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Posted to notifications@shardingsphere.apache.org by GitBox <gi...@apache.org> on 2019/10/12 10:16:42 UTC
[GitHub] [incubator-shardingsphere] tuohai666 commented on issue #3097:
Unknown system variable 'query_cache_size'
tuohai666 commented on issue #3097: Unknown system variable 'query_cache_size'
URL: https://github.com/apache/incubator-shardingsphere/issues/3097#issuecomment-541310633
1. If we want to change the version of mysql-connector-java from 5.x to 8.x, we should also update the HikariCP. Because HikariCP-**java7** at 2.4.11 in Sharding-Proxy now does not compatible with mysql-connector-java 8.x.
2. If we want to upgrade HikariCP, we should also update the Java version from 1.7 to 1.8.
3. Connector/J 8.x also requires Java 1.8
So, to resolve this problem we should firstly answer the question that when we upgrade the Java 1.7 to 1.8?
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