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https://issues.apache.org/jira/browse/HDFS-16973?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Íñigo Goiri resolved HDFS-16973.
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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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