ZanderXu opened a new pull request, #4542: URL: https://github.com/apache/hadoop/pull/4542
### Description of PR Jira ID: [HADOOP-13144](https://issues.apache.org/jira/browse/HADOOP-13144) The generic IPC client (org.apache.hadoop.ipc.Client) utilizes a single connection thread for each ConnectionId. The ConnectionId is unique to the connection's remote address, ticket and protocol. Each ConnectionId is 1:1 mapped to a connection thread by the client via a map cache. The result is to serialize all IPC read/write activity through a single thread for a each user/ticket + address. If a single user makes repeated calls (1k-100k/sec) to the same destination, the IPC client becomes a bottleneck. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
