If the snapshot count of one store is greater than this value, it will never be used as a source or target store. Immutable, change should be made through pd-ctl after cluster creation Optional: Defaults to 3

Immutable, change should be made through pd-ctl after cluster creation Optional: Defaults to 16

If both the size of region is smaller than MaxMergeRegionSize and the number of rows in region is smaller than MaxMergeRegionKeys, it will try to merge with adjacent regions. Immutable, change should be made through pd-ctl after cluster creation Optional: Defaults to 20

Immutable, change should be made through pd-ctl after cluster creation Optional: Defaults to 200000

SplitMergeInterval is the minimum interval time to permit merge after split. Immutable, change should be made through pd-ctl after cluster creation Optional: Defaults to 1h

PatrolRegionInterval is the interval for scanning region during patrol. Immutable, change should be made through pd-ctl after cluster creation

MaxStoreDownTime is the max duration after which a store will be considered to be down if it hasn’t reported heartbeats. Immutable, change should be made through pd-ctl after cluster creation Optional: Defaults to 30m

LeaderScheduleLimit is the max coexist leader schedules. Immutable, change should be made through pd-ctl after cluster creation. Optional: Defaults to 4. Imported from v3.1.0

RegionScheduleLimit is the max coexist region schedules. Immutable, change should be made through pd-ctl after cluster creation Optional: Defaults to 2048

ReplicaScheduleLimit is the max coexist replica schedules. Immutable, change should be made through pd-ctl after cluster creation Optional: Defaults to 64

MergeScheduleLimit is the max coexist merge schedules. Immutable, change should be made through pd-ctl after cluster creation Optional: Defaults to 8

HotRegionScheduleLimit is the max coexist hot region schedules. Immutable, change should be made through pd-ctl after cluster creation Optional: Defaults to 4

HotRegionCacheHitThreshold is the cache hits threshold of the hot region. If the number of times a region hits the hot cache is greater than this threshold, it is considered a hot region. Immutable, change should be made through pd-ctl after cluster creation

TolerantSizeRatio is the ratio of buffer size for balance scheduler. Immutable, change should be made through pd-ctl after cluster creation. Imported from v3.1.0

 high space stage         transition stage           low space stage

|——————–|—————————–|————————-| ^ ^ ^ ^ 0 HighSpaceRatio capacity LowSpaceRatio capacity capacity

LowSpaceRatio is the lowest usage ratio of store which regraded as low space. When in low space, store region score increases to very large and varies inversely with available size. Immutable, change should be made through pd-ctl after cluster creation

HighSpaceRatio is the highest usage ratio of store which regraded as high space. High space means there is a lot of spare capacity, and store region score varies directly with used size. Immutable, change should be made through pd-ctl after cluster creation

DisableLearner is the option to disable using AddLearnerNode instead of AddNode Immutable, change should be made through pd-ctl after cluster creation

DisableRemoveDownReplica is the option to prevent replica checker from removing down replicas. Immutable, change should be made through pd-ctl after cluster creation

DisableReplaceOfflineReplica is the option to prevent replica checker from repalcing offline replicas. Immutable, change should be made through pd-ctl after cluster creation

DisableMakeUpReplica is the option to prevent replica checker from making up replicas when replica count is less than expected. Immutable, change should be made through pd-ctl after cluster creation

DisableRemoveExtraReplica is the option to prevent replica checker from removing extra replicas. Immutable, change should be made through pd-ctl after cluster creation

DisableLocationReplacement is the option to prevent replica checker from moving replica to a better location. Immutable, change should be made through pd-ctl after cluster creation

DisableNamespaceRelocation is the option to prevent namespace checker from moving replica to the target namespace. Immutable, change should be made through pd-ctl after cluster creation

Schedulers support for loding customized schedulers Immutable, change should be made through pd-ctl after cluster creation

Only used to display

EnableOneWayMerge is the option to enable one way merge. This means a Region can only be merged into the next region of it. Imported from v3.1.0

EnableCrossTableMerge is the option to enable cross table merge. This means two Regions can be merged with different table IDs. This option only works when key type is “table”. Imported from v3.1.0