## What does Atlan crawl from Cloudera Impala?

URL: https://docs.atlan.com/apps/connectors/database/cloudera-impala/references/what-does-atlan-crawl-from-cloudera-impala

> Learn about what does atlan crawl from cloudera impala?.

Atlan crawls and maps the following assets and properties from Cloudera Impala. This integration helps you understand and govern data stored in Impala by organizing metadata into Atlan asset types and enabling downstream visibility, including lineage.

## Lineage

Atlan supports the following lineage in Cloudera Impala.

- Asset-level and field-level lineage for `Tables → Views`
- Asset-level and field-level lineage for `Views → Views`

## Schema

Atlan maps databases from Cloudera Impala schema to its `Schema` asset type.

| Source property | Atlan property |
| --- | --- |
| `owner` | `sourceOwners` |
| `comment` | `description` |
| `external_location` | `schemaExternalLocation` |

## Tables

Atlan maps Cloudera Impala tables to its `Tables` asset type.

| Source property | Atlan property |
| --- | --- |
| `rows` | `rowCount` |
| `sizeBytes` | `sizeBytes` |
| `owner` | `sourceOwners` |
| `stats.partitionCount` (Only applicable for Kudu tables) | `partitionCount` |
| `OutputFormat` (Not available for Impala-managed Kudu tables for Impala 3.3+) | `externalLocationFormat` |
| `Location` | `externalLocation` |
| `Table Type` | `subType` |
| `comment` | `description` |
| `table_query` | `tableDefinition` |

## Views

Atlan maps tables from Cloudera Impala views to its `Views` asset type.

| Source property | Atlan property |
| --- | --- |
| `rows` | `rowCount` |
| `sizeBytes` | `sizeBytes` |
| `owner` | `sourceOwners` |
| `Table Type` | `subType` |
| `KUDU` (only set for Kudu tables) | `tableType` |
| `comment` | `description` |
| `VIEW_DEFINITION` | `definition` |

## Columns

Atlan maps columns from Cloudera Impala to its `Column` asset type.

| Source property | Atlan property |
| --- | --- |
| `column_name` | `name` |
| `ENCODING` (only applicable for Kudu table types) | `columnEncoding` |
| `COMPRESSION` (only applicable for Kudu table types) | `columnCompression` |
| `PRIMARY_KEY` (only applicable for Kudu tables) | `isPrimary` |
| `ISNULLABLE` | `isNullable` |
| `TYPE` | `dataType` |
| `COMMENT` | `description` |

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