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Re: [Linux-cluster] writing to GFS from multiple JVM's concurrently



On Wed, 2 Apr 2008, Tajdar Siddiqui wrote:

When 2 JVM's  (multiple Threads per Java Virtual Machine) are writing to the same directory
on GFS, on of the JVM doesn't see the files it writes on the GFS.
The Writer Threads on JVM think they're done, but the files don't show up on "ls" etc.
The other JVM works fine.

This problem goes away if the 2 JVM's write to different directories on GFS

OR

Only one JVM is writing at a time.

Any ideas on this.

This may sound like a daft question, but did you test it on ext3? Are the JVMs on the same node? What locking protocol are you using?

Gordan

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