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https://issues.apache.org/jira/browse/HDFS-10277?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15236019#comment-15236019
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Steve Loughran commented on HDFS-10277:
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What's failing here is a file of size zero, with a {{read(new buf[0], 0, 0))}}
That is: it's returning -1, "no data", rather than 0 "you didn't ask for
anything".
Fixing the code *and* clarifying the behaviour, based on that defined in
`java.io.inputstream`: the check for zero remaining bytes comes ahead of the
check for the end of file
> PositionedReadable test testReadFullyZeroByteFile failing in HDFS
> -----------------------------------------------------------------
>
> Key: HDFS-10277
> URL: https://issues.apache.org/jira/browse/HDFS-10277
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: test
> Affects Versions: 2.8.0
> Environment: Jenkins
> Reporter: Steve Loughran
> Assignee: Steve Loughran
>
> Jenkins is failing after HADOOP-12994,
> {{che.hadoop.fs.contract.AbstractContractSeekTest.testReadFullyZeroByteFile(AbstractContractSeekTest.java:373)}}
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