<!DOCTYPE html><html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>Kafka Connector · Apache Pulsar</title><meta name="viewport" content="width=device-width, initial-scale=1.0"/><meta name="generator" content="Docusaurus"/><meta name="description" content="## Source"/><meta name="docsearch:version" content="2.5.1"/><meta name="docsearch:language" content="en"/><meta property="og:title" content="Kafka Connector · Apache Pulsar"/><meta property="og:type" content="website"/><meta property="og:url" content="https://pulsar.apache.org/"/><meta property="og:description" content="## Source"/><meta name="twitter:card" content="summary"/><meta name="twitter:image" content="https://pulsar.apache.org/img/pulsar.svg"/><link rel="shortcut icon" href="/img/pulsar.ico"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/atom-one-dark.min.css"/><link rel="alternate" type="application/atom+xml" href="https://pulsar.apache.org/blog/atom.xml" title="Apache Pulsar Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://pulsar.apache.org/blog/feed.xml" title="Apache Pulsar Blog RSS Feed"/><link rel="stylesheet" href="/css/code-blocks-buttons.css"/><script type="text/javascript" src="https://buttons.github.io/buttons.js"></script><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.0/clipboard.min.js"></script><script type="text/javascript" src="/js/custom.js"></script><script src="/js/scrollSpy.js"></script><link rel="stylesheet" href="/css/main.css"/><script src="/js/codetabs.js"></script></head><body class="sideNavVisible separateOnPageNav"><div class="fixedHeaderContainer"><div class="headerWrapper wrapper"><header><a href="/en"><img class="logo" src="/img/pulsar.svg" alt="Apache Pulsar"/></a><a href="/en/versions"><h3>2.5.1</h3></a><div class="navigationWrapper navigationSlider"><nav class="slidingNav"><ul class="nav-site nav-site-internal"><li class=""><a href="/docs/en/2.5.1/getting-started-standalone" target="_self">Docs</a></li><li class=""><a href="/en/download" target="_self">Download</a></li><li class=""><a href="/docs/en/2.5.1/client-libraries" target="_self">Clients</a></li><li class=""><a href="#restapis" target="_self">REST APIs</a></li><li class=""><a href="#cli" target="_self">Cli</a></li><li class=""><a href="/blog/" target="_self">Blog</a></li><li class=""><a href="#community" target="_self">Community</a></li><li class=""><a href="#apache" target="_self">Apache</a></li><li class=""><a href="https://pulsar-next.staged.apache.org/" target="_self">New Website (Beta)</a></li><span><li><a id="languages-menu" href="#"><img class="languages-icon" src="/img/language.svg" alt="Languages icon"/>English</a><div id="languages-dropdown" class="hide"><ul id="languages-dropdown-items"><li><a href="/docs/ja/2.5.1/io-kafka">日本語</a></li><li><a href="/docs/fr/2.5.1/io-kafka">Français</a></li><li><a href="/docs/ko/2.5.1/io-kafka">한국어</a></li><li><a href="/docs/zh-CN/2.5.1/io-kafka">中文</a></li><li><a href="/docs/zh-TW/2.5.1/io-kafka">繁體中文</a></li><li><a href="https://crowdin.com/project/apache-pulsar" target="_blank" rel="noreferrer noopener">Help Translate</a></li></ul></div></li><script>
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<p>The Kafka Source Connector is used to pull messages from Kafka topics and persist the messages
to a Pulsar topic.</p>
<h3><a class="anchor" aria-hidden="true" id="source-configuration-options"></a><a href="#source-configuration-options" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Source Configuration Options</h3>
<table>
<thead>
<tr><th>Name</th><th>Required</th><th>Default</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td>bootstrapServers</td><td><code>true</code></td><td><code>null</code></td><td>A list of host/port pairs to use for establishing the initial connection to the Kafka cluster.</td></tr>
<tr><td>groupId</td><td><code>true</code></td><td><code>null</code></td><td>A unique string that identifies the consumer group this consumer belongs to.</td></tr>
<tr><td>fetchMinBytes</td><td><code>false</code></td><td><code>1</code></td><td>Minimum bytes expected for each fetch response.</td></tr>
<tr><td>autoCommitEnabled</td><td><code>false</code></td><td><code>true</code></td><td>If true, the consumer's offset will be periodically committed in the background. This committed offset will be used when the process fails as the position from which the new consumer will begin.</td></tr>
