Marvin Humphrey wrote:
On Jan 18, 2007, at 1:58 PM, Chuck Williams wrote:
How about a direct solution with a reference count scheme?
Segments files could be reference-counted,
There would have to be a file where the refcounts are maintained. The
problem is that if an IndexReader crashes, it could orphan a refcount,
so the files the reader was "using" would never get reclaimed.
How about if each reader were assigned a unique ID (eg hostname) by
the application, and wrote a file ($ID.inuse or something) into the
index dir referencing the segments_N that it's currently using? Say
the searcher/reader touches this file periodically so writer can
detect that a reader is no longer alive. This wouldn't require
locking (which scares me on NFS) and I think should work?
Mike
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