News - 6 series#

Release 6.1.5 - 2017-01-23#

This is a bug fix release of 6.1.4. 6.1.4 users should upgrade to 6.1.5.

Improvements#

Supported binary operation against nonexistent reference column value. It’s always false.
[logical_select] Added sort_keys, drilldown_sort_keys and drilldowns[${LABEL}].sort_keys. sortby, drilldown_sortby and drilldowns[${LABEL}].sortby are deprecated.

Fixes#

[select] Fixed a bug that index search may not return matched record.

Release 6.1.4 - 2017-01-18#

This is a bug fix release of 6.1.3. 6.1.3 users should upgrade to 6.1.4.

Improvements#

[Near search operator] Supported customizing the max interval.
[Near search operator] Supported unlimited interval.
Stopped to install groonga-httpd-restart when groonga-httpd isn’t installed. [GitHub#626] [Patch by OBATA Akio]
Improved index update performance against non natural language text data such as multi column index data in Mroonga. [groonga-dev,04219] [Reported by Masanori Miyashita] [GitHub#617]
[logical_select] Supported drilldowns[LABEL] form. drilldown[LABEL] form is deprecated.
Supported using system Onigmo. [GitUub#628] [Patch by OBATA Akio]

Fixes#

[truncate] Fixed a memory leak. It’s caused when the target is TABLE_HASH_KEY or TABLE_PAT_KEY and the target table has many token filters are registered. [GitHub#622] [Patch by Naoya Murakami]
[select] Fixed a bug that old cache is used after column_rename is used.
[select] Fixed a bug that index search may not return matched record. [GitHub#624] [Patch by Naoya Murakami]

Thanks#

Naoya Murakami
OBATA Akio

Release 6.1.3 - 2017-01-06#

Improvements#

[grn_db_recover()][grndb] Reduced memory usage when only 1 thread mode.

Fixes#

Reverted “Improved performance of updating inverted indexes in the worst case”. It had reported error when key has multibyte character. This change was included in 6.1.2.
[TokenRegexp] Fixed a bug that \A${ONE_CHARACTER}\z returns all one character values.

Release 6.1.2 - 2016-12-31#

Improvements#

windows: Supported to bundle groonga-normalizer-mysql.
[Log] Added description about log format with PID case.
[CentOS] Improved installation procedure about recent groonga-release package.
[load] Supported to show {"n_loaded_records": N} in response for command version 3 or later.
[load] Supported --output_ids yes parameter for command version 3 or later. If --output_ids yes is specified, loaded record IDs(loaded_ids) are also returned. ID is 0 for record that is failed to add.
[Others] Added installation instruction about depended packages (Zstandard, LZ4)
Changed to use Onigmo 6.0 as regular expression library.
Marked some features as stable.
- grndb command.
- request_cancel command.
- highlight_html function.
- highlight_full function.
- snippet_html function.
[httpd] Updated bundled nginx to 1.11.8.
Improved to reduce AND search response time. [GitHub#618,#619,#620] [Patch by Naoya Murakami]
Improved performance of updating inverted indexes in the worst case. This fix also reduces memory usage in that process. [groonga-dev,04219] [Reported by Masanori Miyashita]

Fixes#

Added missing NULL check about return value of grn_ctx_at. This fix prevents from unexpected crash bug.

Thanks#

Naoya Murakami
Masanori Miyashita

Release 6.1.1 - 2016-11-29#

Improvements#

[select] Supported the following functions in slices.
[groonga-httpd] Supported PID output to log file. It is useful to distinct multiple worker processes. The messages are logged as TIMESTAMP|MARK|PID: MESSAGE.
[ja] Changed to stop compressing small data. If column data is less than 256 byte, the data aren’t compressed even when COMPRESS_ZLIB or COMPRESS_LZ4 or COMPRESS_ZSTD is specified. By this change, performance and space efficiency will be improved.
[column_create] Supported Zstandard. COMPRESS_ZSTD flag is used to enable this feature.
[rpm][centos] Enabled Zstandard for CentOS 6 or later packages.
[between] Supported between(_key, ...) as target.
[httpd] Updated bundled nginx to 1.11.6.

