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| <h1> |
| <a href="/avatica/"> |
| <span class="sr-only">Apache Calcite Avatica</span> |
| <img src="/avatica/img/logo.png" width="226" height="140" alt="Calcite Logo"> |
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| <select onchange="if (this.value) window.location.href=this.value"> |
| <option value="">Navigate the blog…</option> |
| <option value="/avatica/news/">Home</option> |
| <optgroup label="v1.x"> |
| |
| <option value="/news/2019/05/16/release-avatica-go-4.0.0/">Release Avatica Go 4.0.0</option> |
| |
| <option value="/news/2019/05/13/release-1.15.0/">Release 1.15.0</option> |
| |
| <option value="/news/2019/04/29/release-1.14.0/">Release 1.14.0</option> |
| |
| <option value="/news/2018/12/04/release-1.13.0/">Release 1.13.0</option> |
| |
| <option value="/news/2018/09/18/release-avatica-go-3.2.0/">Release Avatica Go 3.2.0</option> |
| |
| <option value="/news/2018/09/10/release-avatica-go-3.1.0/">Release Avatica Go 3.1.0</option> |
| |
| <option value="/news/2018/06/24/release-1.12.0/">Release 1.12.0</option> |
| |
| <option value="/news/2018/04/27/release-avatica-go-3.0.0/">Release Avatica Go 3.0.0</option> |
| |
| <option value="/news/2018/03/09/release-1.11.0/">Release 1.11.0</option> |
| |
| <option value="/news/2017/05/30/release-1.10.0/">Release 1.10.0</option> |
| |
| <option value="/news/2017/03/31/new-avatica-repository/">New Avatica Repository</option> |
| |
| <option value="/news/2016/11/01/release-1.9.0/">Release 1.9.0</option> |
| |
| <option value="/news/2016/06/04/release-1.8.0/">Release 1.8.0</option> |
| |
| <option value="/news/2016/03/18/release-1.7.1/">Release 1.7.1</option> |
| |
| <option value="/news/2016/03/03/separate-project/">Splitting Avatica from Calcite</option> |
| |
| </optgroup> |
| </select> |
| </div> |
| |
| |
| <div class="unit four-fifths"> |
| <!-- |
| |
| --> |
| |
| |
| |
| <article> |
| <h2> |
| <a href="/avatica/news/2019/05/16/release-avatica-go-4.0.0/"> |
| Release Avatica Go 4.0.0 |
| </a> |
| </h2> |
| <span class="post-category"> |
| <span class="label"> |
| release |
| </span> |
| </span> |
| <div class="post-meta"> |
| <span class="post-date"> |
| 16 May 2019 |
| </span> |
| |
| |
| |
| <a href="http://github.com/F21" class="post-author"> |
| <img src="http://github.com/F21.png" |
| class="avatar" alt="francischuang avatar" |
| width="24" height="24"> |
| francischuang |
| </a> |
| </div> |
| <div class="post-content"> |
| <!-- |
| |
| --> |
| |
| <p>Apache Calcite Avatica Go 4.0.0 is a major release with numerous improvements and a breaking change for Apache Phoenix. |
| As this a a new major version, users of this package will need to upgrade their import paths to |
| <code class="highlighter-rouge">"github.com/apache/calcite-avatica-go/v4"</code>.</p> |
| |
| <p><strong>Breaking change for Apache Phoenix (<a href="https://issues.apache.org/jira/browse/CALCITE-2724">CALCITE-2763</a>):</strong> |
| In Apache Phoenix, null and empty strings are equivalent. For some background on why this is the case, see |
| <a href="https://issues.apache.org/jira/browse/PHOENIX-947">PHOENIX-947</a>. In version 3 of Avatica-Go and below, null and empty |
| strings are returned as an empty string <code class="highlighter-rouge">""</code> to the client. This prevented database/sql’s built in NullString type from |
| working correctly. From 4.0.0 onwards, null and empty strings will be returned as a <code class="highlighter-rouge">nil</code>. This allows the usage of the |
| <code class="highlighter-rouge">sql.NullString</code> type.</p> |
| |
| <p>For this release, both <a href="https://github.com/golang/dep">dep</a> and Go modules are supported for package management. As |
| Go modules will be turned on by default in Go 1.13.0 (estimated to be released in September/October 2019), it is highly |
| recommended that users of this package start migrating to using Go modules to ease the transition.</p> |
| |
| <p>The Calcite team recommends users of this package to upgrade to this version, where practical, as the dependencies being |
| used by this package have also been upgraded.</p> |
