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https://issues.apache.org/jira/browse/HADOOP-18407?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17581546#comment-17581546
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ASF GitHub Bot commented on HADOOP-18407:
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mukund-thakur commented on PR #4760:
URL: https://github.com/apache/hadoop/pull/4760#issuecomment-1219977111
CC @steveloughran
> Improve vectored IO api spec.
> ------------------------------
>
> Key: HADOOP-18407
> URL: https://issues.apache.org/jira/browse/HADOOP-18407
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs, fs/s3
> Reporter: Mukund Thakur
> Priority: Minor
> Labels: pull-request-available
>
> Let's add more details to the vectored IO api spec for better clarity.
> * the position returned by getPos(); is undefined afterwards.
> * note that if a file is changed during a read, the output is again
> undefined. some ranges may be old data, some may be new, *and some may be both
> * note that while reads are active, normal fs api calls may block.
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