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https://issues.apache.org/jira/browse/HADOOP-16317?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16850048#comment-16850048
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Da Zhou commented on HADOOP-16317:
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Thanks [[email protected]] for providing these valuable info, I tried similar
thing to ABFS as HADOOP-15229, I forced the driver to read in random mode for
HBASE but the result was not good enough. HADOOP-11867 is interesting, will
take a look when I have time.
> ABFS: improve random read performance
> -------------------------------------
>
> Key: HADOOP-16317
> URL: https://issues.apache.org/jira/browse/HADOOP-16317
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/azure
> Affects Versions: 3.2.0
> Reporter: Da Zhou
> Priority: Major
>
> Improving random read performance is an interesting topic. ABFS doesn't
> perform well when reading column format files as the process involves with
> many seek operations which make the readAhead no use, and if readAhead is
> used unwisely it would lead to unnecessary data request.
> Hence creating this Jira as a reminder to track the investigation and
> progress of the work.
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