On Sat, Aug 21, 2010 at 5:56 PM, Andrew Clegg <andrew.cl...@gmail.com>wrote:
> > Hi, > > First off, sorry about previous accidental post, had a sausage-fingered > moment. > > Anyway... > > If I merge two indices with CoreAdmin, as detailed here... > > http://wiki.apache.org/solr/MergingSolrIndexes > > What happens to duplicate documents between the two? i.e. those that have > the same unique key. > > What decides which copy takes precedence? Will documents get indexed > multiple times, or will the second one just get skipped? > > Also, does the behaviour vary between CoreAdmin and IndexMergeTool? This > thread from a couple of years ago: > > http://web.archiveorange.com/archive/v/AAfXfQIiBU7vyQBt6qdk > > suggests that IndexMergeTool can result in dupes, unless I'm > misinterpreting. > > Yes, it will result in duplicate docs. CoreAdmin and IndexMergeTool both use the IndexWriter#addIndexes method so the behavior will be same. -- Regards, Shalin Shekhar Mangar.
