[COMPASS-6729] Investigate changes in PM-3318: More Astute Balancer M1: Enable Faster Add and Remove Shard Created: 18/Apr/23  Updated: 01/Jun/23  Resolved: 01/Jun/23

Status: Closed
Project: Compass
Component/s: None
Affects Version/s: None
Fix Version/s: No version

Type: Investigation Priority: Major - P3
Reporter: Backlog - Core Eng Program Management Team Assignee: Unassigned
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Depends
Documentation Changes: Not Needed

 Description   
Original Downstream Change Summary

Planning on making changes to the balancer so additional documentation will be needed

Description of Linked Ticket

Epic Summary

Summary

The balancer will be updated so that customers can utilize the faster add and remove shard machinery that Replication is building in PM-2322

Motivation

The current data migration when adding or removing a shard, chunk migration, is too slow. Customers are greatly disappointed with the current migration speeds they experience today. With an updated balancer that can leverage the faster data migration machinery customers will be able to move 1TB of data to/from a shard in a day or less which now takes nearly a month (without concurrency).

Documentation

Product Description
Scope
Technical Design
Docs Update


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