On 6/1/2018 7:23 AM, Greenhorn Techie wrote: > We are running SolrCloud with version 5.5.4. As I understand, Solr > Collection Backup and Restore API are only supported from version 6 > onwards. So wondering what is the best mechanism to get our collections > backed-up on older Solr version.
That functionality was added in 6.1. https://issues.apache.org/jira/browse/SOLR-5750 > When I ran backup command on a particular node (curl > http://localhost:8983/solr/gettingstarted/replication?command=backup) it > seems it only creates a snapshot for the collection data stored on that > particular node. Does that mean, if I run this command for every node > hosting my SolrCloud collection, I will be getting the required backup? > Will this backup the metadata as well from ZK? I presume not. If you provide a location parameter, it will write a new backup directory in that location. https://lucene.apache.org/solr/guide/6_6/making-and-restoring-backups.html#standalone-mode-backups I verified that this parameter is in the 5.5 docs too, I would suggest you download that version in PDF format if you want a full reference. It would probably be a good idea to create a separate directory for each core that you work on. If the backup is done on all the right cores, you will get all the index data, but you will have no info from ZK. If the collection has more than one shard and uses the compositeId router, then you will need the info frpom the collection's clusterstate aabout hash shard ranges, and those would have to be verified and possibly adjusted on the new collection before you started putting the data back in. If the new collection uses different hash ranges than the one you backed up, then the restored collection would not function correctly. > If so, what > are the best possible approaches to get the same. Is there something made > available by Solr for the same? If you can do it, upgrading to the latest 6.x or 7.x version would be a good idea, to have full SolrCloud backup and restore functionality. -------------- You asked me some questions via IRC when I wasn't around, then were logged off by the time I got back to IRC. I don't know when you might come back online there. Here's some info for those questions: The reason that 'ant server' isn't working is that you're at the top level of the source. It should work if you change to the solr directory first. Similar to what you've encountered, I can't get eclipse to work properly when using a downloaded 6.6.2 source package (solr-6.6.2-src.tgz). But if I use these commands instead, then import into eclipse, it works: git clone https://git-wip-us.apache.org/repos/asf/lucene-solr.git cd lucene-solr git checkout refs/tags/releases/lucene-solr/6.6.2 ant clean clean-jars clean-eclipse eclipse The clean targets are not strictly necessary with a fresh clone, but that works even when the tree isn't fresh. I've never had very good luck with the downloadable source packages. Some of the build system functionality *only* works when the source is obtained with git, so I prefer that. Thanks, Shawn
