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Posted to hdfs-dev@hadoop.apache.org by "Íñigo Goiri (Jira)" <ji...@apache.org> on 2023/04/05 21:08:00 UTC
[jira] [Resolved] (HDFS-16973) RBF: MountTableResolver cache size lookup should take read lock
[ https://issues.apache.org/jira/browse/HDFS-16973?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Íñigo Goiri resolved HDFS-16973.
--------------------------------
Fix Version/s: 3.4.0
Hadoop Flags: Reviewed
Resolution: Fixed
> RBF: MountTableResolver cache size lookup should take read lock
> ---------------------------------------------------------------
>
> Key: HDFS-16973
> URL: https://issues.apache.org/jira/browse/HDFS-16973
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Viraj Jasani
> Assignee: Viraj Jasani
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
>
> Mount table resolver location cache gets invalidated by taking write lock as part of addEntry/removeEntry/refreshEntries calls. Since the write lock exclusively updates the cache, getDestinationForPath already takes read lock before accessing the cache. Similarly, retrieval of the cache size should also take the read lock.
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