[SERVER-43686] Biggie storage engine should support snapshot ids Created: 27/Sep/19  Updated: 27/Sep/19  Resolved: 27/Sep/19

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

Type: Bug Priority: Major - P3
Reporter: David Storch Assignee: David Storch
Resolution: Duplicate Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Duplicate
duplicates SERVER-43685 Biggie storage engine should support ... Closed
Operating System: ALL
Participants:

 Description   

There are a few places in the query engine which assume that all storage engines which return true for supportsDocLocking() also support RecoveryUnit::getSnapshotId():

This assumption does not hold for the biggie storage engine. This is currently causing query correctness issues leading to the failure of tests getmore_invalidated_documents.js and ensure_sorted.js. These failures were introduced by the code added in SERVER-42979 which assumed that doc-locking engines also support snapshot ids. There could be additional latent problems of a similar nature that have not yet been discovered.


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