On 6/22/2021 11:45 AM, Stephen Lewis Bianamara wrote:
However, SOLR 8 looks to have a different behavior wherein the index is perhaps updated in place, and thus a 100GB / shard index might only need a bit more headroom (call it 110GB say). Is this always the case with recovery on SOLR 8+? Or are there some situations where you might need 200GB for the recovery?
The general recommendation, for normal operation and not just recovery, is to ensure you have enough space available so that the index can triple in size temporarily. The 3x requirement only comes about with a very specific set of circumstances involving reindexing in-place on an existing index -- for MOST usage, you want enough space for the index to double in size temporarily. But because we cannot be sure how you are going to use Solr, we always err on the side of caution and tell people the index could triple in size before it goes back down.
Thanks, Shawn
