Influx unexpected error writing points to database: engine: cache-max-memory-size exceeded: (1073894145/1073741824)

[durandom]

2023-09-04T16:10:19Z E! [outputs.influxdb_v2] When writing to [http://influxdb2:8086]: 500 Internal Server Error: internal error: unexpected error writing points to database: engine: cache-max-memory-size exceeded: (1073831987/1073741824)

This is from the telegraf log.

restarting influx did the job, but what was this and why?

oc rollout restart deploy/influxdb2

[durandom]

2023-12-02T13:27:03Z E! [outputs.influxdb_v2] When writing to [http://influxdb2:8086]: 500 Internal Server Error: internal error: unexpected error writing points to database: engine: cache-max-memory-size exceeded: (1073894145/1073741824)
2023-12-02T13:27:03Z D! [outputs.influxdb_v2] Buffer fullness: 1000 / 10000 metrics

just happened again 🤷