Fixes#

Fixed a bug that needless index check reports error wrongly when the default column value such as 0 exists in lexicon. It shows error message such as “[ii][delete][one] failed to allocate a segment: …” unexpectedly.
[logical_table_remove] Fixed a bug that it may return error with --dependent yes option. In the previous version, if one or more columns that refer the same table, the error is occurred.
[sort] Fixed a crash bug when one of sort keys is a compressed column and --query and/or --filter are used at the same time.

Release 6.1.0 - 2016-10-29#

Improvements#

[dump] Supported to sort load table names by key instead of ID to make output stable. This is incompatible change but it makes easy to compare result of dump command.
[table_create][column_create] Revised outdated descriptions with execution examples. English documentation is also published and section about small/medium index column is also added.
[experimental][httpd] Supported mruby to customize configuration settings in groonga-httpd.conf.
[windows] Updated bundled Groonga Admin to 0.9.5. It is recommended to upgrade because amount of memory usage is drastically reduced. Note that this version drops Groonga 5.0.8 or earlier support.
Added log token and token ID on error. [Gitter:groonga/ja:58043f77614116a2568d529c] [Suggested by torinky]
[Tables] Updated description about the max record ID.
[mruby] Suppported to convert time of mrb_value to grn_bulk. [GitHub:#607] [Patch by Naoya Murakami]
[ubuntu] Supported Ubuntu 16.10 (Yakkety Yak)
[httpd] Updated bundled nginx to 1.11.5.

Fixes#

Fixed a bug that table of index column was reported in log instead of correct index column.
Fixed a bug that in posting list skip optimization in index search may skip to wrong position. [Gitter:groonga/ja:57f2ff87d45d7f0f525e2216] [Reported by torinky]
Fixed a memory leak on static index construction.
[hash] Fixed a memory leak for many token filters are set case.
[select] Fixed a bug that wrong column name that starts with number in output_columns is not ignored. It caused a syntax error.

Thanks#

torinky
Naoya Murakami

Release 6.0.9 - 2016-09-29#

Improvements#

[logical_table_remove] Supported to remove broken tables and columns. It supports force parameter.
[select] Supported match_columns, query, query_flags and query_expander for slices.
[http][httpd] Supported incomplete POST-ed JSON. Only passed JSON is processed.
[httpd] Changed to stop not to create the default log file when custom file is specified.
Changed to reduce the default lock timeout to 15min from 2.7h.
[groonga-httpd] support “~” modifier in location such as “location ~ /d/…”.
[mruby] Updated to the latest mruby to fix build error with Visutal Studio.
[httpd] Updated bundled nginx to 1.11.4.

Fixes#

Fixed build error on OpenBSD. OpenBSD doesn’t provide TCP_NODELAY. [MariaDB JIRA: fix MDEV-7209][Reported by Brad Smith]
Fixed a missing deleted check for indexes. It causes missing search results even though it should be matched. Groonga 6.0.3 or later version are affected. [groonga-dev, 04107] [Reported by Kazuhiko]
[doc] Fixed a missing entry in Groonga 6.0.2 news that sequential search is also executed as a fallback for geo_in_circle [Reported by Gurunavi, Inc.]
[table_create] Fixed a bug that table_create command accepts no key type for TABLE_PAT_KEY, TABLE_HASH_KEY and TABLE_DAT_KEY tables. It creates a invalid table. [GitHub#599]
[admin] Fixed a bug that it can not create a new record.
Fixed a bug that select command with a wrong filter causes crash. [GitHub#601]

Thanks#

Brad Smith
Kazuhiko
Gurunavi, Inc.

