[HDFS-13509] Bug fix for breakHardlinks() of ReplicaInfo/LocalReplica, and fix TestFileAppend failures on Windows - ASF JIRA

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Details

Type: Bug
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 2.10.0, 3.2.0, 3.1.1, 2.9.2, 3.0.3
Component/s: None
Labels:
- windows

Hadoop Flags:

Reviewed

Description

breakHardlinks() of ReplicaInfo(branch-2)/LocalReplica(trunk) replaces file while the source is still opened as input stream, which will fail and throw exception on Windows. It's the cause of unit test case org.apache.hadoop.hdfs.TestFileAppend#testBreakHardlinksIfNeeded failure on Windows.

Other test cases of TestFileAppend fail randomly on Windows due to sharing the same test folder, and the solution is using randomized base dir of MiniDFSCluster via ~~HDFS-13408~~