| |
| |
| |
| <p>See the <a href="/avatica/docs/go_history.html#v4-0-0">release notes</a>; |
| <a href="/avatica/downloads/avatica-go.html#source-releases">download</a> the release.</p> |
| |
| |
| </div> |
| </article> |
| |
| |
| |
| <article> |
| <h2> |
| <a href="/avatica/news/2019/05/13/release-1.15.0/"> |
| Release 1.15.0 |
| </a> |
| </h2> |
| <span class="post-category"> |
| <span class="label"> |
| release |
| </span> |
| </span> |
| <div class="post-meta"> |
| <span class="post-date"> |
| 13 May 2019 |
| </span> |
| |
| |
| |
| <a href="http://github.com/F21" class="post-author"> |
| <img src="http://github.com/F21.png" |
| class="avatar" alt="francischuang avatar" |
| width="24" height="24"> |
| francischuang |
| </a> |
| </div> |
| <div class="post-content"> |
| <!-- |
| |
| --> |
| |
| <p>Apache Calcite Avatica 1.15.0 is a small release that fixes a regression causing |
| error messages to not be propagated to clients. There is also a minor update to the |
| docker release script to automate the upload of release artifacts and build promotion. |
| See the list of <a href="/avatica/docs/history.html#v1-14-0">bug fixes and new features</a> |
| for more information.</p> |
| |
| <p>Consumers of Avatica are encouraged to skip the 1.14.0 release and upgrade directly to |
| 1.15.0 due to the aforementioned regression.</p> |
| |
| |
| |
| <p>See the <a href="/avatica/docs/history.html#v1-15-0">release notes</a>; |
| <a href="/avatica/downloads/avatica.html#source-releases">download</a> the release.</p> |
| |
| |
| </div> |
| </article> |
| |
| |
| |
| <article> |
| <h2> |
| <a href="/avatica/news/2019/04/29/release-1.14.0/"> |
| Release 1.14.0 |
| </a> |
| </h2> |
| <span class="post-category"> |
| <span class="label"> |
| release |
| </span> |
| </span> |
| <div class="post-meta"> |
| <span class="post-date"> |
| 29 Apr 2019 |
| </span> |
| |
| |
| |
| <a href="http://github.com/F21" class="post-author"> |
| <img src="http://github.com/F21.png" |
| class="avatar" alt="francischuang avatar" |
| width="24" height="24"> |
| francischuang |
| </a> |
| </div> |
| <div class="post-content"> |
| <!-- |
| |
| --> |
| |
| <p>Apache Calcite Avatica 1.14.0 includes around 13 |
| <a href="/avatica/docs/history.html#v1-14-0">bug fixes and new features</a>.</p> |
| |
| <p>A number of dependencies were upgraded for this release, with Jetty being |
| a noteworthy upgrade due to the old version having a medium severity vulnerability. |
| Avatica users are encouraged to upgrade to 1.14.0 where practical.</p> |
| |
| |
| |
| <p>See the <a href="/avatica/docs/history.html#v1-14-0">release notes</a>; |
| <a href="/avatica/downloads/avatica.html#source-releases">download</a> the release.</p> |
| |
| |
| </div> |
| </article> |
| |
| |
| |
| <article> |
| <h2> |
| <a href="/avatica/news/2018/12/04/release-1.13.0/"> |
| Release 1.13.0 |
| </a> |
| </h2> |
| <span class="post-category"> |
| <span class="label"> |
| release |
| </span> |
| </span> |
| <div class="post-meta"> |
| <span class="post-date"> |
| 04 Dec 2018 |
| </span> |
| |
| |
| |
| <a href="http://github.com/F21" class="post-author"> |
| <img src="http://github.com/F21.png" |
| class="avatar" alt="francischuang avatar" |
| width="24" height="24"> |
| francischuang |
| </a> |
| </div> |
| <div class="post-content"> |
| <!-- |
| |
| --> |
| |
| <p>Apache Calcite Avatica 1.13.0 includes more than 30 |
| <a href="/avatica/docs/history.html#v1-13-0">bug fixes and new features</a>.</p> |
| |
| |
| |
| <p>See the <a href="/avatica/docs/history.html#v1-13-0">release notes</a>; |
| <a href="/avatica/downloads/avatica.html#source-releases">download</a> the release.</p> |
| |
| |
| </div> |
| </article> |
| |
| |
| |
| <article> |
| <h2> |
| <a href="/avatica/news/2018/09/18/release-avatica-go-3.2.0/"> |
| Release Avatica Go 3.2.0 |
| </a> |
| </h2> |
| <span class="post-category"> |
| <span class="label"> |
| release |
| </span> |
| </span> |
| <div class="post-meta"> |
| <span class="post-date"> |
| 18 Sep 2018 |
| </span> |
| |
| |
| |
| <a href="http://github.com/F21" class="post-author"> |
| <img src="http://github.com/F21.png" |
