[HDFS-8386] Improve synchronization of 'streamer' reference in DFSOutputStream

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: hdfs-client
• Target Version/s: 2.8.0
• Assignee: Rakesh Radhakrishnan
• Reporter: Rakesh Radhakrishnan
• Created: 13/May/15 06:45
• Updated: 30/Aug/16 01:34
• Resolved: 02/Jun/15 22:42

Description

Presently DFSOutputStream#streamer object reference is accessed inconsistently with respect to synchronization. It would be good to improve this part. This has been noticed when implementing the erasure coding feature.

Please refer the related discussion thread in the jira HDFS-8294 for more details.

Issue Links

• is required by: HDFS-8294 Erasure Coding: Fix Findbug warnings present in erasure coding
• relates to: HDFS-8606 Cleanup DFSOutputStream by removing unwanted changes
• relates to: HDFS-8532 Make the visibility of DFSOutputStream#streamer member variable to private