafka-based clients (https://www.confluent.io/blog/standardized-hashing-across-java-and-non-java-producers), but I was asked why crc32 is the default on librdkafka. Any historical reason?