Mroonga blog

2016-08-29

Mroonga 6.08 has been released!

Mroonga is a MySQL storage engine that supports fast fulltext search and geolocation search. It is CJK ready. It uses Groonga as a storage and fulltext search engine.

Mroonga 6.08 has been released!

Changes

There are two topics in this release.

  • Limitation about the maximum number record is relaxed
  • Fixed compile error with GCC 6

Limitation about the maximum number record is relaxed

A table had the following limitations. This limitation is derived from Groonga.

  • The maximum one key size: 4KiB
  • The maximum total size of keys: 4GiB
  • The maximum number of records: 268,435,455 (more than 268 million)

In the past, the maximum number of records is announced as 268 million.

With recent research, it turns out that there is a capability to store more records than ever.

Here is the updated limitation about the maximum number of records:

  • No primary key table: 1,073,741,815 (2^30 - 9)
  • PRIMARY KEY or PRIMARY KEY USING BTREE table: 1,073,741,823 (2^30 - 1)
  • PRIMARY KEY USING HASH table: 536,870,912 (2^29)

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

Fixed compile error with GCC 6

In this release, compile error with GCC 6.1.1 was fixed.

If you failed to compile Mroonga from source archive, please confirm whether the version of GCC is matched to GCC 6.1.1.

Conclusion

Please refer to Release 6.08 - 2016-08-29 about detailed changes since 6.07.

Let's go all out to search by Mroonga!