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https://issues.apache.org/jira/browse/HDFS-13812?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16603899#comment-16603899
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Xiao Chen commented on HDFS-13812:
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+1. Thanks [~belugabehr] for reporting and [~hgadre] for fixing the issue.
> Fix the inconsistent default refresh interval on Caching documentation
> -----------------------------------------------------------------------
>
> Key: HDFS-13812
> URL: https://issues.apache.org/jira/browse/HDFS-13812
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: documentation
> Affects Versions: 2.9.1
> Reporter: BELUGA BEHR
> Assignee: Hrishikesh Gadre
> Priority: Trivial
> Attachments: HDFS-13812-001.patch
>
>
> {quote}
> dfs.namenode.path.based.cache.refresh.interval.ms
> The NameNode will use this as the amount of milliseconds between subsequent
> path cache rescans. This calculates the blocks to cache and each DataNode
> containing a replica of the block that should cache it.
> By default, this parameter is set to 300000, which is five minutes.
> {quote}
> [https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/CentralizedCacheManagement.html]
> However, this default value was change in [HDFS-6106] to 30 seconds. Please
> update docs.
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