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From richardg <>
Subject Solr 4.3 and above core swap
Date Thu, 15 Aug 2013 13:27:01 GMT
Since upgrading to solr 4.3 we get the following errors on our slaves when we
swap cores on our master and is still an issue on 4.4:

Solr index directory
'/usr/local/solr_aggregate/solr_aggregate/data/index.20130513152644966' is
locked.  Throwing exception

SEVERE: Unable to reload core: production
org.apache.solr.common.SolrException: Index locked for write for core

SEVERE: Could not reload core 
org.apache.solr.common.SolrException: Unable to reload core: production

On older solr versions it would create a new index.* directory and use it,
it hasn't been the case w/ 4.3+.  The new core seems to replicate fine and
the new index files are in the original index.* directory so I'm not sure
what is happening.

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