Jason Polites wrote:
I've also seen FileNotFound exceptions when attempting a search on an index
while it's being updated, and the searcher is in a different JVM. This is
supposed to be supported, but on Windows seems to regularly fail (for me
anyway).
Note that this use case (accessing one shared Lucene index from
different JVMs even on different machines) is supposed to work, but
there are known issues on certain platforms/filesystems.
For example, see this post for recent progress on intermittent file
renaming errors some people hit on Windows:
http://www.gossamer-threads.com/lists/lucene/java-user/39974
And see this for progress on getting Lucene to work over NFS (and
likely other remote filesystems):
http://issues.apache.org/jira/browse/LUCENE-673
And finally we are working on small changes to Lucene's file format so
that the commit lock (a source of quite a few issues) is not necessary
("lock-less commits"), to prevent the various problems people have
with locking (and NFS!):
http://www.gossamer-threads.com/lists/lucene/java-dev/39112?do=post_view_threaded#39112
We would like to the bottom of all such low-level robustness cases so
if you are hitting unexplained exceptions that don't seem to fit into
one of these three cases (windows renaming errors; nfs errors; locking
errors) please reply to this! Thanks.
Mike
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