# groonga - An open-source fulltext search engine and column store.

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# 9. Limitations

Groonga has some limitations.

## 9.1. Limitations of table

A table has the following limitations.

- The maximum one key size: 4096Bytes
- The maximum total size of keys: 4GBytes
- The maximum number of records: 268,435,455 (more than 268 million)

Keep in mind that these limitations may vary depending on conditions.

## 9.2. Limitations of indexing

A full-text index has the following limitations.

- The maximum number of distinct terms: 268,435,455 (more than 268 million)
- The maximum index size: 256GBytes

Keep in mind that these limitations may vary depending on conditions.

## 9.3. Limitations of column

A column has the following limitation.

- The maximum stored data size of a column: 256GiB

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