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https://issues.apache.org/jira/browse/HDFS-8860?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15051708#comment-15051708
]
Hudson commented on HDFS-8860:
------------------------------
SUCCESS: Integrated in Hadoop-trunk-Commit #8952 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/8952/])
Revert "HDFS-8860. Remove unused Replica copyOnWrite code (Lei (Eddy) Xu (lei:
rev 7f393a6f61f5a34a1de11481ad321c6a941d5d27)
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/FinalizedReplica.java
* hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/TestDatanodeRestart.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaUnderRecovery.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaInfo.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/DataNodeTestUtils.java
*
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaWaitingToBeRecovered.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetTestUtil.java
*
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestFileAppend.java
> Remove unused Replica copyOnWrite code
> --------------------------------------
>
> Key: HDFS-8860
> URL: https://issues.apache.org/jira/browse/HDFS-8860
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 3.0.0, 2.8.0
> Reporter: Lei (Eddy) Xu
> Assignee: Lei (Eddy) Xu
> Fix For: 2.8.0
>
> Attachments: HDFS-8860.0.patch
>
>
> {{ReplicaInfo#unlinkBlock()}} is effectively disabled by the following code,
> because {{isUnlinked()}} always returns true.
> {code}
> if (isUnlinked()) {
> return false;
> }
> {code}
> Several test cases, e.g., {{TestFileAppend#testCopyOnWrite}} and
> {{TestDatanodeRestart#testRecoverReplicas}} are testing against the unlink
> Lets remove the relevant code to eliminate the confusions.
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