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https://issues.apache.org/jira/browse/LUCENE-8415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16551298#comment-16551298
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Robert Muir commented on LUCENE-8415:
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I guess what I mean is, RAMDirectory is different because it lives in a bubble.
On the other hand FSDirectory shares a world with other applications (maybe
java, maybe not) and maybe even other computers in more ridiculous setups. So
java code in the Directory isn't really up for the task of enforcing, we need
OS help.
> Clean up Directory contracts (write-once, no reads-before-write-completed)
> --------------------------------------------------------------------------
>
> Key: LUCENE-8415
> URL: https://issues.apache.org/jira/browse/LUCENE-8415
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Dawid Weiss
> Assignee: Dawid Weiss
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Created a PR here for early review.
> https://github.com/apache/lucene-solr/pull/424
> I changed:
> * the wording in Directory documentation to be a bit more formalized about
> what rules a Directory should obey (and users expect).
> * modified the test framework to verify the above in mock classes.
> Currently a number of Directory implementations fail the
> {{testReadFileOpenForWrites}} test that I added, so I'll keep working on that.
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