[HDFS-6097] zero-copy reads are incorrectly disabled on file offsets above 2GB

• Type: Bug
• 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
• Assignee: Colin McCabe
• Reporter: Colin McCabe
• Created: 12/Mar/14 21:44
• Updated: 10/Apr/14 13:11
• Resolved: 13/Mar/14 22:31

Description

Zero-copy reads are incorrectly disabled on file offsets above 2GB due to some code that is supposed to disable zero-copy reads on offsets in block files greater than 2GB (because MappedByteBuffer segments are limited to that size).