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

Tajdar Siddiqui siddiqut at gmail.com
Wed Apr 2 15:30:31 UTC 2008


Hi,

We are evaluating GFS for use as a highly concurrent distributed file
system.

What I have observed:

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.
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