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The following page has been changed by ShalinMangar: http://wiki.apache.org/solr/SolrReplication The comment on the change is: Added note on using compression on repeaters ------------------------------------------------------------------------------ A master may be able to serve only so many slaves without affecting performance. Some organizations have deployed slave servers across multiple data centers. If each slave downloads the index from a remote data center, the resulting download may consume too much network bandwidth. To avoid performance degradation in cases like this, you can configure one or more slaves as repeaters. A repeater is simply a node that acts as both a master and a slave. * To configure a server as a repeater, both the master and slave configuration lists need to be present inside the !ReplicationHandler requestHandler in the solrconfig.xml file. * Be sure to have replicateAfter 'commit' setup on repeater even if replicateAfter is set to optimize on the main master. This is because on a repeater (or any slave), only a commit is called after index is downloaded. Optimize is never called on slaves. + * Optionally, one can configure the repeater to fetch compressed files from the master through the 'compression' parameter (see 'slave' section for details) to reduce the index download time. Example configuration of a repeater: {{{
