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https://issues.apache.org/jira/browse/HDFS-3697?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HDFS-3697:
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Description:
The fadvise features have been implemented for some time, and we've enabled
them in production at a lot of customer sites without difficulty. I'd like to
enable the readahead feature by default in future versions so that users get
this benefit without any manual configuration required.
The other fadvise features seem to be more workload-dependent and need further
testing before enabling by default.
was:The fadvise features have been implemented for some time, and we've
enabled them in production at a lot of customer sites without difficulty. I'd
like to enable them by default in future versions so that users get this
benefit without any manual configuration required.
> Enable fadvise readahead by default
> -----------------------------------
>
> Key: HDFS-3697
> URL: https://issues.apache.org/jira/browse/HDFS-3697
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: data-node, performance
> Affects Versions: 3.0.0, 2.2.0-alpha
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Minor
> Attachments: hdfs-3697.txt, hdfs-3697.txt
>
>
> The fadvise features have been implemented for some time, and we've enabled
> them in production at a lot of customer sites without difficulty. I'd like to
> enable the readahead feature by default in future versions so that users get
> this benefit without any manual configuration required.
> The other fadvise features seem to be more workload-dependent and need
> further testing before enabling by default.
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