diff options
| -rw-r--r-- | buildscripts/resmokelib/core/programs.py | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/buildscripts/resmokelib/core/programs.py b/buildscripts/resmokelib/core/programs.py index 8d5e4c622ca..2739f057ce1 100644 --- a/buildscripts/resmokelib/core/programs.py +++ b/buildscripts/resmokelib/core/programs.py @@ -106,7 +106,7 @@ def get_default_log_component_verbosity_for_mongod(executable): return default_mongod_log_component_verbosity() -def mongod_program( # pylint: disable=too-many-branches +def mongod_program( # pylint: disable=too-many-branches,too-many-statements logger, executable=None, process_kwargs=None, **kwargs): """Return a Process instance that starts mongod arguments constructed from 'kwargs'.""" @@ -125,6 +125,14 @@ def mongod_program( # pylint: disable=too-many-branches suite_set_parameters[ "logComponentVerbosity"] = get_default_log_component_verbosity_for_mongod(executable) + # minNumChunksForSessionsCollection controls the minimum number of chunks the balancer will + # enforce for the sessions collection. If the actual number of chunks is less, the balancer will + # issue split commands to create more chunks. As a result, the balancer will also end up moving + # chunks for the sessions collection to balance the chunks across shards. Unless the suite is + # explicitly prepared to handle these background migrations, set the parameter to 1. + if "configsvr" in kwargs and "minNumChunksForSessionsCollection" not in suite_set_parameters: + suite_set_parameters["minNumChunksForSessionsCollection"] = 1 + # orphanCleanupDelaySecs controls an artificial delay before cleaning up an orphaned chunk # that has migrated off of a shard, meant to allow most dependent queries on secondaries to # complete first. It defaults to 900, or 15 minutes, which is prohibitively long for tests. |