Yes, I use the nfs mount to share the index for other search instance
and all the instances have same lock directory configured, but the only
the difference is that nfs mount is read-only mount, so I have to
disable the lock mechanism for search instances, only lock is enabled
for index modification instance. We have 6 jboss cluster for our
application. so 5 instances of jboss search on the same index and the
6th instance used for index update.
supriya
Michael McCandless wrote:
I think its a directory access synchronisation problem, I have also
posted about this before. The scenario can be like this ..
When Indexwriter object is created it reads the segment information
from the file "segments" which nothing but list of files with .cfs or
mayn more type, at teh same time IndexSearcher object is created
which also make a list of index files from segements file, then you
invoke the some write operation which triggers the index pemrging,
fragmenting etc started haoppening and it modifies the file list in
the segments file, but still we have the IndexerSearcher object with
old file list and probably that throws the FileNotFoundExcpetion
becuase physically the file is not there.
May be I am wrong but I try to put some light on this issue.
I posted the similar problem with subject "FileNotFoundException:
occurs during the optimization of index", I am also experiencing the
similar problem when the index optimization task runs on the index
and parallally search function is also running.
Lucene has file-based locking for exactly this reason. Can you
double-check that the same lockDir is being used in both your
IndexModifier process and your searching process?
Also: this directory can't be an NFS mount -- there are known problems
with the current Lucene locking implementation and NFS file systems.
Are you using NFS?
Mike
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