# Fabric LH (Spark)

Revision 1 (11 October 2026) · Modeled snapshot · through 8 October 2026.

All figures are research-informed estimates of analytical activity. Significant errors may remain; decimal places do not imply measurement precision.

Layer: compute. Values cover the years in which this category appears in the public timeline. Absence is not proof of zero use.

## Names and inspection notes

### 2023–2026: Fabric LH (Spark)

Fabric Spark workloads only. Warehouse and Lakehouse SQL endpoint execution is included in the SQL Server family. The pooled Fabric workload is estimated as 50% SQL and 50% Spark.

## Annual estimates

| Year | Name in this year | Share of full compute layer | Connections and details |
| --- | --- | --- | --- |
| [2023](https://history.columnar.tech/years/2023.md) | Fabric LH (Spark) | 0.25% | [Inspect](https://history.columnar.tech/connections/2023/compute/fabric.md) |
| [2024](https://history.columnar.tech/years/2024.md) | Fabric LH (Spark) | 0.75% | [Inspect](https://history.columnar.tech/connections/2024/compute/fabric.md) |
| [2025](https://history.columnar.tech/years/2025.md) | Fabric LH (Spark) | 1% | [Inspect](https://history.columnar.tech/connections/2025/compute/fabric.md) |
| [2026](https://history.columnar.tech/years/2026.md) | Fabric LH (Spark) | 1.5% | [Inspect](https://history.columnar.tech/connections/2026/compute/fabric.md) |

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