[system test] Indexer resident memory growing upto 8G

1. Create setup, wait for initial index build complete on each empty bucket.
2. Load 10M data on default and start up tpcc loadder ( currently at < 100K items on the other 9 buckets.

Seeing indexer process taking up high memory in a considerably short period of time ( < 30 mins)

Attached is a screenshot from the atop on one of the indexer node.

• At a time, only 3 buckets have data being loaded onto them , ie 3 indexes are being built?

attaching screenshots