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https://issues.apache.org/jira/browse/HADOOP-19596?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17993067#comment-17993067
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Steve Loughran commented on HADOOP-19596:
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only do this is if the read policy set in openFile() is whole-file or
sequential, as prefetching has minimal benefits for columnar data being
processed by query engines, while adding overhead and cost. Unless you have
benchmarking showing an advantage over vector io reads...
> ABFS: Increase Prefetch Aggressiveness to improve sequential read performance
> -----------------------------------------------------------------------------
>
> Key: HADOOP-19596
> URL: https://issues.apache.org/jira/browse/HADOOP-19596
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/azure
> Affects Versions: 3.5.0, 3.4.1
> Reporter: Anuj Modi
> Assignee: Anuj Modi
> Priority: Major
>
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