[HADOOP-13214] sync(0); next(); yields wrong key-values on block-compressed files

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Component/s: io
• Labels: easyfix newbie patch
• Flags: Patch
• Assignee: Unassigned
• Reporter: Illes S
• Created: 29/May/16 17:59
• Updated: 02/Jun/16 16:37

Description

Calling sync(0); next(...); on a block-compressed SequenceFile.Reader that has already been used may not yield the key-values at the beginning, but those following the previous position. The issue is caused by sync(0) not releasing previously buffered keys and values. The issue was introduced by HADOOP-6196.