YUKI Hiroshi
null+****@clear*****
Thu Apr 30 00:10:05 JST 2015
YUKI Hiroshi 2015-04-30 00:10:05 +0900 (Thu, 30 Apr 2015) New Revision: 68c184d3f5e65096eccee2c83ad3e7bf1050c164 https://github.com/droonga/droonga.org/commit/68c184d3f5e65096eccee2c83ad3e7bf1050c164 Message: Complete release entry for 1.1.0 Modified files: news/_posts/2015-04-29-release.md Modified: news/_posts/2015-04-29-release.md (+17 -8) =================================================================== --- news/_posts/2015-04-29-release.md 2015-04-29 23:08:34 +0900 (46d914c) +++ news/_posts/2015-04-29-release.md 2015-04-30 00:10:05 +0900 (ff20ca8) @@ -4,6 +4,8 @@ layout: news-item published: false --- +Very sorry for this delay, now we've released Droonga 1.1.0 with a long-cherished feature! + ## What's Droonga? Droonga is a distributed full text search engine, compatible to [Groonga][groonga]. @@ -12,20 +14,26 @@ A Droonga cluster works like an HTTP server compatible to [Groonga][groonga] wit Are you interested in Droonga: how it works and how useful? Let's try the [tutorial][] for an introduction, and see the [overview][] to understand Droonga's design strategy more and more. -## (summary of this release) +## True hot-add of replica nodes is now available! -The most important topic on this release Droonga 1.1.0 is the *(something)*. +The most important topic on this release Droonga 1.1.0 is *true hot-add of replica nodes*. +It was one of long-planned features of Droonga, but we've got it. +Now you can add new replica nodes to your Droonga cluster without any downtime, even if you don't stop crawling/adding new data! -(TBD) +To do it, you have to have two or more replicas in the cluster, except the new adding replica node. +For more information, see [tutorial for adding replica nodes](/tutorial/add-replica/). ## Detailed list of improvements * [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. + * A new parameter `single_operation` 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`. + * A new parameter `use_all_replicas` is introduced to single step definitions. + If you set it to `true`, messages for the handler will be delivered to all replica volumes always. + It is useful for commands which has to be executed all replicas, like `system.statistics.object.count.per-volume`. * `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). @@ -35,6 +43,7 @@ The most important topic on this release Droonga 1.1.0 is the *(something)*. * `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.statistics.object.count.per-volume` command is now available. It is useful to confirm equivalence of replicas. * `system.absorb-data` command is now available. It is used by command line utilities internally. * Message format: * `targetRole` field is introduced to the envelope. @@ -64,9 +73,6 @@ The most important topic on this release Droonga 1.1.0 is the *(something)*. * Query parameters for `/droonga/*` endpoints are used as the message body. * [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. @@ -74,6 +80,9 @@ The most important topic on this release Droonga 1.1.0 is the *(something)*. 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. + * `#@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` * 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] @@ -101,7 +110,7 @@ The most important topic on this release Droonga 1.1.0 is the *(something)*. ## Conclusion * Droonga 1.1.0 has been released! - * (TBD: TODO summarize this release) + * Now you can add new replica to the cluster without any downtime. * Droonga project will release a new version every month! Droonga project welcomes you to join us as a user and/or a developer! See [community][] to contact us! -------------- next part -------------- HTML����������������������������...Download
