Is Deletion in RamFileSystem (RamPath.delete()) Synchronous?

[Randall R Schulz]

Hi,

I'm seeing occasional occurrences of RamPath.delete() succeeding (throwing no exception) with an immediately following RamPath.exists (on the same RamPath, of course) returning true. It occurs fairly often on my Jenkins server but rarely on my laptop, so I get quite a few test failures on the build automation system but it's hard to reproduce on my development system.

Anyway, I'm wondering whether the call to delete() is synchronous? Might the occasional discrepancy between delete() and exists be a consequence of a race condition?


Randall Schulz

[jesse....@gmail.com]

I would not be surprised if there are race conditions.  I use the RamFileSystem primarily for testing in synchronous tests. 

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[Randall R Schulz]

Jesse,

Perhaps I should clarify... I'm not accessing the RamFileSystem instance from multiple threads.

Are you saying that RamFileSystem is not thread-safe?


Randall Schulz

[jesse....@gmail.com]

I am saying that I took basic care so it should be mostly thread safe, but that aspect has not been really carefully tested.  Making the FS be an actor would be a good way to make it completely safe.  To be honest the RamFS could use a better implementation.  But since it was mostly for my tests I didn’t take the time to exercise all corner cases.

 

Jesse

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[Randall R Schulz]

OK, but again, I'm not using it in a multi-threaded setting. I call delete(), no exception is thrown and immediately thereafter exists returns true. Is this normal? If so, what's the right way to confirm that deletion succeeded?


Randall Schulz

[jesse....@gmail.com]

Sorry for going off on a rant.  No that shouldn’t be normal.

 

From: Randall R Schulz
Sent: ‎March‎ ‎21‎, ‎2013 ‎4‎:‎10‎ ‎PM
To: scala-i...@googlegroups.com
Subject: Re: Is Deletion in RamFileSystem (RamPath.delete()) Synchronous?

 

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