<tr><td>autoCommitIntervalMs</td><td><code>false</code></td><td><code>5000</code></td><td>The frequency in milliseconds that the consumer offsets are auto-committed to Kafka if <code>autoCommitEnabled</code> is set to true.</td></tr>
<tr><td>heartbeatIntervalMs</td><td><code>false</code></td><td><code>3000</code></td><td>The interval between heartbeats to the consumer when using Kafka's group management facilities.</td></tr>
<tr><td>sessionTimeoutMs</td><td><code>false</code></td><td><code>30000</code></td><td>The timeout used to detect consumer failures when using Kafka's group management facility.</td></tr>
<tr><td>topic</td><td><code>true</code></td><td><code>null</code></td><td>Topic name to receive records from Kafka.</td></tr>
<tr><td>consumerConfigProperties</td><td><code>false</code></td><td><code>null</code></td><td>The consumer config properties to be passed to Consumer. Note that other properties specified in the connector config file take precedence over this config.</td></tr>
<tr><td>keyDeserializationClass</td><td><code>false</code></td><td><code>org.apache.kafka.common.serialization.StringDeserializer</code></td><td>Deserializer class for key that implements the org.apache.kafka.common.serialization.Deserializer interface.</td></tr>
<tr><td>valueDeserializationClass</td><td><code>false</code></td><td><code>org.apache.kafka.common.serialization.ByteArrayDeserializer</code></td><td>Deserializer class for value that implements the org.apache.kafka.common.serialization.Deserializer interface.</td></tr>
</tbody>
</table>
<h2><a class="anchor" aria-hidden="true" id="sink"></a><a href="#sink" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Sink</h2>
<p>The Kafka Sink Connector is used to pull messages from Pulsar topics and persist the messages
to a Kafka topic.</p>
<h3><a class="anchor" aria-hidden="true" id="sink-configuration-options"></a><a href="#sink-configuration-options" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Sink Configuration Options</h3>
<table>
<thead>
<tr><th>Name</th><th>Required</th><th>Default</th><th>Description</th></tr>
</thead>
<tbody>
<tr><td>bootstrapServers</td><td><code>true</code></td><td><code>null</code></td><td>A list of host/port pairs to use for establishing the initial connection to the Kafka cluster.</td></tr>
<tr><td>acks</td><td><code>true</code></td><td><code>null</code></td><td>The kafka producer acks mode.</td></tr>
<tr><td>batchSize</td><td><code>false</code></td><td><code>16384</code></td><td>The kafka producer batch size.</td></tr>
<tr><td>maxRequestSize</td><td><code>false</code></td><td><code>1048576</code></td><td>The maximum size of a request in bytes.</td></tr>
<tr><td>topic</td><td><code>true</code></td><td><code>null</code></td><td>Topic name to receive records from Kafka.</td></tr>
<tr><td>producerConfigProperties</td><td><code>false</code></td><td><code>null</code></td><td>The producer config properties to be passed to Producer. Note that other properties specified in the connector config file take precedence over this config.</td></tr>
<tr><td>keySerializerClass</td><td><code>false</code></td><td><code>org.apache.kafka.common.serialization.StringSerializer</code></td><td>Serializer class for value that implements the org.apache.kafka.common.serialization.Serializer interface.</td></tr>
<tr><td>valueSerializerClass</td><td><code>false</code></td><td><code>org.apache.kafka.common.serialization.ByteArraySerializer</code></td><td>Serializer class for value that implements the org.apache.kafka.common.serialization.Serializer interface.</td></tr>
</tbody>
</table>
</span></div></article></div><div class="docs-prevnext"></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#source">Source</a><ul class="toc-headings"><li><a href="#source-configuration-options">Source Configuration Options</a></li></ul></li><li><a href="#sink">Sink</a><ul class="toc-headings"><li><a href="#sink-configuration-options">Sink Configuration Options</a></li></ul></li></ul></nav></div><footer class="nav-footer" id="footer"><section class="copyright">Copyright © 2022 The Apache Software Foundation. All Rights Reserved. Apache, Apache Pulsar and the Apache feather logo are trademarks of The Apache Software Foundation.</section><span><script>
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