Michael McCandless created LUCENE-5543:
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Summary: Remove Directory.fileExists
Key: LUCENE-5543
URL: https://issues.apache.org/jira/browse/LUCENE-5543
Project: Lucene - Core
Issue Type: Improvement
Components: core/store
Reporter: Michael McCandless
Assignee: Michael McCandless
Fix For: 4.8, 5.0
Since 3.0.x/3.6.x (see LUCENE-5541), Lucene has substantially removed
its reliance on fileExists to the point where I think we can fully
remove it now.
Like the other iffy IO methods we've removed over time (touchFile,
fileModified, seeking back during write, ...), File.exists is
dangerous because a low level IO issue can cause it to return false
when it should have returned true. The fewer IO operations we rely on
the more reliable/portable Lucene is.
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