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Add news topics for the next release
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piroor committed Apr 28, 2015
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Expand Up @@ -20,12 +20,73 @@ The most important topic on this release Droonga 1.1.0 is the *(something)*.

## Detailed list of improvements

* [Droonga-engine ][droonga-engine]
* [Droonga-http-server ][droonga-http-server]
* [Express-droonga ][express-droonga]
* [Drnbench ][drnbench]
* [Drntest ][drntest]
* [Grn2drn ][grn2drn]
* [Droonga-engine 1.1.0][droonga-engine]
* General:
* Graceful stopping/restarting works correctly with continual inpouring messages.
* A new parameter `random` is introduced to single step definitions.
If you set it to `true`, messages for the handler will be delivered to just single volume (one of replicas and slices).
It is useful for commands which has to be executed only once in a cluster, like `system.status`.
* `add` command now accepts requests with automatically-convertible mismatched type keys.
For example, a string key `"1"` is available for a table with the key type `UInt32`.
* `dump` command: the value of a column referring any record of another table are correctly exported as its key string, instead of object value (it's invalid value for a message of the `add` command).
As the result, now tables with reference columns are correctly copied between multiple clusters.
* `dump` command: records in a table which has only one column `_key` are exported correctly.
* `dump` command: forwarded messages are now have their own `date` field.
* `Collectors::RecursiveSum` is introduced.
* `system.status` command: now the reporter node and its internal name is reported as a part of response body.
* `system.statistics.object.count` command is now available. It is used by command line utilities internally.
* `system.absorb-data` command is now available. It is used by command line utilities internally.
* Command line utilities:
* `droonga-engine-join` and `droonga-engine-absorb-data` commands work more surely.
* A new option `--verbose` is introduced to monitor internal Serf operations, for `droonga-engine-join` and `droonga-engine-absorb-data`.
* A new command line utility `droonga-engine-set-role` is available (mainly for debugging).
* Compatibility with Groonga:
* Better compatibility to Groonga's `delete` command:
* Works correctly for tables with integer key types.
[The report by funa1g](http://sourceforge.jp/projects/groonga/lists/archive/dev/2014-December/002995.html) inspired this improvement. Thanks!
* Accepts requests with automatically-convertible mismatched type keys.
For example, a numeric key `1` is available for a table with the key type `ShortText`.
* [Droonga-http-server 1.1.2][droonga-http-server]
* Bump required version of `express-droonga`.
* [Express-droonga 1.0.9][express-droonga]
* Updated for the latest Droonga Engine 1.1.0.
* Supports uber-cache 2.0.0.
* New endpoints are introduced to inspect connections to Droonga Engine nodes.
- `/engines` returns the list of currently conencted Droonga Engine nodes.
- `/connections` returns detailed status of internal connections to Droonga Engine nodes.
* Always reconnects to Droonga Engine nodes when there is any change around the Droonga cluster.
* [Drndump 1.0.1][drndump]
* Becomes modulable. You can use internal libraries for other products.
* Supports new `@subscribe-until` directive, for subscription type commands like `dump`.
You can unsubscribe the next request following to the directive automatically with given timeout, like:
`#@subscribe-until 10s`
* [Drntest 1.2.0][drntest]
* Improvements
* Supported new directives to activate/diactivate completion and validation of messages.
* `#@enable_completion` and `#@disable_completion` controls completion of request messages.
Required fields of request messages are automatically completed by default.
* `#@enable_validation` and `#@disable_validation` controls validation of request messages.
Messages are validated by default.
* A `NO RESPONSE` result is now returned immediately, for a stalled engine process.
* Invalid format responses for Groonga commands are now ignored.
* [Droonga-client-ruby 0.2.1][droonga-client-ruby]
* Required fields of input messages are automatically completed by default.
* Input messages are automatically validated by default.
* Timeout option for subscription is available.
You can unsubscribe subscription automatically with specified timeout, like:
`client.subscribe(request, :subscription_timeout => 10)`
* New utility commands are available as shorthand.
* `droonga-system-status`: sends `system.status` request to the cluster.
* `droonga-groonga`: works like the `groonga` command.
* droonga-send, droonga-request:
* A new option `--[no-]completion` is introduced.
You should specify `--no-completion` to send incomplete messages intentionally.
* A new option `--[no-]validation` is introduced.
You should specify `--no-validation` to send invalid messages intentionally.
* A new option `--default-dataset` is introduced.
It is used for sending messages if they have no `dataset` field.
* The "date" field is filled with the format same to droonga-engine's internal one
like "2015-04-08T06:16:20.571303Z".

## Conclusion

Expand All @@ -42,6 +103,6 @@ Droonga project welcomes you to join us as a user and/or a developer! See [commu
[droonga-engine]: https://github.com/droonga/droonga-engine
[droonga-http-server]: https://github.com/droonga/droonga-http-server
[express-droonga]: https://github.com/droonga/express-droonga
[drnbench]: https://github.com/droonga/drnbench
[drndump]: https://github.com/droonga/drndump
[drntest]: https://github.com/droonga/drntest
[grn2drn]: https://github.com/droonga/grn2drn

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