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https://issues.apache.org/jira/browse/HADOOP-19158?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Loughran updated HADOOP-19158:
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Summary: S3A: Support ByteBufferPositionedReadable through vector IO (was:
S3A: Support delegating ByteBufferPositionedReadable through vector IO)
> S3A: Support ByteBufferPositionedReadable through vector IO
> -----------------------------------------------------------
>
> Key: HADOOP-19158
> URL: https://issues.apache.org/jira/browse/HADOOP-19158
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs, fs/s3
> Affects Versions: 3.4.0
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Major
>
> Make it easy for any stream with vector io to support
> {{ByteBufferPositionedReadable}}
> Specifically, {{ByteBufferPositionedReadable.readFully()}}
> is exactly a single range read so is easy to read.
> the simpler read() call which can return less isn't part of the vector API.
> Proposed: invoke the readFully() but convert an EOFException to -1
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