Index Drop and Rebuild Execution Time

Hello All,

Is there a rule of thumb for how long an index removal and replacement on a large collection takes? I need to rebuild an index on a collection with 86 billion documents in it and need to scope out downtime. Any help would be appreciated. I have a 9 shard cluster hosted on r5.xlarge AWS EC2’s. Each server utilizes a 4TB EBS volume rated for 12000 IOPS.

Hi @Ian_Beck,
as far as I know for the drop there isn’ t effort time, but when you restore the index, depends on how many index you’ ve to restoring and in how many data you’ re restoring this index. So is difficulty to estimate how many time you need for create the index!


1 Like

I figured that might be the answer, thanks for the help Fabio.

1 Like