[HDFS-17028] RBF: Optimize debug logs of class ConnectionPool and other related class.

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.3.4
• Fix Version/s: 3.4.0
• Component/s: rbf
• Labels: pull-request-available
• Target Version/s: 3.4.0
• Hadoop Flags: Reviewed
• Assignee: farmmamba
• Reporter: farmmamba
• Created: 29/May/23 02:18
• Updated: 05/Jun/23 09:05
• Resolved: 05/Jun/23 09:05

Description

When we change the log level of RouterRpcClient from INFO to DEBUG to figure out which connection an user is using. We found logs below:

 

2023-05-29 09:46:09,033 DEBUG org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient: User someone NN ANN:8020 is using connection ClientNamenodeProtocolTranslatorPB@ANN/ANN_IP:8020x3
2023-05-29 09:46:09,037 DEBUG org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient: User someone NN ANN:8020 is using connection ClientNamenodeProtocolTranslatorPB@ANN/ANN_IP:8020x1
2023-05-29 09:46:09,037 DEBUG org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient: User someone NN ANN:8020 is using connection ClientNamenodeProtocolTranslatorPB@ANN/ANN_IP:8020x2
2023-05-29 09:46:09,037 DEBUG org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient: User someone NN ANN:8020 is using connection ClientNamenodeProtocolTranslatorPB@ANN/ANN_IP:8020x3
2023-05-29 09:46:09,042 DEBUG org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient: User someone NN ANN:8020 is using connection ClientNamenodeProtocolTranslatorPB@ANN/ANN_IP:8020x0 

It seems not very clear for us to figure out which connection user is using. Therefore, i think we should optimize the toString method of class ConnectionContext.

Issue Links

• links to: GitHub Pull Request #5694