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https://issues.apache.org/jira/browse/HDFS-16787?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17610784#comment-17610784
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ASF GitHub Bot commented on HDFS-16787:
---------------------------------------
ZanderXu opened a new pull request, #4948:
URL: https://github.com/apache/hadoop/pull/4948
### Description of PR
During patching the datanode fine-grained locking, found there is a
redundant lock in DataSetLockManager#removeLock, and the code as bellow:
```
@Override
public void removeLock(LockLevel level, String... resources) {
String lockName = generateLockName(level, resources);
try (AutoCloseDataSetLock lock = writeLock(level, resources)) {
// Here, this lock is redundant.
lock.lock();
lockMap.removeLock(lockName);
}
}
```
> Remove redundant lock in DataSetLockManager#removeLock in datanode.
> -------------------------------------------------------------------
>
> Key: HDFS-16787
> URL: https://issues.apache.org/jira/browse/HDFS-16787
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: ZanderXu
> Assignee: ZanderXu
> Priority: Major
>
> During patching the datanode fine-grained locking, found there is a redundant
> lock in DataSetLockManager#removeLock, and the code as bellow:
> {code:java}
> @Override
> public void removeLock(LockLevel level, String... resources) {
> String lockName = generateLockName(level, resources);
> try (AutoCloseDataSetLock lock = writeLock(level, resources)) {
> // Here, this lock is redundant.
> lock.lock();
> lockMap.removeLock(lockName);
> }
> } {code}
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