[HDFS-3596] Improve FSEditLog pre-allocation in branch-1

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.1.0
• Fix Version/s: 1.1.0, 1.2.0
• Target Version/s: 1.2.0
• Assignee: Colin McCabe
• Reporter: Colin McCabe
• Created: 03/Jul/12 21:11
• Updated: 02/May/13 21:52
• Resolved: 09/Jul/12 06:35

Description

Implement HDFS-3510 in branch-1. This will improve FSEditLog preallocation to decrease the incidence of corrupted logs after disk full conditions. (See HDFS-3510 for a longer description.)

Issue Links

• is related to: HDFS-4782 backport edit log corruption toleration to branch-1-win
• relates to: HDFS-3510 Improve FSEditLog pre-allocation
• relates to: HDFS-3961 FSEditLog preallocate() needs to reset the position of PREALLOCATE_BUFFER when more than 1MB size is needed
• requires: HDFS-3595 TestEditLogLoading fails in branch-1