[HDFS-6046] add dfs.client.mmap.enabled

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.0
• Fix Version/s: 2.4.0
• Component/s: hdfs-client
• Target Version/s: 2.4.0
• Hadoop Flags: Reviewed
• Assignee: Colin P. McCabe
• Reporter: Colin P. McCabe
• Created: 04/Mar/14 00:45
• Updated: 10/Apr/14 13:12
• Resolved: 04/Mar/14 06:46

Description

It would be nice to have a configuration variable, dfs.client.mmap.enabled. which would disable mmap reads in the client. This could come in handy for debugging or performance benchmarking.