[SERVER-60459] Implement merge chunks routine Phase II Created: 05/Oct/21  Updated: 17/Dec/21  Resolved: 17/Dec/21

Status: Closed
Project: Core Server
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Task Priority: Major - P3
Reporter: Simon Gratzer (Inactive) Assignee: Paolo Polato
Resolution: Duplicate Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Depends
depends on SERVER-61727 Implement the "move and merge chunks"... Closed
Related
related to SERVER-62161 Complete TODO listed in SERVER-60459 Closed
Sprint: Sharding EMEA 2021-10-18, Sharding EMEA 2021-12-13, Sharding EMEA 2021-12-27
Participants:

 Description   

Implement Phase 2 of the merge chunk routine according to the technical design

  • Move small chunks (< 25 % targetChunkSize) to larger contiguous chunks
  • Might have produced oversized chunks > target chunk size, so we split them
  • Convergence: If no more operations are queued inthen we reached convergence
  • return to the normal balancer mode

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