Hi,
 
I have some concern with solr using hard link to perform snapshot and
backup on the indexing box.
 
When referring to snapshot in contexts other than solr, it usually mean
some database state which can be revert to when necessary.  Since solr
use hard link to create snapshot on the master indexing box, the older
snapshot image could change if Lucene changed any file shared between
the index directory and the snapshot directory.  This would mean that
the snapshot or backup may not be the same state as when the snapshot or
backup were taken.
 
Can some one confirm or clarify?
 
Daniel Wu
 

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