[Hadoop-common-dev] [jira] Created: (HADOOP-3945) IPC server should not hold a client's response queue lock while writing response back to a client

IPC server should not hold a client's response queue lock while writing response back to a client
-------------------------------------------------------------------------------------------------

Key: HADOOP-3945
URL: https://issues.apache.org/jira/browse/HADOOP-3945
Project: Hadoop Core
Issue Type: Improvement
Components: dfs
Reporter: Hairong Kuang

Currently the IPC server holds a client's response queue lock while writing response back to a client. This unnecessary held lock prevents handlers from queuing a reply to the response queue when a reply is being written to the client.