[HDFS-5171] NFS should create input stream for a file and try to share it with multiple read requests

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.3.0
• Component/s: nfs
• Hadoop Flags: Reviewed
• Assignee: Haohui Mai
• Reporter: Brandon Li
• Created: 08/Sep/13 20:50
• Updated: 24/Feb/14 20:57
• Resolved: 25/Oct/13 00:06

Description

Currently, NFS creates an input steam for each read request and closes it after the request is served. With lots of read request, the overhead is significant.

Like for write request, NFS should create input stream for a file and try to share it with multiple read requests. The stream can be closed if there is no read request for a certain amount of time (e.g., 10 sec).

Issue Links

• is related to: HDFS-5415 Add more unit tests for the inputstream cache