The metrics4j from kairosdb

metrics4j's Introduction

KairosDB is a fast distributed scalable time series database written on top of Cassandra.

Documentation

Documentation is found here.

Frequently Asked Questions

Installing

Download the latest KairosDB release.

Installation instructions are found here

If you want to test KairosDB in Kubernetes please follow the instructions from KairosDB Helm chart.

Getting Involved

Join the KairosDB discussion group.

Contributing to KairosDB

Contributions to KairosDB are very welcome. KairosDB is mainly developed in Java, but there's a lot of tasks for non-Java programmers too, so don't feel shy and join us!

What you can do for KairosDB:

KairosDB Core: join the development of core features of KairosDB.
Website: improve the KairosDB website.
Documentation: improve our documentation, it's a very important task.

If you have any questions about how to contribute to KairosDB, join our discussion group and tell us your issue.

License

The license is the Apache License 2.0

metrics4j's People

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metrics4j's Issues

Add tag filter

Add ability to both filter and rename tags

Add plugin for OTLP Support

Metrics4j needs a plugin to support sending metrics to an otel collector.

NaN metric values prevent any metrics from being reported

This was happening with the Kairos plugin and may happen with others as well. Found this while using JMXReporter to report Cassandra metrics and the mean came back as NaN.

LinkageError when using plugins

An example of this error is shown below when using the Kairos plugin while reporting JMX metrics from Cassandra:
Caused by: java.lang.LinkageError: loader constraint violation: when resolving method "org.slf4j.impl.StaticLoggerBinder.getLoggerFactory()Lorg/slf4j/ILoggerFactory;" the class loader (instance of org/kairosdb/metrics4j/configuration/PluginClassLoader) of the current class, org/slf4j/LoggerFactory, and the class loader (instance of sun/misc/Launcher$AppClassLoader) for the method's defining class, org/slf4j/impl/StaticLoggerBinder, have different Class objects for the type org/slf4j/ILoggerFactory used in the signature

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