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Type: Task
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Resolution: Fixed
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Priority: Major - P3
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Affects Version/s: None
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Component/s: Testing Infrastructure
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None
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Fully Compatible
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v3.6
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TIG 2018-03-26
The "race-y" behavior is likely beneficial for the fuzzer's ability to find concurrency-related bugs around sessions. We should therefore enable the background refreshing of the logical session cache by explicitly setting mongod_options.set_parameters.disableLogicalSessionCacheRefresh=false in the following test suites:
- jstestfuzz.yml
- jstestfuzz_replication.yml
- jstestfuzz_replication_initsync.yml
- jstestfuzz_replication_resync.yml
- jstestfuzz_replication_session.yml
- jstestfuzz_sharded.yml
- jstestfuzz_sharded_causal_consistency.yml
- jstestfuzz_sharded_continuous_stepdown.yml
- jstestfuzz_sharded_session.yml
The following patch to the jstestfuzz_sharded.yml test suite would have immediately caught SERVER-33376 (as would running any sharding-related test suite that didn't require the use of the of the "refreshLogicalSessionCacheNow" command). Thanks to esha.maharishi for determining SERVER-33376 was missed due to how all MongoDB deployments started by both resmoke.py and the mongo shell specify --setParameter=disableLogicalSessionCacheRefresh=true.
diff --git a/buildscripts/resmokeconfig/suites/jstestfuzz_sharded.yml b/buildscripts/resmokeconfig/suites/jstestfuzz_sharded.yml
index 94b96613e2..7de220b60b 100644
--- a/buildscripts/resmokeconfig/suites/jstestfuzz_sharded.yml
+++ b/buildscripts/resmokeconfig/suites/jstestfuzz_sharded.yml
@@ -34,6 +34,7 @@ executor:
mongod_options:
set_parameters:
enableTestCommands: 1
+ disableLogicalSessionCacheRefresh: false
numInitialSyncAttempts: 1
writePeriodicNoops: 1
verbose: ''
# The LogicalSessionCache does automatic background refreshes in the server. This is # race-y for tests, since tests trigger their own immediate refreshes instead. Turn off # background refreshing for tests. Set in the .yml file to override this. if "disableLogicalSessionCacheRefresh" not in suite_set_parameters: suite_set_parameters["disableLogicalSessionCacheRefresh"] = True
https://github.com/mongodb/mongo/blob/r3.6.2/buildscripts/resmokelib/core/programs.py#L48-L52
https://github.com/mongodb/mongo/blob/r3.6.2/src/mongo/shell/servers.js#L1059-L1060
- is related to
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SERVER-33376 MongoDB 3.6.3-rc0 config server segfaults on startup
- Closed