BELUGA BEHR created HDFS-13812:
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Summary: Update Docs on Caching
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
{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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