[Swift-user] Swift-MosaStore integration problem

[Emalayan Vairavanathan]

Thank you Mike, I was using STrace but it seems very complex to find the bug. So we are now using the profiler to mimic file system and comparing the input and output of its fuse callbacks with Mosa.

Also I agree with you that Mosa is doing something wired.

Regards
Emalayan



________________________________
From: Michael Wilde <wilde at mcs.anl.gov>
To: Emalayan Vairavanathan <svemalayan at yahoo.com>
Cc: swift-user at ci.uchicago.edu
Sent: Thursday, 27 October 2011 12:57 PM
Subject: Re: [Swift-user] Swift-MosaStore integration problem

Emalyan, can you use strace on the Swift jvm invocation to trave Java's systems calls, and debug it in that manner?

I suspect that Mosa is doing something that's not quite POSIX compliant, and confusing Java and hence Swift.

- Mike


----- Original Message -----
> From: "Emalayan Vairavanathan" <svemalayan at yahoo.com>
> To: swift-user at ci.uchicago.edu
> Sent: Thursday, October 27, 2011 2:35:13 PM
> Subject: [Swift-user] Swift-MosaStore integration problem
> Dear All,
> 
> 
> 
> 
> 
> 
> 
> When I try to run the HelloWorld.swift with MosaStore (MosaStore is a
> distributed storage developed by us) it is terminating with an error.
> 
> 
> 
> Here HelloWorld.swift script is copied into the MosaStore filesystem.
> Also Swift has write permission in the file system. Because it can
> create some temporary files (swift.log and
> first-20111026-1848-hmo97vu7.log). But then it prints the error below
> and terminates (I have attached the log files. I am using swift 0.93).
> 
> 
> 
> Max heap: 259522560
> Recompilation suppressed.
> Detailed exception:
> java.io.FileNotFoundException: /tmp/mount/dir1/first.kml (No such file
> or directory)
> at java.io.FileInputStream.open(Native Method)
> at java.io.FileInputStream.<init>(FileInputStream.java:137)
> at java.io.FileInputStream.<init>(FileInputStream.java:96)
> at java.io.FileReader.<init>(FileReader.java:58)
> at org.globus.cog.karajan.Loader.load(Loader.java:209)
> at org.griphyn.vdl.karajan.Loader.main(Loader.java:157)
> Could not start execution.
> /tmp/mount/dir1/first.kml (No such file or directory)
> 
> 
> It seems the Mosastore didnt receive any callback to create first.kml.
> I think, due to some reasons JVM assumes the storage is not available
> and terminate the swift program. So I am wondering whether you can
> provide any hint about this issue.
> 
> Also I would like to build the swift in debug mode in order to run it
> with jdb (to get more information). Please let me know how to build
> the swift in debug mode?
> 
> 
> Thank you
> Emalayan
> 
> 
> 
> 
> 
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> Swift-user at ci.uchicago.edu
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-- 
Michael Wilde
Computation Institute, University of Chicago
Mathematics and Computer Science Division
Argonne National Laboratory
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