A refinement to that. The replica database will generate index information only when it receives fragments from the master database, and does not do any reindexing on its own.
That said, the advice of changing the replica first and then the master is correct. When the master does its reindexing, it will replicate the reindexed fragments to the replica database, which will then also generate new index information. If you change the master's settings before the replica's, you're in danger of having improperly indexed fragments on the replica. As a result, you may not be able to use some of the range indexes in queries on the replica. If/when you deconfigure database replication, the replica database would then reindex as needed. Wayne. On 09/28/2014 11:20 PM, Michael Blakeley wrote: > Change the replica first, then the master. Each will index independently. > > -- Mike > > On Sep 28, 2014, at 23:04, [email protected] <mailto:[email protected]> > wrote: > >> I tried to search for the answer, but couldn't find it, I would >> appreciate if any of you could direct me to the correct chunk of >> documentation to find this out: >> >> We have two node ML7 setup where one of the nodes is master and other >> slave using database replication matched by the database name. (This >> is NOT flexible replication) >> >> We execute queries to both hosts 24/7 but obviously write only to the >> primary one. >> >> We often need to add new indexes to the system and the (multi >> part) question is: >> >> 1. Does ML replicate the index definitions between hosts? >> 2. Does ML replicate the indexes themselves between the hosts? >> 3. What's the correct procedure to add a new index in this setup? >> >> We currently add the indexes by hand, starting from the slave. We >> noticed that the slave does not initiate automatic reindexing, even >> though we have "reindexer enable" set to true and figured it's better >> to add the new index to slave first so that it will be there when the >> primary starts reindexing. >> >> So, is it required at all to add the indexes first to slave, or will >> ML take care of the configuration changes via the replication also or >> does that include only data? >> >> Ville >> _______________________________________________ >> General mailing list >> [email protected] <mailto:[email protected]> >> http://developer.marklogic.com/mailman/listinfo/general > > > _______________________________________________ > General mailing list > [email protected] > http://developer.marklogic.com/mailman/listinfo/general -- Wayne Feick Principal Engineer MarkLogic Corporation [email protected] Phone: +1 650 655 2378 www.marklogic.com This e-mail and any accompanying attachments are confidential. The information is intended solely for the use of the individual to whom it is addressed. Any review, disclosure, copying, distribution, or use of this e-mail communication by others is strictly prohibited. If you are not the intended recipient, please notify us immediately by returning this message to the sender and delete all copies. Thank you for your cooperation.
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