[SERVER-16540] Potential race in migration can have an aborted migration consume MigrateStatus::_cloneLocs Created: 12/Dec/14  Updated: 06/Dec/22  Resolved: 01/Feb/16

Status: Closed
Project: Core Server
Component/s: Sharding
Affects Version/s: 2.8.0-rc2
Fix Version/s: None

Type: Bug Priority: Major - P3
Reporter: Randolph Tan Assignee: [DO NOT USE] Backlog - Sharding Team
Resolution: Duplicate Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Duplicate
duplicates SERVER-20290 Recipient shard for migration can con... Closed
Related
is related to SERVER-16432 Chunk migration data structures not p... Closed
Assigned Teams:
Sharding
Operating System: ALL
Sprint: Sharding 10 (02/19/16)
Participants:

 Description   

There are cases where the donor shard can abort the migration without contacting the recipient shard. If it starts another migration before the recipient shard realizes it, then it can call _cloneMigrate against the donor shard and interfere with the new migration. A similar issue exist for _transferMods as well.


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