Release 6.0.8 - 2016-08-29#

Improvements#

[object_list] Supported to show more properties such as value_size and n_elements in metadata.
Supported operator per selector. This change enables to choose correct index for selector. It means that between() chooses index for range search, in_values() chooses index for equality comparison. [GitHub#589] [Reported by Naoya Murakami]
[debian] Changed to use nginx log reopen feature instead of Groonga’s [log_reopen] command because log_reopen command works only for one worker. On the contrast, nginx log reopen feature works for multiple workers.
[table_copy] Added table_copy command which copies specified table.
[column_copy] Supported to cast A table record to B table record. It fixes a case that column_copy failure in the previous version. Note that both tables must support key.
[column_copy] Supported reference type vector.
[admin] Supported no response error case. It fixes the problem that “Loading…” message will remain displayed.
[groonga executable file][http] Supported to return 400 Bad Request against not implemented function.
[groonga-httpd] Supported to return body on failure.
[groonga-httpd] Supported to load large data as stream.
Supported sequential search by _key when it is specified as a source of index column.
Supported to report index information on resolving by accessor for data column if log level is equal to info.
Added valid lexicon check on setting index sources. If users create wrong index for sources by [column_create], this check shows details.
[Limitations] Updated description about table limitations.

Fixes#

[column_create] Fixed a bug that buffer overflow occurs on logging.
Fixed to output response even when critical level error.
Fixed to ensure clearing output buffer for each grn_ctx_send. This change solves sometimes response may broken. [GitHub#330]
[fuzzy_search] Fixed a bug that prefix_match_size option returns wrong node. It causes a problem that fuzzy_search returns wrong edit distance. [GitHub#590] [Patch by Naoya Murakami]
[load] Changed to report error when column value set is failed. It enables you to notice mismatch between type of column and actual value.
[groonga-httpd] Fixed a bug that wrong HTTP status is set on success.
[fuzzy_search][in_values] Fixed to resolve record id correctly on sequential search. [GitHub#591,#592,#593] [Patch by Naoya Murakami]

Thanks#

Naoya Murakami

Release 6.0.7 - 2016-07-29#

Improvements#

[string_substring] Added string_substring function to extract a substring from given string. The syntax of string_substring is string_substring(string, from, [length]). [GitHub#564] [Patch by Naoya Murakami]
[experimental] Added GRN_II_MAX_N_SEGMENTS_TINY and GRN_II_MAX_N_CHUNKS_TINY environment variables to customize the value about default max N segments/chunks. This feature is affected to index column for fixed size scalar column. It reduces memory usage but not tested widely yet.
[vector_slice] Added vector_slice function to extract specific elements in vector column. [GitHub#582] [Patch by Naoya Murakami]
Supported index range search for _key of PAT/DAT table. [GitHub#583]
[object_list] Added object_list command for debugging. It is useful to investigate whether database is corrupted or not.
Added a script that checks object_list response.
[mruby] Supported float bulk in expression_rewriter. [GitHub#587] [Patch by Naoya Murakami]
[dump] Changed output order about table by name instead of ID. It breaks dump output compatibility but it can be restored as usual.
[windows] Updated bundled msgpack to 2.0.0.
[windows] Added groonga-suggest-create-dataset.
[httpd] Updated bundled nginx to 1.11.3.
[deb] Dropped support for Ubuntu 15.10 (Wily werewolf).

Fixes#

[examples edict] Fixed to use gzcat instead of zcat if exists. [GitHub#576] [Patch by Yuya TAMANO]
Added missing null-check before dereferencing a pointer. [GitHub#579] [Patch by Sho Minagawa]
Fixed not to perform a sequential search if an index is available. [GitHub#580]
[load] Fixed a bug that Time column can reduce the precision of values. [GitHub#581]
Fixed a bug that object literal expression codes is broken when executing multiple logical operations. [GitHub#584] [Patch by Naoya Murakami]
Fixed a bug that columns of Float, WGS84GeoPoint and TokyoGeoPoint were created with GRN_OBJ_COMPRESS_ZLIB even if the flag was not specified. [GitHub#586] [Reported by Naoya Murakami]

