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https://issues.apache.org/jira/browse/HADOOP-18189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17620367#comment-17620367
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ASF GitHub Bot commented on HADOOP-18189:
-----------------------------------------
steveloughran merged PR #5036:
URL: https://github.com/apache/hadoop/pull/5036
> S3PrefetchingInputStream to support status probes when closed
> -------------------------------------------------------------
>
> Key: HADOOP-18189
> URL: https://issues.apache.org/jira/browse/HADOOP-18189
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.4.0
> Reporter: Steve Loughran
> Assignee: Viraj Jasani
> Priority: Minor
> Labels: pull-request-available
>
> S3PrefetchingInputStream is a bit over aggressive on raising
> exceptions/downgrading responses after a stream is closed
> * MUST: getPos() to return last read location, or a least 0 (maybe we should
> add this to filesystem spec)
> * MUST: getIOStatistics(). critical for collecting stats in processes
> * MUST: seekToNewSource() (it's a no op anyway)
> * MAY S3AInputStreamStatistics and getStreamStatistics() though that is only
> in used in testing...ioStatistics have given us a stable stats api. we may
> want to tag the method @VisibleForTesting to discourage use.
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