My ES Server has 1.4TB of data (6B documents). Reindex API (increasing shard count) is taking forever, in 12 hours it's only done 40GB. Is there anything i can do to speed things up?
Things i've done:
Set refresh interval to -1 (After reindex started)
Current buffer size is 10% (31GB RAM = 3.1GB)
The server is 4tb SSD, 64GB RAM, Intel i7-7700K
Anything i can do to speed this up?