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From bradhill99 <>
Subject Solr 4.2 replcation whole index files mechanism.
Date Fri, 22 Mar 2013 07:56:17 GMT
 I use solrcloud 4.1. 
 I start up two solr nodes A and B and then created a new collection using
CoreAdmin to A using one shard, so Node A is leader. 
 Then I index some docs to it. Then I created the same collection using
CoreAdmin to B to become a replica. I found that solr will sync all index
files from A to B. 
 Under B's data dir, I have: index.20130318083415358 folder which has all
the synced index files,, and tlog
folder(empty inside). 
 Then I removed the collection from node B using CoreAdmin UNLOAD, I keep
all files in B's data dir, I didn't delete them. 
 Then I create the same collection from B again. I found that solr will sync
files from A to B AGAIN!!! 
 And there is another folder index.20130318084514166 been created under B's
data folder. 
 Actually I didn't index any docs to A after I UNLOAD collection on B. 
 So I wonder how to let solr know that B already has the correct index files
and not to do the sync again?

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