[GitHub] [shardingsphere] azexcy commented on issue #24874: CDC client Usage

["azexcy (via GitHub)" <gi...@apache.org>]

azexcy commented on issue #24874:
URL: https://github.com/apache/shardingsphere/issues/24874#issuecomment-1486188244

   ```
   11:55:39.913 [nioEventLoopGroup-2-1] INFO org.apache.shardingsphere.data.pipeline.cdc.client.handler.LoginRequestHandler - Server greeting result, server version: 5.3.2-SNAPSHOT, protocol version: 1
   11:55:39.958 [nioEventLoopGroup-2-1] INFO org.apache.shardingsphere.data.pipeline.cdc.client.handler.LoginRequestHandler - Login success, username root
   11:55:39.971 [nioEventLoopGroup-2-1] ERROR org.apache.shardingsphere.data.pipeline.cdc.client.handler.CDCRequestHandler - received error response status: FAILED
   error_code: "HY000"
   error_message: "Rule `ShardingRule` should have and only have one instance."
   ```
   
   Could you check you sharding rule config? also you can debug at `org.apache.shardingsphere.proxy.backend.handler.cdc.CDCBackendHandler#streamData`, and tell us why sharding rule isn't 1


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