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https://issues.apache.org/jira/browse/HDFS-8633?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14592008#comment-14592008
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Yongjun Zhang commented on HDFS-8633:
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Good catch [~rchiang], it should be 4M, 4194304. Thanks.
> Fix mismatch for default value of dfs.datanode.readahead.bytes in
> DFSConfigKeys
> -------------------------------------------------------------------------------
>
> Key: HDFS-8633
> URL: https://issues.apache.org/jira/browse/HDFS-8633
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: HDFS
> Affects Versions: 2.7.0
> Reporter: Ray Chiang
> Assignee: Ray Chiang
> Priority: Minor
> Labels: newbie, supportability
>
> Found this using the XML/Config verifier. One of these properties has two
> digits swapped.
> XML Property: dfs.datanode.readahead.bytes
> XML Value: 4193404
> Config Name: DFS_DATANODE_READAHEAD_BYTES_DEFAULT
> Config Value: 4194304
> What is the intended value?
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