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https://issues.apache.org/jira/browse/LUCENE-10149?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17424651#comment-17424651
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Robert Muir commented on LUCENE-10149:
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I looked at the BaseDirectoryTestCase + subclass. It looks pretty good.
The BaseDirectoryTestCase has tests for each method, aligned, unaligned, etc.
But it isn't obvious to me all the boundary cases are added. I want something
that looks like the TestMultiMMap for this class, too. I think it can be
factored into test-framework to aid in testing these "array of buffers" where
you have boundary conditions? I gotta look into it more.
> ByteBuffersDataInput should override readShort/Int/Long
> -------------------------------------------------------
>
> Key: LUCENE-10149
> URL: https://issues.apache.org/jira/browse/LUCENE-10149
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Robert Muir
> Priority: Major
> Attachments: LUCENE-10149.patch,
> Screen_Shot_2021-10-05_at_14.05.42.png
>
>
> ByteBuffersDataInput currently only optimizes the absolute {{readShort(long
> pos)}}, {{readInt(long pos)}}, {{readLong(long pos)}}.
> This is good because these are e.g. used by docvalues.
> On the other hand it should also optimize the relative {{readShort()}},
> {{readInt()}}, and {{readLong()}} in the same way. In some cases these are
> performance sensitive too. For example, the postings list compression uses
> {{readLong()}}.
> Looking at the code, this seems to be a simple oversight.
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