Thanks#

Naoya Murakami
Yuya TAMANO
Sho Minagawa

Release 6.0.5 - 2016-06-29#

Improvements#

[io_flush] Marked as stable command.
[mruby] Supported to optimize prefix search by estimating data size efficiently
[fuzzy_search] Supported max_distance option as 3rd argument to specify it easily. [GitHub#553] [Patch by Naoya Murakami]
[query_expand] Supported command to expand query. It is useful if there are many synonyms.
[select] Supported --drilldown with command_version=3. [groonga-dev,04055] [Reported by Naoya Murakami]
Removed needless code from grn_table_select_sequential(). [GitHub#560] [Reported by Sho Minagawa]
grn_table_setoperation(): Changed to update score instead of overwriting by GRN_OP_ADJUST. This change is introduced to keep consistency with grn_ii_posting_add(). [groonga-dev,04058] [Reported by Naoya Murakami]
[dump] Reduced the max opened table/column files when 1 thread mode.

Fixes#

[CMake][Windows] Fixed to install missing mruby script. [groonga-dev,04040] [Reported by Soichiro Kiyokawa]
[Windows] Changed to bundle msgpack-c.
[Others] Fixed a typo about default database encoding (utf8). [GitHub#549] [Patch by IWAI, Masaharu]
[ユーザーと協力して開発をうまく進めていくための指針] Fixed a typo about product name (Twitter). [GitHub#550] [Patch by IWAI, Masaharu]
Fixed a bug that specific records are not included into search result when multiple index column is created with WITH_SECTION flag. [GitHub#551]
Fixed a crash bug that searching while loading data with GRN_II_CURSOR_SET_MIN_ENABLE=yes. GRN_II_CURSOR_SET_MIN_ENABLE is enabled by default since Groonga 6.0.3.
[Token filters] Fixed thread unsafe implementation.
[doc] Fixed a typo in 6.0.4 release entry. [GitHub#559] [Patch by cafedomancer]

Thanks#

Naoya Murakami
Soichiro Kiyokawa
IWAI, Masaharu
cafedomancer

Release 6.0.4 - 2016-06-06#

It’s a bug fix release of 6.0.3. It’s recommend that Groonga 6.0.3 users upgrade to 6.0.4. This release fixes some search related problems.

Fixes#

[select] Fixed a bug that --drilldown against a temporary column created by --columns refers freed memory.
Fixed a bug that search with large index may refer invalid data. It takes a long time to return search result. [GitHub#548][groonga-dev,04028][Reported by Atsushi Shinoda]

Thanks#

Atsushi Shinoda

Release 6.0.3 - 2016-05-29#

Improvements#

[experimental] Added GRN_II_OVERLAP_TOKEN_SKIP_ENABLE and GRN_NGRAM_TOKENIZER_REMOVE_BLANK_DISABLE environment variables to improve performance of N-gram tokenizer. [GitHub#533][Patch by Naoya Murakami]
[table_create] Stopped to ignore nonexistent default tokenizer, normalizer or token filters. In the previous versions, Groonga ignored a typo in --default_tokenizer, --normalizer or --token_filters parameter silently. It caused a delay in finding problems.
[select] output_columns v1: Supported expression such as snippet_html(...) in output_columns.
[select] Removed a limitation about the number of labeled drilldowns. In the previous versions, the number of max labeled drilldowns is limited to 10.
[number_classify] Added a number plugin. Use number_classify function to classify by value.
Added a time plugin. Use time_classify_second, time_classify_minute, time_classify_hour, time_classify_day, time_classify_week, time_classify_month, time_classify_year function to classify by value.

[select] Supported dynamic column. Dynamic columns can be used in output_columns, drilldown and sortby [GitHub#539,#541,#542,#544,#545][Patch by Naoya Murakami]:

select \
  --columns[LABEL].stage filtered \
  --columns[LABEL].type ShortText \
  --columns[LABEL].flags COLUMN_SCALAR \
  --columns[LABEL].value 'script syntax expression' \
  ...

