Top 10 Mistakes Made While Learning Solr

Last updated on Jan 8, 2018

1. Upgrading to the new major version right after its release without waiting for the inevitable .1 release
2. Explaining your, “I don’t need backups, I can always reindex” statement to your manager during an 8-hour reindexing session
3. Taking down the whole Data Center with a single rows=1000000000000000 request while singing, “I want it all / I want it now”
4. In a room full of Solr users wondering out loud why you’re not using Elasticsearch instead
5. Splitting shards like it’s 1999
6. Giving Solr’s JVM all the memory you’ve got and getting paged in the middle of the night
7. Running hundreds of queries with facet.mincount=0 and facet.limit=-1 and wondering why the YouTube videos you’re trying to watch are being buffered
8. Using shards=1 and replicationFactor=1 and wondering why only a single node in your hundred nodes cluster is being used
9. Optimizing after commits, hard committing every 5 seconds, using openSearcher=true and still wondering why your terminal is all slow
10. …and last but not least: not taking Sematext Solr guru @kucrafal’s upcoming Solr Online Training courses, covering from beginner to advanced level.