| class="avatar" alt="francischuang avatar" |
| width="24" height="24"> |
| francischuang |
| </a> |
| </div> |
| <div class="post-content"> |
| <!-- |
| |
| --> |
| |
| <p>Apache Calcite Avatica Go 3.2.0 is a minor release of Avatica Go with fixes to the import paths after enabling |
| support for Go modules.</p> |
| |
| <p>The 3.1.0 release contained a bug where packages within the library used the <code class="highlighter-rouge">"github.com/apache/calcite-avatica-go"</code> |
| import path rather than the <code class="highlighter-rouge">"github.com/apache/calcite-avatica-go/v3"</code> import path. This resulted in an issue where |
| 2 versions of the library are being used at the same time, causing some programs to not build.</p> |
| |
| <p><strong>The Calcite team recommends consumers of the Avatica Go library to not use the 3.1.0 release and ensure that the |
| 3.2.0 release is being used.</strong></p> |
| |
| |
| |
| <p>See the <a href="/avatica/docs/go_history.html#v3-2-0">release notes</a>; |
| <a href="/avatica/downloads/avatica-go.html#source-releases">download</a> the release.</p> |
| |
| |
| </div> |
| </article> |
| |
| |
| |
| <article> |
| <h2> |
| <a href="/avatica/news/2018/09/10/release-avatica-go-3.1.0/"> |
| Release Avatica Go 3.1.0 |
| </a> |
| </h2> |
| <span class="post-category"> |
| <span class="label"> |
| release |
| </span> |
| </span> |
| <div class="post-meta"> |
| <span class="post-date"> |
| 10 Sep 2018 |
| </span> |
| |
| |
| |
| <a href="http://github.com/F21" class="post-author"> |
| <img src="http://github.com/F21.png" |
| class="avatar" alt="francischuang avatar" |
| width="24" height="24"> |
| francischuang |
| </a> |
| </div> |
| <div class="post-content"> |
| <!-- |
| |
| --> |
| |
| <p>Apache Calcite Avatica Go 3.1.0 is a minor release of the Avatica Go client to bring in support for Go modules. |
| This release includes updated dependencies, testing against more targets and <a href="/avatica/docs/go_history.html#v3-1-0">support for Go Modules</a>.</p> |
| |
| <p>Go 1.11 along with Go modules support was released at the end of August 2018. Go modules will become the |
| official package management solution for Go projects. As the Go team currently supports both Go 1.11 and Go 1.10, |
| the Gopkg.toml and Gopkg.lock files are still available for those using dep for package management. We plan to |
| remove support for dep when Go 1.12 is released in early 2019, so we encourage users to upgrade to Go 1.11 and use |
| Go modules where possible.</p> |
| |
| |
| |
| <p>See the <a href="/avatica/docs/go_history.html#v3-1-0">release notes</a>; |
| <a href="/avatica/downloads/avatica-go.html#source-releases">download</a> the release.</p> |
| |
| |
| </div> |
| </article> |
| |
| |
| |
| <article> |
| <h2> |
| <a href="/avatica/news/2018/06/24/release-1.12.0/"> |
| Release 1.12.0 |
| </a> |
| </h2> |
| <span class="post-category"> |
| <span class="label"> |
| release |
| </span> |
| </span> |
| <div class="post-meta"> |
| <span class="post-date"> |
| 24 Jun 2018 |
| </span> |
| |
| |
| |
| <a href="http://github.com/F21" class="post-author"> |
| <img src="http://github.com/F21.png" |
| class="avatar" alt="francischuang avatar" |
| width="24" height="24"> |
| francischuang |
| </a> |
| </div> |
| <div class="post-content"> |
| <!-- |
| |
| --> |
| |
| <p>Apache Calcite Avatica 1.12.0 includes more than 20 |
| <a href="/avatica/docs/history.html#v1-12-0">bug fixes and new features</a>. |
| ZIP archives will no longer be produced from this release onwards.</p> |
| |
| |
| |
| <p>See the <a href="/avatica/docs/history.html#v1-12-0">release notes</a>; |
| <a href="/avatica/downloads/avatica.html#source-releases">download</a> the release.</p> |
| |
| |
| </div> |
| </article> |
| |
| |
| |
| <article> |
| <h2> |
| <a href="/avatica/news/2018/04/27/release-avatica-go-3.0.0/"> |
| Release Avatica Go 3.0.0 |
| </a> |
| </h2> |
| <span class="post-category"> |
| <span class="label"> |
| release |
| </span> |
| </span> |
| <div class="post-meta"> |
| <span class="post-date"> |
| 27 Apr 2018 |
| </span> |
| |
| |
| |
