[SERVER-31000] Investigate concurrency suite timeouts with causal consistency and secondary read preference Created: 08/Sep/17  Updated: 29/Jan/18  Resolved: 21/Nov/17

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

Type: Bug Priority: Major - P3
Reporter: Jack Mulrow Assignee: Misha Tyulenev
Resolution: Duplicate Votes: 0
Labels: sharding36-passthrough-testing
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Duplicate
duplicates SERVER-31934 Setting orphanCleanupDelaySecs=0 in o... Closed
Related
Backwards Compatibility: Fully Compatible
Operating System: ALL
Sprint: Sharding 2017-10-02, Sharding 2017-10-23, Sharding 2017-11-13, Sharding 2017-12-04
Participants:
Linked BF Score: 0

 Description   

In the causal consistency secondary read preference suite, there are a few workloads that sometimes timeout. Currently they are blacklisted, but their causes should be investigated so the tests can be re-enabled.

The known workloads are:

  • update_multifield_multiupdate_noindex.js
  • indexed_insert_multikey.js
  • indexed_insert_multikey_noindex.js

*note
For some of the failures, the fsm log output claims that the hung workload "completed" in roughly 6 hours, but this is misleading because if the test registers as timed out, attaching GDB to the hung process can cause the others to break out of their hang long enough for the workload to continue for a short period of time (possibly by changing their perception of that node to "down" instead of whatever was causing the hang). So even though some logs may claim the hung workload eventually completed, it's very likely it did not.



 Comments   
Comment by Jack Mulrow [ 08/Sep/17 ]

Two other timeouts for update_multifield_isolated_multiupdate_noindex.js:

https://evergreen.mongodb.com/task/mongodb_mongo_master_ubuntu1604_debug_asan_concurrency_sharded_causal_consistency_and_balancer_patch_a644bf58213f0786b8415277c1d54277b4f14581_59b04453e3c33147710011de_17_09_06_18_57_25/2

https://evergreen.mongodb.com/task/mongodb_mongo_master_osx_1010_ssl_concurrency_sharded_causal_consistency_and_balancer_WT_patch_a644bf58213f0786b8415277c1d54277b4f14581_59b04453e3c33147710011de_17_09_06_18_57_25/1

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