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https://issues.apache.org/jira/browse/HADOOP-19400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17948005#comment-17948005
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ASF GitHub Bot commented on HADOOP-19400:
-----------------------------------------
cnauroth commented on PR #7367:
URL: https://github.com/apache/hadoop/pull/7367#issuecomment-2837385218
Hello @ahmarsuhail . I think the answer here is that a read to a negative
offset is considered an error by the caller:
https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/shell/Display.java#L430-L438
I wasn't sure if you were considering documentation updates for this. If so,
I would help get that committed.
> Expand specification and contract test coverage for InputStream reads.
> ----------------------------------------------------------------------
>
> Key: HADOOP-19400
> URL: https://issues.apache.org/jira/browse/HADOOP-19400
> Project: Hadoop Common
> Issue Type: Improvement
> Components: documentation, fs, test
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.5.0, 3.4.2
>
>
> This issue is a spin-off from HADOOP-19389, specifically [this code review
> discussion|https://github.com/apache/hadoop/pull/7291#discussion_r1920495312].
> We can enhance the FS specification and contract tests to cover expected
> semantics of the {{InputStream}} single-byte and multi-byte read methods:
> * Multi-byte read should validate the arguments passed to it, according to
> the pattern established in the JDK base {{InputStream}} class.
> * You should get the same bytes whether going through single-byte or
> multi-byte read.
> * It is legal to mix calls to single-byte and multi-byte read, and this
> should also yield the same bytes.
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