| <a href="http://github.com/F21" class="post-author"> |
| <img src="http://github.com/F21.png" |
| class="avatar" alt="francischuang avatar" |
| width="24" height="24"> |
| francischuang |
| </a> |
| </div> |
| <div class="post-content"> |
| <!-- |
| |
| --> |
| |
| <p>Apache Calcite Avatica Go 3.0.0 is the first release of the Avatica <a href="https://golang.org/">Go</a> |
| <a href="https://golang.org/pkg/database/sql/">database/sql</a> driver since the code has been donated to the Apache Calcite |
| project. This release includes support for Avatica with the HSQLDB backend, updated dependencies and <a href="/avatica/docs/go_history.html#v3-0-0">bug fixes</a>.</p> |
| |
| <p>There is a breaking change where the <code class="highlighter-rouge">Name()</code> method on the <code class="highlighter-rouge">ResponseError</code> error type has been changed to a property, <code class="highlighter-rouge">Name</code>.</p> |
| |
| <p>Users of the current <code class="highlighter-rouge">Boostport/avatica</code> library are encouraged to update to this new version of <code class="highlighter-rouge">apache/calcite-avatica-go</code> |
| as further development will take place in the <code class="highlighter-rouge">apache/calcite-avatica-go</code> repository.</p> |
| |
| <p>For most users, the updating is simply replacing the import path <code class="highlighter-rouge">_ github.com/Boostport/avatica</code> with <code class="highlighter-rouge">_ github.com/apache/calcite-avatica-go</code>.</p> |
| |
| |
| |
| <p>See the <a href="/avatica/docs/go_history.html#v3-0-0">release notes</a>; |
| <a href="/avatica/downloads/avatica-go.html#source-releases">download</a> the release.</p> |
| |
| |
| </div> |
| </article> |
| |
| |
| |
| <article> |
| <h2> |
| <a href="/avatica/news/2018/03/09/release-1.11.0/"> |
| Release 1.11.0 |
| </a> |
| </h2> |
| <span class="post-category"> |
| <span class="label"> |
| release |
| </span> |
| </span> |
| <div class="post-meta"> |
| <span class="post-date"> |
| 09 Mar 2018 |
| </span> |
| |
| |
| |
| <a href="http://people.apache.org/~jhyde" class="post-author"> |
| <img src="http://github.com/julianhyde.png" |
| class="avatar" alt="jhyde avatar" |
| width="24" height="24"> |
| jhyde |
| </a> |
| </div> |
| <div class="post-content"> |
| <!-- |
| |
| --> |
| |
| <p>Apache Calcite Avatica 1.11.0 adds support for JDK 10 and drops |
| support for JDK 7. There are more than 20 |
| <a href="/avatica/docs/history.html#v1-11-0">bug fixes and new features</a>.</p> |
| |
| |
| |
| <p>See the <a href="/avatica/docs/history.html#v1-11-0">release notes</a>; |
| <a href="/avatica/downloads/avatica.html#source-releases">download</a> the release.</p> |
| |
| |
| </div> |
| </article> |
| |
| |
| |
| <article> |
| <h2> |
| <a href="/avatica/news/2017/05/30/release-1.10.0/"> |
| Release 1.10.0 |
| </a> |
| </h2> |
| <span class="post-category"> |
| <span class="label"> |
| release |
| </span> |
| </span> |
| <div class="post-meta"> |
| <span class="post-date"> |
| 30 May 2017 |
| </span> |
| |
| |
| |
| <a href="http://people.apache.org/~jhyde" class="post-author"> |
| <img src="http://github.com/julianhyde.png" |
| class="avatar" alt="jhyde avatar" |
| width="24" height="24"> |
| jhyde |
| </a> |
| </div> |
| <div class="post-content"> |
| <!-- |
| |
| --> |
| |
| <p>Apache Calcite Avatica 1.10.0 adds support for JDBC Array data, |
| Docker, and JDK 9.</p> |
| |
| <p>From this release onwards, Docker images for Avatica Server are |
| published to <a href="https://hub.docker.com/r/apache/calcite-avatica">Docker Hub</a>. These |
| make Avatica <a href="/avatica/docs/docker">easier than ever to run</a>.</p> |
| |
| <p>As the Calcite and Avatica projects become |
| <a href="/avatica/news/2016/03/03/separate-project">more separate</a>, |
| it is the first release since Avatica’s git repository |
| <a href="/avatica/news/2017/03/31/new-avatica-repository">separated from Calcite’s repository</a>.</p> |
| |
| <p>Avatica now runs on JDK 9 (and continues to run on JDK 7 and 8).</p> |
| |
| <p>Clients may now send and receive Array data via the JDBC API. |
| There are improvements to date/time support in |
