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Diffstat (limited to 'src/mongo/db/s/balancer/balancer.h')
| -rw-r--r-- | src/mongo/db/s/balancer/balancer.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/mongo/db/s/balancer/balancer.h b/src/mongo/db/s/balancer/balancer.h index da54de484ac..6fd8b7fbc4b 100644 --- a/src/mongo/db/s/balancer/balancer.h +++ b/src/mongo/db/s/balancer/balancer.h @@ -183,10 +183,15 @@ private: bool _checkOIDs(OperationContext* opCtx); /** - * Iterates through all chunks in all collections and ensures that no chunks straddle tag - * boundary. If any do, they will be split. + * Iterates through all chunks in all collections. If the collection is the sessions collection, + * checks if the number of chunks is greater than or equal to the configured minimum number of + * chunks for the sessions collection (minNumChunksForSessionsCollection). If it isn't, + * calculates split points that evenly partition the key space into N ranges (where N is + * minNumChunksForSessionsCollection rounded up the next power of 2), and splits any chunks that + * straddle those split points. If the collection is any other collection, splits any chunks + * that straddle tag boundaries. */ - Status _enforceTagRanges(OperationContext* opCtx); + Status _splitChunksIfNeeded(OperationContext* opCtx); /** * Schedules migrations for the specified set of chunks and returns how many chunks were |