Overview
The Elasticsearch compatibility layer in GreptimeDB is designed to provide a certain degree of compatibility with Elasticsearch, allowing users to migrate existing Elasticsearch applications to GreptimeDB with relative ease.
However, GreptimeDB does not fully support all features and functionalities of Elasticsearch. In some cases, users may need to adjust or modify their applications to achieve the same functionality in GreptimeDB.
Principle
Essentially, GreptimeDB receives Elasticsearch QueryDSL syntax, converts it to GreptimeDB's query syntax, and returns data in the Elasticsearch API format to achieve compatibility.
Supported API List
| API | Method | Description |
|---|---|---|
| /{table_name}/_search | POST | Execute search query |
| /{table_name}/_async_search | POST | Execute search query |
| /_resolve/index/{schema_name} | POST | Index document |
| /{table_name}/_field_caps | GET | Get field info |
Supported Query List
| Query | Description |
|---|---|
| match | Match query |
| match_phrase | Phrase match |
| match_all | Match all |
| term | Exact match |
| prefix | Prefix match |
| range | Range query |
| exists | Field existence |
| bool | Compound query |
| aggregation | Aggregation query |
Supported Aggregation List
| Aggregation | Status | Description |
|---|---|---|
| avg | Average value | |
| sum | Sum | |
| min | Minimum value | |
| max | Maximum value | |
| count | ✅ | Count |
| date_histogram | ✅ | Date histogram |
| histogram | Histogram | |
| terms | Terms |
Querying GreptimeDB with Kibana
For more information, please contact us.