Thanks for the explanations, very helpful. One more question, what is the sequence to delete the collection? If I use the rest api to delete the collection, then when I go to create it again, I sometimes get an error message saying shard already present. How to clean up the underlying directories on all the nodes?
Thanks, Abhi On Mon, Mar 26, 2018 at 6:22 PM, Shawn Heisey <apa...@elyograg.org> wrote: > On 3/26/2018 8:43 AM, Abhi Basu wrote: > > Running on MS HDInsight and Solr 4.9.What is the BKM for creation, > update, > > delete of configurations and collections? > > I have no idea what a BKM is. I will cover the update of configuration > below. > > > I do the following: > > > > 1. First I create the zk config: > > sudo zkcli.sh -cmd upconfig -zkhost zknode > > <http://zk1-esohad.tzun3mpncofedp04lr3ird23xc.jx.internal.cloudapp.net/ > >:2181 > > -confdir /home/sshuser/ems-collection-49/conf/ -confname ems-collection > > Exactly what you've got configured there for the zkhost parameter is > difficult to decipher because it looks like the hsotname got replaced > with a URL by your mail client. But I think you've only got one ZK > server there. Usually there are at least three of them. The command > actually only needs one, but the zkHost string usually has at least > three. It's generally a good idea to use the same string for zkcli that > you use for Solr itself, so it works even when a server is down. > > > 2. Then I create the collection: > > curl ' > > http://headnode0:8983/solr/admin/collections?action= > CREATE&name=ems-collection&numShards=2&replicationFactor= > 2&maxShardsPerNode=1 > > ' > > > > This works the first time. When I change the zk config, do I run the same > > command #1? Also, do I do a reload: > > Yes, if you want to change an existing config and then make it active, > you re-upload the config and then reload any affected collection. > Deleting and recreating the collection is not something you would want > to do unless you plan to completely rebuild it anyway -- deleting the > collection will also delete all the index data. If that's what you > WANT, then deleting and recreating the collection is a good way to make > it happen. Many config updates *do* require a reindex, and some changes > will also require completely deleting the index directories before > building it again. > > > Very familiar with CDH solrctl commands that make life easier by only > > having one command for this. Any help is appreciated. > > If you're using CDH, you'll want to talk to Cloudera for help. They > customize their Solr install to the point where they're the only ones > who know how to use it properly. > > Thanks, > Shawn > > -- Abhi Basu
