[HDFS-11766] Fix findbugs warning in branch-2.7

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.7.4
• Target Version/s: 2.7.4
• Hadoop Flags: Reviewed
• Assignee: Chen Liang
• Reporter: Akira Ajisaka
• Created: 08/May/17 18:36
• Updated: 09/May/17 16:24
• Resolved: 09/May/17 16:24

Description

There are 1 findbugs warning in branch-2.7.
https://builds.apache.org/job/PreCommit-HDFS-Build/19204/artifact/patchprocess/branch-findbugs-hadoop-hdfs-project_hadoop-hdfs-warnings.html

Inconsistent synchronization of org.apache.hadoop.hdfs.DFSOutputStream.bytesCurBlock; locked 96% of time
Bug type IS2_INCONSISTENT_SYNC
In class org.apache.hadoop.hdfs.DFSOutputStream
Field org.apache.hadoop.hdfs.DFSOutputStream.bytesCurBlock
Synchronized 96% of the time
Unsynchronized access at DFSOutputStream.java:[line 2009]
Synchronized access at DFSOutputStream.java:[line 2376]
(snip)

Issue Links

• is broken by: HDFS-11608 HDFS write crashed with block size greater than 2 GB