# Spark (independent deployments) vendor-specific interface · access · 2012

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.

1.5125% of the full access layer.

[Spark (independent deployments) vendor-specific interface](https://history.columnar.tech/technologies/access/vendor-spark.md): historical names and annual shares.

Connections below describe the whole Spark (independent deployments) engine. Access and storage mixes are estimated separately; they are not a joint interface-to-storage distribution.

## Access use within this engine

| Option | Share of engine activity | Share of full access layer |
| --- | --- | --- |
| [Spark (independent deployments) vendor-specific interface](https://history.columnar.tech/technologies/access/vendor-spark.md) | 75.6% | 1.5% |
| [Other language/portable APIs](https://history.columnar.tech/technologies/access/other-api.md) | 24.4% | 0.5% |

## Storage use within this engine

| Option | Share of engine activity | Share of full storage layer |
| --- | --- | --- |
| [HDFS text/SequenceFile/RCFile/Avro](https://history.columnar.tech/technologies/storage/hdfs-row.md) | 82% | 1.6% |
| [Local/shared row files](https://history.columnar.tech/technologies/storage/legacy-local.md) | 10% | 0.2% |
| [Object-store CSV/text/Avro](https://history.columnar.tech/technologies/storage/object-row.md) | 8% | 0.2% |

[All percentages for 2012](https://history.columnar.tech/years/2012.md)

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[Markdown overview](https://history.columnar.tech/index.md) · [Interactive visualization](https://history.columnar.tech/?2012) · [Methodology](https://history.columnar.tech/methodology.md) · [Terms of use](https://history.columnar.tech/terms.md)

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