[SERVER-37056] Blacklist shard_existing_coll_chunk_count.js from last_stable suite Created: 07/Sep/18  Updated: 29/Oct/23  Resolved: 26/Sep/18

Status: Closed
Project: Core Server
Component/s: Sharding
Affects Version/s: None
Fix Version/s: 4.1.4

Type: Bug Priority: Major - P3
Reporter: Matthew Saltz (Inactive) Assignee: Janna Golden
Resolution: Fixed Votes: 0
Labels: sharding-wfbf-day
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Depends
Backwards Compatibility: Fully Compatible
Operating System: ALL
Sprint: Sharding 2018-10-08
Participants:
Linked BF Score: 4

 Description   

In mixed version 4.0/4.2 clusters, both mongos and shards will be triggering autosplits for chunks. In the case of this test, sometimes mongos will trigger a split for a chunk that no longer exists (because of concurrent splits or because its routing info is stale), but when it does this, it prevents the shard from acquiring the dist lock when it attempts to do the split for the chunk we're actually expecting to split. So, the shard gets a LockBusy error on trying to acquire the dist lock, and we don't end up with as many chunks as we were expecting. This behavior is not incorrect, but it is difficult to avoid in this test, so we can just blacklist it for the last stable suite.



 Comments   
Comment by Githook User [ 26/Sep/18 ]

Author:

{'name': 'jannaerin', 'email': 'golden.janna@gmail.com', 'username': 'jannaerin'}

Message: SERVER-37056 Blacklist shard_existing_coll_chunk_count.js from last_stable suite
Branch: master
https://github.com/mongodb/mongo/commit/7afaf92c0139274a71eaed81211505888f9d760c

Comment by Githook User [ 26/Sep/18 ]

Author:

{'name': 'jannaerin', 'email': 'golden.janna@gmail.com', 'username': 'jannaerin'}

Message: SERVER-37056 Blacklist shard_existing_coll_chunk_count.js from last_stable suite
Branch: master
https://github.com/mongodb/mongo/commit/82aa5b5c45919d89ce791bca3e11cc82c3b91311

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