On 5/18/2019 9:36 AM, tom_s wrote:
im aware that the best practice is to have disk space on your solr servers to be 2 times the size of the index. but my goal to minimize this overhead and have my index occupy more than 50% of disk space. in our index documents have TTL, so documents are deleted every day and it causes background merge of segments. can i change the merge policy and make the overhead of background merging lower? will limiting the number of concurrent merges help(with the maxMergeCount parameter)? do you know other methods that will help?
Actually the recommendation is to have enough space for the index to triple, not just double. This can happen in the wild.
There are no merge settings that can prevent situations where the index doubles in size temporarily due to merging. Chances are that it's going to happen eventually to any index.
Thanks, Shawn
