ZanderXu opened a new pull request, #6571:
URL: https://github.com/apache/hadoop/pull/6571
```
public int getWriteHoldCount() {
return this.fsLock.getWriteHoldCount(FSNamesystemLockMode.GLOBAL);
}
@Deprecated // dirLock is obsolete, use namesystem.fsLock instead
public int getWriteHoldCount() {
return namesystem.getWriteHoldCount();
}
// sanity check.
if (!hadDirReadLock || !hadFsnReadLock || hadDirWriteLock ||
hadFsnWriteLock || dir.getReadHoldCount() != 1 ||
fsn.getReadHoldCount() != 1) {
// cannot relinquish
return false;
}
```
`getWriteHoldCount` in FSNamesystem.java and FSDirectory.java is unused.
`dir.getReadHoldCount()` is useless as it's same as `fsn.getReadHoldCount()`.
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