# Standalone Parquet on local/shared filesystems · storage · 2023

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.

0.8575% of the full storage layer.

[Standalone Parquet on local/shared filesystems](https://history.columnar.tech/technologies/storage/parquet-local.md): historical names and annual shares.

## Contributions by compute engine

Each figure is a share of the full storage layer.

| Engine | Share of full storage layer | Engine connections |
| --- | --- | --- |
| [DuckDB](https://history.columnar.tech/technologies/compute/duckdb.md) | 0.5% | [Inspect engine](https://history.columnar.tech/connections/2023/compute/duckdb.md) |
| [Apache Spark (including Amazon EMR, Synapse Spark, and Google Cloud Dataproc)](https://history.columnar.tech/technologies/compute/spark.md) | 0.1% | [Inspect engine](https://history.columnar.tech/connections/2023/compute/spark.md) |
| [PostgreSQL family](https://history.columnar.tech/technologies/compute/postgres.md) | 0.1% | [Inspect engine](https://history.columnar.tech/connections/2023/compute/postgres.md) |
| [Apache Arrow DataFusion](https://history.columnar.tech/technologies/compute/datafusion.md) | 0.1% | [Inspect engine](https://history.columnar.tech/connections/2023/compute/datafusion.md) |
| [Vertica](https://history.columnar.tech/technologies/compute/vertica.md) | <0.1% | [Inspect engine](https://history.columnar.tech/connections/2023/compute/vertica.md) |
| [ClickHouse](https://history.columnar.tech/technologies/compute/clickhouse.md) | <0.1% | [Inspect engine](https://history.columnar.tech/connections/2023/compute/clickhouse.md) |

[All percentages for 2023](https://history.columnar.tech/years/2023.md)

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[Markdown overview](https://history.columnar.tech/index.md) · [Interactive visualization](https://history.columnar.tech/?2023) · [Methodology](https://history.columnar.tech/methodology.md) · [Terms of use](https://history.columnar.tech/terms.md)

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