[HDFS-11379] DFSInputStream may infinite loop requesting block locations

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.7.0
• Fix Version/s: 2.8.0, 2.7.4, 3.0.0-alpha4
• Component/s: hdfs-client
• Target Version/s: 2.9.0, 3.0.0-alpha4, 2.8.1
• Hadoop Flags: Reviewed
• Assignee: Daryn Sharp
• Reporter: Daryn Sharp
• Created: 27/Jan/17 20:08
• Updated: 25/Oct/19 20:24
• Resolved: 17/Feb/17 23:41

Description

DFSInputStream creation caches file size and initial range of locations. If the file is truncated (or replaced) and the client attempts to read outside the initial range, the client goes into a tight infinite looping requesting locations for the nonexistent range.