Pulsar topic large backlog storage size warning
The topic backlog storage size is over 5 GB
>>>
sum
(
> 5*1024*1024*1024) by (topic)
The rule evaluates sum(pulsar_storage_size > 5*1024*1024*1024) by (topic), which counts each topic whose pulsar_storage_size exceeds 5 GB; if the resulting sum for any topic is greater than zero, the alert fires, indicating that that topic's backlog storage is larger than 5 GB.
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