|Description||TAG_HASHING_BUCKETS Environment Variable|
Humio supports auto-grouping of tags using this configuration variable and
Humio checks the number of distinct values for each key in each tag
MAX_DISTINCT_TAG_VALUES at regular
intervals. If this threshold is exceeded, a new grouping rule is added
with the modulus set to the value set in
TAG_HASHING_BUCKETS, but only if there is no rule for that
You can configure rules using the Cluster Management API and decide the number of buckets there. This is preferable to auto-detecting, as the auto-detection works after the fact and thus leaves a large number of unused data sources that will need to get deleted by retention at some point. The auto-grouping support is meant as a safety measure to avoid suddenly creating many data sources by mistake for a single tag key.
See the Cluster Management API documentation page for more information.