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1.2.11.2. Storm - Topology

Metrics that show the overall operating status for Storm topologies. Select a topology (by default, all topologies are selected) to view metrics for that topology.

Row

Metrics

Description

RECORDSAll Tasks Input/OutputInput Records is the number of input messages executed on all tasks, and Output Records is the number of messages emitted on all tasks.
All Tasks Acked TuplesNumber of messages acked (completed) on all tasks.
All Tasks Failed TuplesNumber of messages failed on all tasks.
LATENCY / QUEUEAll Spouts LatencyAverage latency on all spout tasks.
All Tasks QueueReceive Queue Population is the total number of tuples waiting in the receive queue, and Send Queue Population is the total number of tuples waiting in the send queue.
MEMORY USAGEAll workers memory usage on heapUsed bytes on heap for all workers in topology.
All workers memory usage on non-heapUsed bytes on non-heap for all workers in topology.
GCAll workers GC countPSScavenge count is the number of occurrences for parallel scavenge collector and PSMarkSweep count is the number of occurrences for parallel scavenge mark and sweep collector.
All workers GC timePSScavenge timeMs is the sum of the time parallel scavenge collector takes (in milliseconds), and PSMarkSweep timeMs is the sum of the time parallel scavenge mark and sweep collector takes (in milliseconds). Note that GC metrics are provided based on worker GC setting, so these metrics are only available for default GC option for worker.childopts. If you use another GC option for worker, you need to copy the dashboard and update the metric name manually.