[HADOOP-4997] workaround for tmp file handling on DataNodes in 0.18 (HADOOP-4663)

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.18.0
• Fix Version/s: 0.18.3
• Hadoop Flags: Incompatible change
• Release Note: Revert tmp files handling on DataNodes back to 0.17. sync() introduced in 0.18 has less gaurantees.
• Assignee: Raghu Angadi
• Reporter: Raghu Angadi
• Created: 08/Jan/09 20:21
• Updated: 08/Jul/09 16:43
• Resolved: 16/Jan/09 23:56

Description

This is a temporary work around issues discussed in HADOOP-4663.

The proposal is to remove all the files under tmp directory, thus bringing the behavior back to 0.17. The main cost is that sync() will not be supported. This is incompatible with 0.18.x, but not with 0.17 because of this reason.

Issue Links

• is part of: HDFS-142 In 0.20, move blocks being written into a blocksBeingWritten directory
• is related to: HADOOP-5225 workaround for tmp file handling on DataNodes in 0.19.1 (HADOOP-4663)