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From mj...@apache.org
Subject [kafka] branch 1.1 updated: MINOR: add missing parameter `processing.guaratees` to Streams docs (#5023)
Date Wed, 16 May 2018 21:00:12 GMT
This is an automated email from the ASF dual-hosted git repository.

mjsax pushed a commit to branch 1.1
in repository https://gitbox.apache.org/repos/asf/kafka.git


The following commit(s) were added to refs/heads/1.1 by this push:
     new b532ee2  MINOR: add missing parameter `processing.guaratees` to Streams docs (#5023)
b532ee2 is described below

commit b532ee218e01baccc0ff8c4b1df586577637de50
Author: Matthias J. Sax <mjsax@apache.org>
AuthorDate: Wed May 16 13:58:25 2018 -0700

    MINOR: add missing parameter `processing.guaratees` to Streams docs (#5023)
    
    Reviewers: Guozhang Wang <guozhang@confluent.io>, Bill Bejeck <bill@confluent.io>
---
 docs/streams/developer-guide/config-streams.html | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/docs/streams/developer-guide/config-streams.html b/docs/streams/developer-guide/config-streams.html
index d1f3aa4..75f155b 100644
--- a/docs/streams/developer-guide/config-streams.html
+++ b/docs/streams/developer-guide/config-streams.html
@@ -75,6 +75,7 @@
             <li><a class="reference internal" href="#num-standby-replicas" id="id10">num.standby.replicas</a></li>
             <li><a class="reference internal" href="#num-stream-threads" id="id11">num.stream.threads</a></li>
             <li><a class="reference internal" href="#partition-grouper" id="id12">partition.grouper</a></li>
+            <li><a class="reference internal" href="#processing-guarantee" id="id25">processing.guarantee</a></li>
             <li><a class="reference internal" href="#replication-factor" id="id13">replication.factor</a></li>
             <li><a class="reference internal" href="#state-dir" id="id14">state.dir</a></li>
             <li><a class="reference internal" href="#timestamp-extractor" id="id15">timestamp.extractor</a></li>
@@ -262,6 +263,11 @@
             <td colspan="2">Partition grouper class that implements the <code class="docutils
literal"><span class="pre">PartitionGrouper</span></code> interface.</td>
             <td>See <a class="reference internal" href="#streams-developer-guide-partition-grouper"><span
class="std std-ref">Partition Grouper</span></a></td>
           </tr>
+          <tr class="row-even"><td>processing.guarantee</td>
+            <td>Low</td>
+            <td colspan="2">The processing mode. Can be either <code class="docutils
literal"><span class="pre">"at_least_once"</span></code> (default) or
<code class="docutils literal"><span class="pre">"exactly_once"</span></code>.
+            <td>See <a class="reference internal" href="#streams-developer-guide-processing-guarantedd"><span
class="std std-ref">Processing Guarantee</span></a></td>
+          </tr>
           <tr class="row-odd"><td>poll.ms</td>
             <td>Low</td>
             <td colspan="2">The amount of time in milliseconds to block waiting for
input.</td>
@@ -403,6 +409,19 @@
               It assigns each task with one partition for each of the source topic partitions.
The generated number of tasks equals the largest
               number of partitions among the input topics. Usually an application does not
need to customize the partition grouper.</div></blockquote>
         </div>
+        <div class="section" id="processing-guarantee">
+          <span id="streams-developer-guide-processing-guarantee"></span><h4><a
class="toc-backref" href="#id25">processing.guarantee</a><a class="headerlink"
href="#processing-guarantee" title="Permalink to this headline"></a></h4>
+          <blockquote>
+            <div>The processing guarantee that should be used. Possible values are
<code class="docutils literal"><span class="pre">"at_least_once"</span></code>
(default) and <code class="docutils literal"><span class="pre">"exactly_once"</span></code>.
+                 Note that if exactly-once processing is enabled, the default for parameter
<code class="docutils literal"><span class="pre">commit.interval.ms</span></code>
changes to 100ms.
+                 Additionally, consumers are configured with <code class="docutils literal"><span
class="pre">isolation.level="read_committed"</span></code>
+                 and producers are configured with <code class="docutils literal"><span
class="pre">retries=Integer.MAX_VALUE</span></code>, <code class="docutils
literal"><span class="pre">enable.idempotence=true</span></code>,
+                 and <code class="docutils literal"><span class="pre">max.in.flight.requests.per.connection=1</span></code>
per default.
+                 Note that by default exactly-once processing requires a cluster of at least
three brokers what is the recommended setting for production.
+                 For development you can change this, by adjusting broker setting <code
class="docutils literal"><span class="pre">transaction.state.log.replication.factor</span></code>
to the number of broker you want to use.
+                 For more details see <a href="../core-concepts#streams_processing_guarantee">Processing
Guarantees</a>.
+            </div></blockquote>
+        </div>
         <div class="section" id="replication-factor">
           <span id="replication-factor-parm"></span><h4><a class="toc-backref"
href="#id13">replication.factor</a><a class="headerlink" href="#replication-factor"
title="Permalink to this headline"></a></h4>
           <blockquote>

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