[HADOOP-7753] Support fadvise and sync_data_range in NativeIO, add ReadaheadPool class

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.23.0
• Fix Version/s: 1.1.0, 0.23.0
• Component/s: io, native, performance
• Target Version/s: 0.23.0
• Hadoop Flags: Reviewed
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 18/Oct/11 02:23
• Updated: 17/Jul/12 21:32
• Resolved: 27/Oct/11 22:18

Description

This JIRA adds JNI wrappers for sync_data_range and posix_fadvise. It also implements a ReadaheadPool class for future use from HDFS and MapReduce.

Issue Links

• blocks: HDFS-2465 Add HDFS support for fadvise readahead and drop-behind