This topic lists the Dremio limits.

Type Limit Comments
Catalog 32k Size of fields in records.
Catalog 800 Number of columns in tables.
Source 50,000 The number of splits that can be processed for a single dataset (table) after partition pruning.
Source 250,000 The combined number of splits that can be processed from all datasets (tables) referenced in a query, after Dremio has pruned partitions for each dataset.
Configuration 25,000 Number of nodes in a query plan.
Workload Management 1000 Total number of executing and queued queries in the system.
Uploads 500MB The number of bytes that can be uploaded through the UI
Downloads 1M rows The number of rows that can be downloaded through the UI

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