有人可以帮助我了解 Percona 在安装后立即建议的这三个功能的用途和好处吗?
* Percona XtraDB Cluster is distributed with several useful UDF (User Defined Function) from Percona Toolkit.
* Run the following commands to create these functions:
mysql -e "CREATE FUNCTION fnv1a_64 RETURNS INTEGER SONAME 'libfnv1a_udf.so'"
mysql -e "CREATE FUNCTION fnv_64 RETURNS INTEGER SONAME 'libfnv_udf.so'"
mysql -e "CREATE FUNCTION murmur_hash RETURNS INTEGER SONAME 'libmurmur_udf.so'"
* See http://www.percona.com/doc/percona-server/5.7/management/udf_percona_toolkit.html for more details
我从来没有找到清楚解释这些功能的文档,以及您从中获得的好处/优势。