| <a href="/avatica/apidocs/org/apache/calcite/avatica/util/DateTimeUtils.html">DateTimeUtils</a>, |
| and over 20 <a href="/avatica/docs/history.html#v1-10-0">other new features and bug fixes</a>.</p> |
| |
| |
| |
| <p>See the <a href="/avatica/docs/history.html#v1-10-0">release notes</a>; |
| <a href="/avatica/downloads/avatica.html#source-releases">download</a> the release.</p> |
| |
| |
| </div> |
| </article> |
| |
| |
| |
| <article> |
| <h2> |
| <a href="/avatica/news/2017/03/31/new-avatica-repository/"> |
| New Avatica Repository |
| </a> |
| </h2> |
| <span class="post-category"> |
| <span class="label"> |
| milestones |
| </span> |
| </span> |
| <div class="post-meta"> |
| <span class="post-date"> |
| 31 Mar 2017 |
| </span> |
| |
| |
| |
| <a href="http://github.com/joshelser" class="post-author"> |
| <img src="http://github.com/joshelser.png" |
| class="avatar" alt="elserj avatar" |
| width="24" height="24"> |
| elserj |
| </a> |
| </div> |
| <div class="post-content"> |
| <!-- |
| |
| --> |
| |
| <p>Roughly one year after Avatica’s Maven build was separated from Calcite’s (as |
| described in this <a href="/avatica/news/2016/03/03/separate-project/">previous post</a>), |
| Avatica now has its own Git repository.</p> |
| |
| <p>The Apache Calcite PMC felt like it was a good time to lift the Avatica project |
| out of the Calcite repository, given the continue maturation of Avatica. For developers |
| and contributors to Avatica, nothing will functionally change, except for the location |
| of the code itself.</p> |
| |
| <p>The de-facto repository can be found at the ASF’s <a href="https://gitbox.apache.org/repos/asf/calcite-avatica.git">Git hosting</a>, |
| with a mirrored-copy also available on Github at <a href="https://github.com/apache/calcite-avatica">apache/calcite-avatica</a>.</p> |
| |
| |
| </div> |
| </article> |
| |
| |
| |
| <article> |
| <h2> |
| <a href="/avatica/news/2016/11/01/release-1.9.0/"> |
| Release 1.9.0 |
| </a> |
| </h2> |
| <span class="post-category"> |
| <span class="label"> |
| release |
| </span> |
| </span> |
| <div class="post-meta"> |
| <span class="post-date"> |
| 01 Nov 2016 |
| </span> |
| |
| |
| |
| <a href="http://people.apache.org/~jhyde" class="post-author"> |
| <img src="http://github.com/julianhyde.png" |
| class="avatar" alt="jhyde avatar" |
| width="24" height="24"> |
| jhyde |
| </a> |
| </div> |
| <div class="post-content"> |
| <!-- |
| |
| --> |
| |
| <p>Apache Calcite Avatica 1.9.0 includes various improvements to make it |
| more robust and secure, while maintaining API and protocol |
| compatibility with previous versions.</p> |
| |
| <p>We now <a href="https://issues.apache.org/jira/browse/CALCITE-1224">include non-shaded and shaded artifacts</a>, |
| to make it easier to embed Avatica in your application.</p> |
| |
| <p>There are improvements to the JDBC API, adding support for |
| <a href="https://issues.apache.org/jira/browse/CALCITE-1301">canceling statements</a>, |
| and improving |
| <a href="https://issues.apache.org/jira/browse/CALCITE-1408">type conversions</a> |
| and |
| <a href="https://issues.apache.org/jira/browse/CALCITE-1410">metadata</a>.</p> |
| |
| <p>The transport is upgraded to use |
| <a href="https://issues.apache.org/jira/browse/CALCITE-1355">protobuf-3.1.0</a> |
| (previously 3.0 beta); we have also |
| <a href="https://issues.apache.org/jira/browse/CALCITE-1464">upgraded Jetty</a>.</p> |
| |
| |
| |
| <p>See the <a href="/avatica/docs/history.html#v1-9-0">release notes</a>; |
| <a href="/avatica/downloads/avatica.html#source-releases">download</a> the release.</p> |
| |
| |
| </div> |
| </article> |
| |
| |
| |
| <article> |
| <h2> |
| <a href="/avatica/news/2016/06/04/release-1.8.0/"> |
| Release 1.8.0 |
| </a> |
| </h2> |
| <span class="post-category"> |
| <span class="label"> |
| release |
| </span> |
| </span> |
| <div class="post-meta"> |
| <span class="post-date"> |
| 04 Jun 2016 |
| </span> |
| |
| |
| |
| <a href="http://github.com/joshelser" class="post-author"> |
| <img src="http://github.com/joshelser.png" |
| class="avatar" alt="elserj avatar" |
| width="24" height="24"> |