[experimental][select] Improved performance for range/equal search and enough filtered case. Set GRN_TABLE_SELECT_ENOUGH_FILTERED_RATIO environment variable to enable this feature.
[select] Supported index used search for filtered tables.
Supported to detect changed database isn’t closed. This feature is useful to check database corruption when Groonga is crashed unexpectedly.
[grndb] Supported detecting database wasn’t closed successfully case.
Added --drilldown_filter.
Supported filter in labeled drilldown.
Improved performance for using [between] without index. By between() optimization, there is a case that range search is 100x faster than the previous version of between().
[record_number] Supported window function.
[experimental][select] Supported --slices.
[select] Deprecated --sortby and --drilldown_sortby. Use --sort_keys and -drilldown_sort_keys instead.
[select] Deprecated --drilldown[...]. Use --drilldowns[...] instead.
Added [Command version] 3. It uses object literal based envelope.
[groonga-httpd] Updated bundled nginx version to 1.11.0.

Fixes#

[select] output_columns v2: Fixed a bug that * isn’t expand to columns correctly.
Fixed a bug that 1usec information is lost for time value.
Fixed a crash bug when a mruby plugin is initialized with multiple threads.
Fixed a bug that static indexing crashes if a posting list is very long. This bug may occur against enormous size of database. [GitHub#546]

Thanks#

Naoya Murakami

Release 6.0.2 - 2016-04-29#

Improvements#

Supported bool in comparison operators (>, >=, <, <=). TRUE is casted to 1. FALSE is casted to 0. Thus you specify function which returns boolean value in comparison.
[groonga-http][Request timeout] Supported request_timeout parameter. Canceled request returns HTTP/1.1 408 Request Timeout status code.
[table_tokenize] Added index_column option. [GitHub#534] [Patch by Naoya Murakami]
[table_tokenize] Supported to output estimated_size. [GitHub#518] [Patch by Naoya Murakami]
[geo_in_rectangle][geo_in_circle] Supported to work without index. In this case, sequential search is executed as a fallback.
Reduced needless internal loops. It improves phrase search performance. [GitHub#519] [Patch by Naoya Murakami]
[How to contribute to groonga] Updated documentation about contribution. [GitHub#522] [Patch by Hiroshi Ohkubo]
[Return code] Updated documentation about return code list.
[groonga executable file] Added --default-request-timeout option.
[windows] Supported DLL version.
Supported index used search even if value only term exists. For example, true || column > 0 doesn’t use index even if column has index. In this release, above issue is resolved.
[select] Supported specifying grouped table [GitHub#524,#526,#527,#528,#529] [Patch by Naoya Murakami]
Supported grouping by Int{8,16,64}/UInt{8,16,64} value. In the previous versions, only 32bit fixed size value was supported.
Added table name to error message for invalid sort key.
[groonga-suggest-httpd] Updated documentation.
[Completion] Fixed a typo about example. [groonga-dev,04008] [Reported by Tachikawa Hiroaki]
[grndb] Added a workaround to keep backward compatibility. use object_inspect instead of inspect.
[groonga-httpd] Updated bundled nginx version to 1.9.15.
[centos] Supported systemd.
[doc] Supported only HTML output. [GitHub#532] [Patch by Hiroshi Ohkubo]
[groonga-httpd][centos] Supported to customize environment variables.
[Others] Updated documentation about --with-package-platorm option.
[ubuntu] Supported Ubuntu 16.04 (Xenial Xerus)

