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https://issues.apache.org/jira/browse/HDFS-5191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13765720#comment-13765720
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Suresh Srinivas commented on HDFS-5191:
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bq. The overhead of using varargs seems excessive (up to 30x timing wise and
way more garbage created for the temp arrays using Sun JDK 1.6.0.39) for a
performance API.
While varargs might be expensive, in the context of current API, I do not think
the cost you are alluding to seems exaggerated. That said, from clean API
perspective, if an EnumSet can get the job done, it might be better.
> revisit zero-copy API in FSDataInputStream to make it more intuitive
> --------------------------------------------------------------------
>
> Key: HDFS-5191
> URL: https://issues.apache.org/jira/browse/HDFS-5191
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client, libhdfs
> Affects Versions: HDFS-4949
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
>
> As per the discussion on HDFS-4953, we should revisit the zero-copy API to
> make it more intuitive for new users.
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