| elserj |
| </a> |
| </div> |
| <div class="post-content"> |
| <!-- |
| |
| --> |
| |
| <p>Apache Calcite Avatica 1.8.0 continues the focus on compatibility with previous |
| versions while also adding support for authentication between Avatica client and server. |
| Performance, notably on the write-path, is also major area of improvement |
| in this release, increasing as much as two to three times over previous versions |
| with the addition of new API support. The documentation for both users and developers |
| continues to receive improvements.</p> |
| |
| <p>Authentication is a major theme of this release, providing multiple layers of |
| additional authentication mechanisms over previous versions. In these earlier |
| versions, the only authentication provided by Avatica was achieved via the JDBC URL’s |
| standard user and password options. These have always been passed directly into |
| the backend database’s authentication system, but not all databases provide username |
| and password based authentication systems. <a href="https://issues.apache.org/jira/browse/CALCITE-1173">CALCITE-1173</a> |
| adds Avatica-level authentication over <a href="https://en.wikipedia.org/wiki/Basic_access_authentication">HTTP Basic</a> |
| and <a href="https://en.wikipedia.org/wiki/Digest_access_authentication">HTTP Digest</a> |
| authentication mechanisms. These are provided specifically for the case when |
| Avatica is used with a database that <em>does not already</em> provide its own authentication |
| implementation.</p> |
| |
| <p>Some systems rely on <a href="http://web.mit.edu/kerberos/">Kerberos</a> for strong, centrally- |
| managed authentication. <a href="https://issues.apache.org/jira/browse/CALCITE-1159">CALCITE-1159</a> |
| introduces Kerberos-based authentication for clients via <a href="https://en.wikipedia.org/wiki/SPNEGO">SPNEGO</a>. |
| The Avatica server can be configured to only allow clients with a valid Kerberos ticket, |
| optionally, also passing this information to the backend database to implement |
| basic “impersonation” (where the Avatica server issues requests on behalf of the end user).</p> |
| |
| <p>Building on top of the work done in Avatica-1.7.0 in <a href="https://issues.apache.org/jira/browse/CALCITE-1091">CALCITE-1091</a>, |
| this release also contains <a href="https://issues.apache.org/jira/browse/CALCITE-1128">CALCITE-1128</a> which |
| implements the batch-oriented JDBC APIs on <code class="highlighter-rouge">Statement</code>. Through careful inspection, it |
| was observed that the overall performance of Avatica clients in 100% write workloads was |
| dominated by the cost of the HTTP calls. By leveraging the <code class="highlighter-rouge">Statement#addBatch()</code> |
| and <code class="highlighter-rouge">Statement#executeBatch()</code> API calls, clients can efficiently batch multiple updates |
| in a single HTTP call. In testing this over the previous single HTTP call per update with |
| <a href="https://phoenix.apache.org">Apache Phoenix</a>, it was observed that performance increased by |
| two to three times, bringing Avatica’s performance on par with the Phoenix “native” driver.</p> |
| |
| <p>Returning back to compatibility, a new component appears in this release which is designed to |
| test versions of Avatica against each other. <a href="https://issues.apache.org/jira/browse/CALCITE-1190">CALCITE-1190</a> |
| introduces a “Technology Compatibility Kit” (TCK) which automates the testing of one version |
| of Avatica against other versions. To further ease this testing, a runnable JAR to launch |
| an HSQLDB instance and an Avatica server also makes it debut with these changes. This TCK |
| makes it much easier to run tests of newer clients against older servers and vice versa. |
| Validating the backwards compatibility that is being built is extremely important to be |
| confident in the guarantees being provided to users.</p> |
| |
| <p>Finally, a number of bugs are also fixed in the Protocol Buffer wire API. Some of these |
| include <a href="https://issues.apache.org/jira/browse/CALCITE-1113">CALCITE-1113</a> and |
