diff --git src/main/docbkx/cp.xml src/main/docbkx/cp.xml index 7062d7d..9dd909a 100644 --- src/main/docbkx/cp.xml +++ src/main/docbkx/cp.xml @@ -402,6 +402,27 @@ coprocessors=[AggregateImplementation]
+ Monitor Time Spent in Coprocessors + HBase 0.98.5 introduced the ability to monitor some statistics relating to the amount of + time spent executing a given coprocessor. You can see these statistics via the HBase Metrics + framework (see or the Web UI for a given Region Server, via + the Coprocessor Metrics tab. These statistics are valuable for debugging + and benchmarking the performance impact of a given coprocessor on your cluster. Tracked + statistics include min, max, average, and 90th, 95th, and 99th percentile. +
+ Coprocessor Metrics UI + + + + + + The Coprocessor Metrics UI shows statistics about time spent executing a given + processor, including min, max, average, and 90th, 95th, and 99th percentile. + + +
+
+
Status of Coprocessors in HBase Coprocessors and the coprocessor framework are evolving rapidly and work is ongoing on several different JIRAs.