Cluster: Speed up processing of MySQL Query Rules #3930
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Multiple changes: - Query_Processor stored the resultset of query rules loaded to runtime (previously this was only for query rules fast routing) - Admin returns the stored resultset (query rules and fast routing) when queries by Cluster - In khash replaced the hashing function from the built-in __ac_X31_hash_string to CityHash32 - When Cluster is used, it calls load_mysql_query_rules_to_runtime() passing the resultsets retrieved by the remote peer - Increased SQLite cache_size to ~50MB: this seems to be a very small optimization and probably it will be reverted - pull_mysql_query_rules_from_peer() uses transactions to write to mysql_query_rules_fast_routing - (important change) pull_mysql_query_rules_from_peer() verifies the checksum of MySQL Query ules before loading them to runtime
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Multiple changes:
(previously this was only for query rules fast routing)
when queries by Cluster
__ac_X31_hash_string to CityHash32
the resultsets retrieved by the remote peer
and probably it will be reverted
to mysql_query_rules_fast_routing
of MySQL Query ules before loading them to runtime