Is it possible to some how rerun a force_merge?
We have been force merging our data, however we recently learned about setting "index.codec" to "best_compression" to potentially gain space from an index.
However since we have already force_merged to 1 segment per shard, we cant force_merge again to take advantage of the codec.
We are on 5.2.1. My friend who told me about "index.codec" is on 2.3.x and said they were able to rerun forcemerging even though the index had been merged down to 1 segment/shard.
I tried raising the max_num_segments but that didnt work, since it was the max, not the min.
Is the only way out of this to reindex?