svn commit: r1689105 - /lucene/dev/trunk/solr/CHANGES.txt

[an...@apache.org]

Author: andyetitmoves
Date: Fri Jul  3 22:54:39 2015
New Revision: 1689105

URL: http://svn.apache.org/r1689105
Log:
SOLR-7714: Add note about ShardHandler interface change to upgrade notes

Modified:
    lucene/dev/trunk/solr/CHANGES.txt

Modified: lucene/dev/trunk/solr/CHANGES.txt
URL: http://svn.apache.org/viewvc/lucene/dev/trunk/solr/CHANGES.txt?rev=1689105&r1=1689104&r2=1689105&view=diff
==============================================================================
--- lucene/dev/trunk/solr/CHANGES.txt (original)
+++ lucene/dev/trunk/solr/CHANGES.txt Fri Jul  3 22:54:39 2015
@@ -103,6 +103,17 @@ Upgrading from Solr 5.2
 * The "name" parameter in ADDREPLICA Collections API call has be deprecated. One cannot specify
   the core name for a replica. See SOLR-7499 for more info.
 
+* The ShardHandler interface has changed. The interface used to provide a
+  `checkDistributed` function which doubled up in purpose to determine if the
+  request is distributed, and to prepare for distributed requests. This unfortunately
+  meant that the object had to be instantiated even when the request is not
+  distributed. The task of initially determining if the request is distributed
+  is now done by SearchHandler using the distrib/shards parameters, and a
+  ShardHandler object is created only if the request is distributed. The interface
+  now has a `prepDistributed` function instead of the `checkDistributed` function,
+  which can then be used to prepare for the distributed request. Users with custom
+  ShardHandler implementations would need to modify their code to this effect.
+
 Detailed Change List
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