| <a href="https://issues.apache.org/jira/browse/CALCITE-1103">CALCITE-1103</a> which fix how certain |
| numbers are serialized, <a href="https://issues.apache.org/jira/browse/CALCITE-1243">CALITE-1243</a> |
| which corrects some fields in Protocol Buffer messages which were incorrectly marked |
| as unsigned integers instead of signed integers, and <a href="https://issues.apache.org/jira/browse/CALCITE-1209">CALCITE-1209</a> |
| which removes incorrect parsing of binary fields as Base64-encoded strings. All of |
| these issues are fixed in a backwards-compatible manner and should have no additional negative |
| impact on older clients (older clients will not break, but they may continue to return |
| incorrect data for certain numbers).</p> |
| |
| <p>For users of the Avatica driver, a new <a href="/avatica/docs/client_reference.html">client reference page</a> |
| is added which details the options that are available in the Avatica JDBC Driver’s URL. |
| The wire API documentation for Protocol Buffers continues to receive updates as the API continues to evolve.</p> |
| |
| |
| |
| <p>See the <a href="/avatica/docs/history.html#v1-8-0">release notes</a>; |
| <a href="/avatica/downloads/avatica.html#source-releases">download</a> the release.</p> |
| |
| |
| </div> |
| </article> |
| |
| |
| |
| <article> |
| <h2> |
| <a href="/avatica/news/2016/03/18/release-1.7.1/"> |
| Release 1.7.1 |
| </a> |
| </h2> |
| <span class="post-category"> |
| <span class="label"> |
| release |
| </span> |
| </span> |
| <div class="post-meta"> |
| <span class="post-date"> |
| 18 Mar 2016 |
| </span> |
| |
| |
| |
| <a href="http://github.com/joshelser" class="post-author"> |
| <img src="http://github.com/joshelser.png" |
| class="avatar" alt="elserj avatar" |
| width="24" height="24"> |
| elserj |
| </a> |
| </div> |
| <div class="post-content"> |
| <!-- |
| |
| --> |
| |
| <p>Apache Calcite’s PMC has just released Avatica 1.7.1, the first |
| release of <a href="http://calcite.apache.org/avatica/">Avatica</a> as an |
| independent project. We’re excited because it makes Avatica easier to |
| use, and allows us to be more agile in our release schedule.</p> |
| |
| <p>(Avatica was previously released as part of Calcite. Avatica is still |
| governed by Apache Calcite’s PMC, and stored in the same git |
| repository as Calcite, but releases are no longer synchronized, and |
| Avatica does not depend on any Calcite modules.)</p> |
| |
| <p>A significant portion of the work of this release was “Maven work” to |
| separate the build and release processes, but there were several |
| important bug fixes, including a security fix for Jetty (see below).</p> |
| |
| <p>Performance, specifically on the write path, was a big focus in this |
| release. |
| [<a href="https://issues.apache.org/jira/browse/CALCITE-1091">CALCITE-1091</a>] |
| contained a number of important changes. Some of these changes (e.g. |
| [<a href="https://issues.apache.org/jira/browse/CALCITE-1092">CALCITE-1092</a>] |
| and |
| [<a href="https://issues.apache.org/jira/browse/CALCITE-1093">CALCITE-1093</a>]) |
| were related to heap usage in the Avatica server, while |
| [<a href="https://issues.apache.org/jira/browse/CALCITE-1094">CALCITE-1094</a>] |
| and |
| [<a href="https://issues.apache.org/jira/browse/CALCITE-1117">CALCITE-1117</a>] |
| were strictly performance-related.</p> |
| |
| <p>The latter improved performance the most. Switching to the |
| <a href="http://hc.apache.org/">Apache Commons HttpComponents Client</a> |
| library instead of using the Java platform’s built-in |
| <a href="https://docs.oracle.com/javase/7/docs/api/java/net/HttpURLConnection.html">HttpURLConnection</a>, |
| we noticed a 15% improvement in pure write workloads.</p> |
| |
| <p>Three dependent library upgrades:</p> |
| |
| <ul> |
| <li>We completely removed |
| <a href="https://commons.apache.org/proper/commons-logging/">Commons Logging</a> |
| in favor of <a href="http://slf4j.org/">SLF4J</a> in |
| [<a href="https://issues.apache.org/jira/browse/CALCITE-669">CALCITE-669</a>]. |
| This logging framework update will allow downstream integrators to |
