returns the vbts map and the associated lock on the map caller needs to lock the lock appropriatedly before using the map.

Statistics of a pipeline which may or may not be runningReturns a list of expVar.Map where the idx corresponds to the pipeline Type, so it's possible for one elem to be nil.

configuration settings.

keys for metrics that do not monotonically increase during replication, to which the "going backward" check should not be applied.

factors affecting bandwidth limit of the current node, which could be updated through UpdateSettings() call.

keys for metrics in overview.

stats to clear when replications are paused 1.

stats to initialize for paused replications that have never been run -- mostly the stats visible from UI.

the fixed user agent string for connections to collect stats for paused replications it is possible to construct the user agent string dynamically by adding source and target bucket info to it it would cause many string re-allocations, though.

BandwidthThrottler limits bandwidth usage of replication.

StatisticsManager mount the statics collector on the pipeline to collect raw statsIt does stats correlation and processing on raw stats periodically (controlled by publish_interval), then stores the result in expvarThe result in expvar can be exposed to outside via different channels - log or to ns_server.

0th element is Main pipeline Vbs->CkptDocs 1st element is Backfill pipeline.