[HADOOP-6577] IPC server response buffer reset threshold should be configurable

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.22.0
• Fix Version/s: 0.21.0
• Hadoop Flags: Incompatible change, Reviewed

Release Note

Add hidden configuration option "ipc.server.max.response.size" to change the default 1 MB, the maximum size when large IPC handler response buffer is reset.

• Assignee: Suresh Srinivas
• Reporter: Suresh Srinivas
• Created: 19/Feb/10 01:50
• Updated: 24/Aug/10 20:42
• Resolved: 20/Feb/10 01:24

Description

In HDFS-6460, the response buffers in o.a.h.ipc.Server.Handler was reset when the buffer grows beyond max size of 1MB. This frees heap from large responses occupying it. This max response size limit should be configurable. Details in subsequent comment.

Issue Links

• is related to: HADOOP-6460 Namenode runs of out of memory due to memory leak in ipc Server
• is related to: HDFS-985 HDFS should issue multiple RPCs for listing a large directory