Azure synapse spark start-up fail: CLUSTER_CREATION_TIMED_OUT: Livy session has failed.

Pieter Tjerkstra 5 Reputation points
2025-02-13T08:09:40.0633333+00:00

Since a few days none of my spark pools in Azure synapse analytics are able to start-up. After trying for 15 minutes to start, I either get this message:

LivySessionCreationTimeoutException: Livy session creation timed out. workspace: we-psch-a-data-syn, pool: wepschdatasprk, session id: 70

Or this message:

CLUSTER_CREATION_TIMED_OUT: Livy session has failed. Session state: Error. Error code: CLUSTER_CREATION_TIMED_OUT.

[plugins.we-psch-a-data-syn.wepschdatasprk.68 WorkspaceType:<Synapse> CCID:<779e0f73-8ced-4cf1-9fd2-abeb7ba5f8fd>] 
Attempt=[1]/[3]Cluster was in terminal state=[Cancelled] before it reached 'Ready' state. 
Cluster job has WorkspaceName=[we-psch-a-data-syn], SpecName=[wepschdatasprk], and JobId=[85479d1c-eb62-4fb2-bbe3-728791426c4c]. Source: Dependency.

Do you have any clues how to solve this?

I tried different cluster sizes, a new spark pool and a new infrastructure release.

Azure Synapse Analytics
Azure Synapse Analytics
An Azure analytics service that brings together data integration, enterprise data warehousing, and big data analytics. Previously known as Azure SQL Data Warehouse.
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