[jira] [Resolved] (HDFS-17394) [FGL] Remove unused WriteHoldCount of FSNamesystemLock

["Hui Fei (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-17394?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hui Fei resolved HDFS-17394.
----------------------------
    Resolution: Fixed

> [FGL] Remove unused WriteHoldCount of FSNamesystemLock
> ------------------------------------------------------
>
>                 Key: HDFS-17394
>                 URL: https://issues.apache.org/jira/browse/HDFS-17394
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: ZanderXu
>            Assignee: ZanderXu
>            Priority: Major
>              Labels: pull-request-available
>
> {code:java}
> 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 @Deprecated // dirLock is obsolete, use namesystem.fsLock instead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;
> } {code}
> getWriteHoldCount in FSNamesystem.java and FSDirectory.java is unused.
> dir.getReadHoldCount() is useless as it's same as fsn.getReadHoldCount().



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