We are implementing an Index Lifecycle Policy each month to reindex our daily indexes into a monthly index using the _reindex api
From https://www.elastic.co/blog/managing-time-based-indices-efficiently has good notes but wanted to get ideas as to, whether:
Is it better to forcemerge the daily index at the end of each day and then reindex these at the end of each month?
Reindex into the monthly index and then forcemerge this index?
We have IoT data coming from our devices with about ~2 million documents per day and I am looking at best ways to maintain these indexes.
Any advice is much appreciated