990063d2af
Contributed by Steve Loughran. This FileSystem instantiation so if an IOException or RuntimeException is raised in the invocation of FileSystem.initialize() then a best-effort attempt is made to close the FS instance; exceptions raised that there are swallowed. The S3AFileSystem is also modified to do its own cleanup if an IOException is raised during its initialize() process, it being the FS we know has the "potential" to leak threads, especially in extension points (e.g AWS Authenticators) which spawn threads. Change-Id: Ib84073a606c9d53bf53cbfca4629876a03894f04
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