Filters

Filters

In OpenTSDB 2.2 tag key and value filters were introduced. This makes it easier to extract only the data that you want from storage. The filter framework is plugable to allow for tying into external systems such as asset management or provisioning systems.

Multiple filters on the same tag key are allowed and when processed, they are ANDed together e.g. if we have two filters host=literal_or(web01) and host=literal_or(web02) the query will always return empty. If two or more filters are included for the same tag key and one has group by enabled but another does not, then group by will effectively be true for all filters on that tag key.

Note that some type of filters may cause queries to execute slower than others, e.g. the regex and wildcard filters. Before fetching data from storage, the filters are proc