Fixes#

Fixed a bug that tokenization of zero-length values are failed. For example, if description column is indexed column, tokenizer reports an error. [GitHub#508] [Reported by Naoya Murakami]:
```
load --table docs
[
["_key","description"],
[2,""]
]
```
Fixed a crash bug because of invalid critical section handling. [GitHub#507]
[リリース手順] Fixed a typo about grntest howto. [GitHub#511] [Patch by Hiroshi Ohkubo]
[doc] Removed man support.
Removed invalid debug log messages which make user confused.
Fixed a bug that data is not correctly flushed because internal counter is wrongly cleared. In the previous version, when size of data exceeds specific one, it was failed to create indexes. [GitHub#517] [Reported by Naoya Murakami]
Fixed a bug that a process can’t use more than one caches in parallel. [GitHub#515]
Fixed a bug that internally used alloc_info structure which is used to find memory leaks is not exclusively accessed. Without this fix, it may causes a crash. [GitHub#523]
[tokenizer mecab] Fixed a memory leak on dictionary encoding mismatch error. [groonga-dev,04012] [Reported by Naoya Murakami]
Fixed a bug that combination of [groonga-suggest-httpd] and [groonga-suggest-learner] didn’t work.
[doc] Removed needless uuid from *.po [GitHub#531] [Patch by Hiroshi Ohkubo]
[highlight_html] Fixed a bug that duplicated text is returned. This bug occurs when highlighted keyword occurred 1024 or more times.
Fixed a bug that KEY_LARGE conflicts with existing flag. If you use TABLE_HASH_KEY|KEY_LARGE in the previous version, there is a possibility to break database. Please recreate the table.

Thanks#

Naoya Murakami
Hiroshi Ohkubo
Tachikawa Hiroaki

Release 6.0.1 - 2016-03-29#

Improvements#

[mruby] Updated bundled mruby to fix a crash bug related to GC and backtrace.
Exported the following API
- grn_expr_take_obj()
- grn_request_canceler_cancel_all()
- grn_obj_remove_dependent()
- grn_obj_is_text_family_type()
[hash] Supported 4GiB over total key size when KEY_LARGE flag is set to a table:
```
table_create Users TABLE_HASH_KEY|KEY_LARGE ShortText
```
[load] Supported Request ID when you specify input data as raw JSON instead of parameter value:
```
POST /d/load?table=XXX&request_id=x

load --table XXX --request_id x
[
  ...
]
```
[shutdown] Added mode argument to shutdown immediately. Use shutdown --mode immediate in such a purpose.
[macOS] Added a instruction to setup MeCab dictionary for Homebrew.
[load] Supported to stop load when cancel is requested.
[table_remove] Supported to remove dependent tables. Use --dependent yes for it.
[logical_table_remove] Supported to remove dependent tables.
[Windows] Supported memory debug mode on Windows.
Supported to dump allocation information by status on memory debug mode
[I18N] Added installation step for Sphinx.
[experimental] Supported to split chunks in static indexing. Use GRN_INDEX_CHUNK_SPLIT_ENABLE=yes to enable it. [GitHub#479]

Fixes#

[load] Fixed a crash bug when nonexistent column is specified. [GitHub#493]
[load] Fixed a bug that load command does not return error code correctly. [GitHub#495]
[load] Fixed a memory leak when parsing columns parameter in load command.
[load] Fixed a bug that only the first array in --values is handled as a list of column names if --columns is not specified. [GitHub#497]
[load] Fixed to check --columns more precisely [GitHub#496]
Fixed a insufficient critical section handling for thread-safety.
[column_create] Fixed a crash bug when failed to create a column.
[table_remove] Fixed a crash bug to remove nonexistent table. [GitHub#504]
Fixed a bug that offline index construction against WITH_POSITION + non-text VECTOR column ignores position.
[grndb] Fixed a bug that cycle reference causes stack over flow.
[deb] Dropped support for Ubuntu 15.04 (Vivid Vervet)

