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abergs's avatar
abergs
Copper Contributor
May 02, 2019
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Behavior while scaling cluster

Hi,   I'm looking for information regarding cluster behavior while scaling. What I've seen in my tests is that query performance is severely impacted (I'd call it downtime) for a couple of minutes ...
Azure Data Explorer (Kusto)
Cluster Management
  • gabil's avatar
    gabil
    May 03, 2019

    abergs 

    Hi,

    During scaling operations that cluster goes through deployment; therefore it is not answering queries for a short time and does not ingest data. The data queued for ingestion will be ingested as soon as the cluster is up again.

    I'll add this to one of our official docs.

     

    Thanks,

    Gabi

abergs's avatar
abergs
Copper Contributor
May 03, 2019
Follow up question: Is the ingestion endpoint affected by this re-deployment (with failures) or is the ingestion simply queued and delayed?
gabil's avatar
gabil
Icon for Microsoft rankMicrosoft
May 03, 2019

abergs 

The ingestion is delayed until the cluster is up and running and then it continues from the same point.

 

Thanks,

Gabi

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