Metric collection
BookKeeper enables metrics collection through a variety of stats providers.
Stats providers
BookKeeper has stats provider implementations for four five sinks:
| Provider | Provider class name |
|---|---|
| Codahale Metrics | org.apache.bookkeeper.stats.CodahaleMetricsProvider |
| Prometheus | org.apache.bookkeeper.stats.prometheus.PrometheusMetricsProvider |
| Finagle | org.apache.bookkeeper.stats.FinagleStatsProvider |
| Ostrich | org.apache.bookkeeper.stats.OstrichProvider |
| Twitter Science Provider | org.apache.bookkeeper.stats.TwitterStatsProvider |
The Codahale Metrics stats provider is the default provider.
Enabling stats providers in bookies
Two stats-related configuration parameters are available for bookies:
| Parameter | Description | Default |
|---|---|---|
enableStatistics | Whether statistics are enabled for the bookie | false |
statsProviderClass | The stats provider class used by the bookie | org.apache.bookkeeper.stats.CodahaleMetricsProvider |
To enable stats:
- set the
enableStatisticsparameter totrue - set
statsProviderClassto the desired provider (see the table above for a listing of classes)