Thanks#

YUKI Hiroshi

Release 6.0.0 - 2016-02-29#

Improvements#

[grndb] Supported check against table specified as table domain in --target mode.
[grn_pat_fuzzy_search()] Added a new API that provides fuzzy search feature by patricia trie. [GitHub#460][Patch by Naoya Murakami]
[functions/string] Added a new plugin that provides string related functions. [GitHub#459][Patch by Naoya Murakami]
[string_length()] Added a new function that returns the number of characters in the specified string. It’s contained in functions/string plugin. [GitHub#459][Patch by Naoya Murakami]
[grn_table_fuzzy_search()] Added a new DB API that provides fuzzy search feature. [GitHub#463][Patch by Naoya Murakami]
[GRN_OP_FUZZY] Added a new operator. [GitHub#463][Patch by Naoya Murakami]
[grn_obj_search()] Supported GRN_OP_FUZZY operator. [GitHub#463][Patch by Naoya Murakami]
[GRN_TABLE_FUZZY_SEARCH_WITH_TRANSPOSITION] Added a flag for grn_table_fuzzy_search(). [GitHub#463][Patch by Naoya Murakami]
[GRN_TOKENIZE_ONLY] Added a new tokenization mode that returns all tokens even if the token doesn’t exist in lexicon. [GitHub#463][Patch by Naoya Murakami]
[grn_obj_type_to_string()] Add a new function that stringify type ID such as GRN_VOID and GRN_BULK.
[object_inspect] Added a new command that returns information of the target object.
Supported compare operations against vector. If left hand side vector includes any element that satisfies left_hand_side_element OP right_hand_side, it returns true.

Example:
```
[1, 2, 3] < 2 # -> true because 1 is less than 2
[1, 2, 3] > 4 # -> false because all elements are less than 4
```
[fuzzy_search()] Added a new function that provides fuzzy search feature. [GitHub#464][Patch by Naoya Murakami]
[edit_distance] Supported transposition flag. [GitHub#464][Patch by Naoya Murakami]
Supported index search for vector_column[2] == 29.
[GRN_PLUGIN_CALLOC()] Added a new API for plugin that provides calloc() feature. [GitHub#472][Patch by Naoya Murakami]
Supported index search for compare operations against vector element such as vector_column[2] < 29.
[grn_plugin_proc_get_var_bool()] Add a new API for plugin that provides getting boolean argument value feature.
[grn_plugin_proc_get_var_int32()] Add a new API for plugin that provides getting 32bit integer argument value feature.
[grn_plugin_proc_get_var_string()] Add a new API for plugin that provides getting string argument value feature.
[object_remove] Added a new command that removes an object. object_remove can also remove a broken object.
Supported mips/mipsel. [debian-bugs:770243][Reported by Nobuhiro Iwamatsu][Reported by Thorsten Glaser][Reported by YunQiang Su][Reported by Dejan Latinovic][Reported by Steve Langasek]
[grndb][CMake] Supported.
[grn_expr_syntax_expand_query()] Added a new API that provides query expansion feature.
[snippet()] Add a new function that provides snippet feature. [GitHub#481][Patch by Naoya Murakami]
[highlight()] Add a new function that provides highlight feature. [GitHub#487][Patch by Naoya Murakami]
Added XXX && column != xxx optimization. It’s converted to XXX &! column == xxx internally.
[Memcached binary protocol] Added --memcached-column. You can access existing column by memcached protocol.
[groonga-httpd] Supported TLS. [groonga-dev,03948][Reported by KITAITI Makoto]
[groonga-httpd] Updated bundled nginx version to 1.9.11 from 1.9.10.
[Windows][CMake] Supported LZ4. LZ4 is bundled.

Fixes#

[select] Added a missing error check for outputting column. [GitHub#332][Reported by Masafumi Yokoyama]
Fixed a bug that function(column_with_index) == 29 ignores function(). [groonga-dev,03884][Reported by Naoya Murakami]
[reindex] Fixed a bug that reindex doesn’t clear query cache.
[patricia trie] Fixed a bug that sorting by integer patricia trie key returns unsorted result. [GitHub#476][Reported by Ryunosuke SATO]
[select] Fixed a crash bug that is occurred when too many keywords is specified into --query. [GitHub#484][Reported by Hiroyuki Sato]
[select] Fixed a bug that wrong cache is used when Command version or Pretty print is used. [GitHub#490][Reported by KITAITI Makoto]

Thanks#

Masafumi Yokoyama
Naoya Murakami
Nobuhiro Iwamatsu
Thorsten Glaser
YunQiang Su
Dejan Latinovic
Steve Langasek
Ryunosuke SATO
Hiroyuki Sato
KITAITI Makoto