[groonga-talk:328] [ANN] Groonga 6.0.7

[Kentaro H. <ha...@cl...>]

Groonga 6.0.7 has been released!
  http://groonga.org/docs/news.html#release-6-0-7

Install: http://groonga.org/docs/install.html
Charcteristics:  http://groonga.org/docs/characteristic.html

The topics in this release:

  * Changed output dump order about table by name instead of ID
  * Added object_list command for debugging
  * Dropped support for Ubuntu 15.10 (Wily Werewolf)

In this release, it breaks dump output compatibility but it can be restored as usual.


## Changed output dump order about table by name instead of ID

In this release, incompatible change is introduced to dump command.

In the previous versions, dump command depends output order by id. But
if you changed database schema frequently, it affects to ID of
object. There is a case that output content which is generated by dump
command is different from another database even though database schema
and data are actually same.

It is inconvenient when checking difference of dump data, so this
behavior is changed to output by name instead of ID.

## Added object_list command for debugging

In this release, object_list command is supported.

object_list command outputs object information in a database. "object"
means that meta information in database. There is a similar command -
schema, but schema command is different from object_list in some
points.

object_list command doesn't open object actually, so it is a
lightweight command because it doesn't consume a lot of resources.

As scheme command is good enough for usual case, use object_list for
trouble-shooting.

## Dropped support for Ubuntu 15.10 (Wily Werewolf)

In this release, Ubuntu 15.10 support is dropped. It reached EOL on
July 28, 2016.

  * Ubuntu 15.10 (Wily Werewolf) reaches End of Life on July 28 2016
  http://fridge.ubuntu.com/2016/07/07/ubuntu-15-10-wily-werewolf-reaches-end-of-life-on-july-28-2016/


We recommends to migrate to Ubuntu 16.04 because Groonga 6.0.7 package
for 16.04 is provided as PPA.

## 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.

  * [News - 5.x] Extracted Groonga 5.x news entries from News.

  * [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



-- 
Kentaro Hayashi <ha...@cl...>