Uwe Schindler created LUCENE-5047:
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Summary: Trunk's NIOFSDir and MMapDir throw different Exception on
file not found cases because of use of FileChannel.open()
Key: LUCENE-5047
URL: https://issues.apache.org/jira/browse/LUCENE-5047
Project: Lucene - Core
Issue Type: Bug
Components: core/store
Affects Versions: 5.0
Reporter: Uwe Schindler
Assignee: Uwe Schindler
Fix For: 5.0
In trunk, we use FileChannel.open() when opening files from NIOFsDir and
MMapDirectory. These methods (all new APIs in Java 7) throw
java.nio.file.NoSuchFileException if an File does not exist. The old-style
FileNotFoundException is only thrown by old APIs.
We have to decide how to creectly document the expected behaviour in the
abstract Directory interface and how we fix this.
The new Exceptions are more specific, so you get the "correct" exception (it
may happen with old apis that you get FNFE if you open a file where you have no
access because it is locked...). With Java 7's FileChannel.open() you get a
separate and correct Exception.
A posisble fix for now may be to try/catch for the new Exceptions in the 2
directory impls (there is also a try-with-resources there) and rethrow as FNFE.
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