This is an automated email from the ASF dual-hosted git repository. mergebot-role pushed a commit to branch asf-site in repository https://gitbox.apache.org/repos/asf/beam-site.git
commit e6f055ed689b8ece30276be856ab91e42bdc2e03 Author: Mergebot <merge...@apache.org> AuthorDate: Mon Jan 22 10:18:17 2018 -0800 Prepare repository for deployment. --- content/documentation/programming-guide/index.html | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/content/documentation/programming-guide/index.html b/content/documentation/programming-guide/index.html index 4af91c1..1794b85 100644 --- a/content/documentation/programming-guide/index.html +++ b/content/documentation/programming-guide/index.html @@ -805,12 +805,12 @@ finite length. An unbounded <code class="highlighter-rouge">PCollection</code> m job that runs continuously, as the entire collection can never be available for processing at any one time.</p> -<p>When performing an operation that groups elements in an unbounded <code class="highlighter-rouge">PCollection</code>, -Beam requires a concept called <strong>windowing</strong> to divide a continuously updating -data set into logical windows of finite size. Beam processes each window as a -bundle, and processing continues as the data set is generated. These logical -windows are determined by some characteristic associated with a data element, -such as a <strong>timestamp</strong>.</p> +<p>Beam uses <a href="#windowing">windowing</a> to divide a continuously updating unbounded +<code class="highlighter-rouge">PCollection</code> into logical windows of finite size. These logical windows are +determined by some characteristic associated with a data element, such as a +<strong>timestamp</strong>. Aggregation transforms (such as <code class="highlighter-rouge">GroupByKey</code> and <code class="highlighter-rouge">Combine</code>) work +on a per-window basis — as the data set is generated, they process each +<code class="highlighter-rouge">PCollection</code> as a succession of these finite windows.</p> <h4 id="element-timestamps">3.2.5. Element timestamps</h4> -- To stop receiving notification emails like this one, please contact mergebot-r...@apache.org.