BloGroonga

2019-07-30

Groonga 9.0.5 has been released

Groonga 9.0.5 has been released!

How to install: Install

IMPORTANT NOTICE

After Groonga 9.0.5 has been released, some critical bugs are found which affects search results. We will release the new version which fixes the following bugs. Please do not use Groonga 9.0.5, and recommends to upgrade to fixed version in the future.

Here are the found bugs:

  • The search query causes error and it doesn't return matched records. This bug is caused when the following conditions are met.

    • The lexcon table is TABLE_HASH_KEY
    • Use @ operator
    • Search escalation is occurred

  • slices returns the records which should not be matched.

    • Use select command with slices parameter.

Changes

Here are important changes in this release:

  • logical_range_filter Improved that only apply an optimization when the search target shard is large enough.

  • normalizers Added new option unify_to_katakana for NormalizerNFKC100.

  • select Added drilldowns support as a slices parameter.

  • select Added columns support as a slices parameter.

  • select Improved that we can reference _score in the initial stage for slices parameter.

  • highlight_html, snippet_html Improved that extract a keyword also from an expression of before executing a slices when we specify the slices parameter.

  • Improved that collect scores also from an expression of before executing a slices when we specify the slices parameter.

  • Stopped add 1 in score automatically when add posting to posting list.

  • Added support for index search for nested equal like XXX.YYY.ZZZ == AAA.

  • Reduce rehash interval when we use hash table.

  • Improved to we can add tag prefix in the query log.

  • Added support for Apache Arrow 1.0.0.

  • Added support for Amazon Linux 2.

  • Fixed a bug that vector values of JSON like "[1, 2, 3]" are not indexed.

  • Fixed wrong parameter name in table_create tests.

  • Fixed a bug that drilldown label is empty when a drilldown command is executed by command_version=3.

  • Fixed build error for Windows package on MinGW.

  • Fixed install missing COPYING for Windows package on MinGW.

  • Fixed a bug that don't highlight when specifing non-test query as highlight target keyword.

  • Fixed a bug that broken output of MessagePack format of object_inspect.

  • Fixed a bug that broken output of MessagePack format of index_column_diff.

  • Fixed a bug that broken output of MessagePack format of suggest.

  • Fixed a bug that allocate size by realloc isn't enough when a search for a table of patricia trie and so on.

  • Fix a bug that groonga.repo is removed when updating 1.5.0 from groonga-release version before 1.5.0-1.

logical_range_filter Improved that only apply an optimization when the search target shard is large enough.

This feature reduces that duplicate search result between offset when we use same sort key. Large enough threshold is 10000 records by default.

normalizers Added new option unify_to_katakana for NormalizerNFKC100

This option normalize hiragana to katakana. For example, ぁ ぃ ぇ ぉ` is normalized toヴァヴィヴヴェヴォ``.

We can identify below terms by unify_to_katakana and unify_katakana_v_sounds.

  • ゔぁゔぃゔゔぇゔぉ
  • ばびぶべぼ
  • ヴァヴィヴヴェヴォ

  • バビブベボ

  • First, we apply unify_to_katakana.

    • ゔぁゔぃゔゔぇゔぉ -> ヴァヴィヴヴェヴォ
    • ばびぶべぼ -> バビブベボ
    • ヴァヴィヴヴェヴォ -> ヴァヴィヴヴェヴォ
    • バビブベボ -> バビブベボ

  • Second, we apply unify_katakana_v_sounds.

    • ヴァヴィヴヴェヴォ -> バビブベボ
    • バビブベボ -> バビブベボ

Conclusion

See Release 9.0.5 2019-07-30 about detailed changes since 9.0.4

Let's search by Groonga!