kimmking commented on issue #4240: java.util.LinkedHashMap cannot be cast to org.apache.shardingsphere.orchestration.yaml.config.YamlDataSourceConfiguration URL: https://github.com/apache/incubator-shardingsphere/issues/4240#issuecomment-585162923 And I find one thing: If we start proxy with a yaml configuring datasources, proxy server will transform datasources with YamlDatasourceConfiguration object and marshal it to string with type, then send to zk. Proxy server then use the config parameters from zk, so YamlDatasourceConfiguration type always here in datasource config string. If you modify datasource config via zk-cli or ShardingSphere-UI, the type info must be preserved.
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