stormkafkamon

stormkafkamon dumps the state of Apache Storm Kafka consumer spouts, showing how far behind each is behind, relative to the Kafka partition it is consuming. Once running it presents output like so:

monitor.py --zserver zookeeper0 --topology  NoBoltsTopology --spoutroot testroot --friendly
+--------+-------+-----------+----------+-------------+--------+------------------------+-------------+----------+
| Broker | Topic | Partition | Earliest |    Latest   | Depth  |         Spout          |   Current   |  Delta   |
+--------+-------+-----------+----------+-------------+--------+------------------------+-------------+----------+
| kafka0 |  raw  |     0     |    0     | 12044626844 | 11.2GB | kafkaspout--61816062-0 | 12044445134 | 177.5KB  |
| kafka0 |  raw  |     1     |    0     | 12020309626 | 11.2GB | kafkaspout--61816062-0 | 12019988928 | 313.2KB  |
| kafka0 |  raw  |     2     |    0     | 12049894170 | 11.2GB | kafkaspout--61816062-0 | 12049312832 | 567.7KB  |
| kafka0 |  raw  |     3     |    0     | 12059079262 | 11.2GB | kafkaspout--61816062-0 | 12059079262 | 0.0bytes |
| kafka1 |  raw  |     0     |    0     | 12074374700 | 11.2GB | kafkaspout--61816062-0 | 12074200350 | 170.3KB  |
| kafka1 |  raw  |     1     |    0     | 12105806506 | 11.3GB | kafkaspout--61816062-0 | 12105806506 | 0.0bytes |
| kafka1 |  raw  |     2     |    0     | 12059575506 | 11.2GB | kafkaspout--61816062-0 | 12059258012 | 310.1KB  |
| kafka1 |  raw  |     3     |    0     | 12116313670 | 11.3GB | kafkaspout--61816062-0 | 12115976730 | 329.0KB  |
+--------+-------+-----------+----------+-------------+--------+------------------------+-------------+----------+

Number of brokers:       2
Number of partitions:    8
Total broker depth:      89.9GB
Total delta:             1.8MB

This tool could be used to perform simple monitoring of spout throughput.

Tested against Kafka 0.72 and Storm 0.82 (along with associated Kafka spout from storm-contrib), running on Ubuntu 12.04.

Requirements

After cloning, run pip install stormkafkamon, or just

pip install https://github.com/otoolep/stormkafkamon/zipball/master

Program implementation

The code iterates through all Spout entries in Zookeeper, and retrieves all details. It then contacts each Kafka broker listed in those details, and queries for the earliest available offset, and latest, of each partition. This allows it to display the details shown in the example.