| use the logging implementation of their choice instead of being |
| forced to inherit Commons Logging.</li> |
| <li>We upgraded Jackson from 2.1.1 to 2.6.3 in |
| [<a href="https://issues.apache.org/jira/browse/CALCITE-1021">CALCITE-1021</a>].</li> |
| <li>We upgraded Jetty from 9.2.7.v20150116 to 9.2.15.v20160210 in |
| [<a href="https://issues.apache.org/jira/browse/CALCITE-1156">CALCITE-1156</a>] |
| to fix a |
| <a href="https://blog.gdssecurity.com/labs/2015/2/25/jetleak-vulnerability-remote-leakage-of-shared-buffers-in-je.html">security issue</a>.</li> |
| </ul> |
| |
| <p>Note that Avatica’s Maven coordinates have changed. The <code class="highlighter-rouge">groupId</code> is |
| now “org.apache.calcite.avatica” (previously “org.apache.calcite”), |
| and <code class="highlighter-rouge">artifactId</code>s are |
| “avatica”, |
| “avatica-metrics”, |
| “avatica-metrics-dropwizardmetrics3”, |
| “avatica-noop-driver”, |
| “avatica-server” |
| (previously “calcite-avatica”, etc.). Make sure to update these when |
| upgrading to this version.</p> |
| |
| |
| |
| <p>See the <a href="/avatica/docs/history.html#v1-7-1">release notes</a>; |
| <a href="/avatica/downloads/avatica.html#source-releases">download</a> the release.</p> |
| |
| |
| </div> |
| </article> |
| |
| |
| |
| <article> |
| <h2> |
| <a href="/avatica/news/2016/03/03/separate-project/"> |
| Splitting Avatica from Calcite |
| </a> |
| </h2> |
| <span class="post-category"> |
| <span class="label"> |
| milestones |
| </span> |
| </span> |
| <div class="post-meta"> |
| <span class="post-date"> |
| 03 Mar 2016 |
| </span> |
| |
| |
| |
| <a href="http://github.com/joshelser" class="post-author"> |
| <img src="http://github.com/joshelser.png" |
| class="avatar" alt="elserj avatar" |
| width="24" height="24"> |
| elserj |
| </a> |
| </div> |
| <div class="post-content"> |
| <!-- |
| |
| --> |
| |
| <p>This marks the separation of Avatica from its previous location as a sub-module |
| of Apache Calcite’s Maven build.</p> |
| |
| <p>This separation is not to remove Avatica from |
| the governance of the Apache Calcite project, but to allow for even more rapid |
| releases from both the Avatica and Calcite projects. We can confidently make new |
| releases of each without having to worry about the current state of development |
| features in the other.</p> |
| |
| |
| </div> |
| </article> |
| |
| |
| |
| <p></p> |
| |
| <h2>Calcite Twitter</h2> |
| |
| <p>The official <a href="https://twitter.com/ApacheCalcite">@ApacheCalcite</a> |
| Twitter account pushes announcements about Calcite. If you give a talk about |
| Calcite, let us know and we'll tweet it out and add it to the news section |
| of the website.</p> |
| |
| </div> |
| |
| <div class="unit one-fifth hide-on-mobiles"> |
| <aside> |
| <ul> |
| <li class="current"> |
| <a href="/avatica/news/">All News</a> |
| </li> |
| <li class=""> |
| <a href="/avatica/news/avatica-releases/">Avatica Releases</a> |
| </li> |
| <li class=""> |
| <a href="/avatica/news/avatica-go-releases/">Avatica Go Releases</a> |
| </li> |
| </ul> |
| <h4>Recent Releases</h4> |
| <ul> |
| |
| <li class=""> |
| <a href="/avatica/news/2019/05/16/release-avatica-go-4.0.0/">avatica-go 4.0.0</a> |
| </li> |
| |
| <li class=""> |
| <a href="/avatica/news/2019/05/13/release-1.15.0/">avatica 1.15.0</a> |
| </li> |
| |
| <li class=""> |
| <a href="/avatica/news/2019/04/29/release-1.14.0/">avatica 1.14.0</a> |
| </li> |
| |
| <li class=""> |
| <a href="/avatica/news/2018/12/04/release-1.13.0/">avatica 1.13.0</a> |
| </li> |
| |
| <li class=""> |
| <a href="/avatica/news/2018/09/18/release-avatica-go-3.2.0/">avatica-go 3.2.0</a> |
| </li> |
| |
| </ul> |
| <h4>Other News</h4> |
| <ul> |
| |
| <li class=""> |
| <a href="/avatica/news/2017/03/31/new-avatica-repository/">New Avatica Repository</a> |
| </li> |
| |
| <li class=""> |
| <a href="/avatica/news/2016/03/03/separate-project/">Splitting Avatica from Calcite</a> |
| </li> |
| |
| </ul> |
| </aside> |
| </div> |
| |
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| <div class="clear"></div> |
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