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| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.storm.kafka.spout</a></div> |
| <h1 title="Enum KafkaSpoutConfig.ProcessingGuarantee" class="title">Enum KafkaSpoutConfig.ProcessingGuarantee</h1> |
| </div> |
| <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a> |
| <div class="inheritance"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.html" title="class or interface in java.lang" class="external-link">java.lang.Enum</a><<a href="KafkaSpoutConfig.ProcessingGuarantee.html" title="enum in org.apache.storm.kafka.spout">KafkaSpoutConfig.ProcessingGuarantee</a>> |
| <div class="inheritance">org.apache.storm.kafka.spout.KafkaSpoutConfig.ProcessingGuarantee</div> |
| </div> |
| </div> |
| <section class="class-description" id="class-description"> |
| <dl class="notes"> |
| <dt>All Implemented Interfaces:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/Serializable.html" title="class or interface in java.io" class="external-link">Serializable</a></code>, <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Comparable.html" title="class or interface in java.lang" class="external-link">Comparable</a><<a href="KafkaSpoutConfig.ProcessingGuarantee.html" title="enum in org.apache.storm.kafka.spout">KafkaSpoutConfig.ProcessingGuarantee</a>></code>, <code>java.lang.constant.Constable</code></dd> |
| </dl> |
| <dl class="notes"> |
| <dt>Enclosing class:</dt> |
| <dd><a href="KafkaSpoutConfig.html" title="class in org.apache.storm.kafka.spout">KafkaSpoutConfig</a><<a href="KafkaSpoutConfig.html" title="type parameter in KafkaSpoutConfig">K</a>,<wbr><a href="KafkaSpoutConfig.html" title="type parameter in KafkaSpoutConfig">V</a>></dd> |
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| <div class="type-signature"><span class="annotations"><a href="../../annotation/InterfaceStability.Unstable.html" title="annotation in org.apache.storm.annotation">@Unstable</a> |
| </span><span class="modifiers">public static enum </span><span class="element-name type-name-label">KafkaSpoutConfig.ProcessingGuarantee</span> |
| <span class="extends-implements">extends <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.html" title="class or interface in java.lang" class="external-link">Enum</a><<a href="KafkaSpoutConfig.ProcessingGuarantee.html" title="enum in org.apache.storm.kafka.spout">KafkaSpoutConfig.ProcessingGuarantee</a>></span></div> |
| <div class="block">This enum controls when the tuple with the <code>ConsumerRecord</code> for an offset is marked as processed, |
| i.e. when the offset can be committed to Kafka. The default value is AT_LEAST_ONCE. |
| The commit interval is controlled by <a href="KafkaSpoutConfig.html#getOffsetsCommitPeriodMs()"><code>KafkaSpoutConfig.getOffsetsCommitPeriodMs()</code></a>, if the mode commits on an interval. |
| NO_GUARANTEE may be removed in a later release without warning, we're still evaluating whether it makes sense to keep.</div> |
| </section> |
| <section class="summary"> |
| <ul class="summary-list"> |
| <!-- ======== NESTED CLASS SUMMARY ======== --> |
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| <h2>Nested Class Summary</h2> |
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| <h2 id="nested-classes-inherited-from-class-java.lang.Enum">Nested classes/interfaces inherited from class java.lang.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.html" title="class or interface in java.lang" class="external-link">Enum</a></h2> |
| <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.EnumDesc.html" title="class or interface in java.lang" class="external-link">Enum.EnumDesc</a><<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.EnumDesc.html" title="class or interface in java.lang" class="external-link">E</a> extends <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.html" title="class or interface in java.lang" class="external-link">Enum</a><<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.EnumDesc.html" title="class or interface in java.lang" class="external-link">E</a>>></code></div> |
| </section> |
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| <!-- =========== ENUM CONSTANT SUMMARY =========== --> |
| <li> |
| <section class="constants-summary" id="enum-constant-summary"> |
| <h2>Enum Constant Summary</h2> |
| <div class="caption"><span>Enum Constants</span></div> |
| <div class="summary-table two-column-summary"> |
| <div class="table-header col-first">Enum Constant</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color"><code><a href="#AT_LEAST_ONCE" class="member-name-link">AT_LEAST_ONCE</a></code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">An offset is ready to commit only after the corresponding tuple has been processed and acked (at least once).</div> |
| </div> |
| <div class="col-first odd-row-color"><code><a href="#AT_MOST_ONCE" class="member-name-link">AT_MOST_ONCE</a></code></div> |
| <div class="col-last odd-row-color"> |
| <div class="block">Every offset will be synchronously committed to Kafka right after being polled but before being emitted to the downstream |
| components of the topology.</div> |
| </div> |
| <div class="col-first even-row-color"><code><a href="#NO_GUARANTEE" class="member-name-link">NO_GUARANTEE</a></code></div> |
| <div class="col-last even-row-color"> |
| <div class="block">The polled offsets are ready to commit immediately after being polled.</div> |
| </div> |
| </div> |
| </section> |
| </li> |
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| <li> |
| <section class="method-summary" id="method-summary"> |
| <h2>Method Summary</h2> |
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| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Method</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="KafkaSpoutConfig.ProcessingGuarantee.html" title="enum in org.apache.storm.kafka.spout">KafkaSpoutConfig.ProcessingGuarantee</a></code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#valueOf(java.lang.String)" class="member-name-link">valueOf</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a> name)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Returns the enum constant of this type with the specified name.</div> |
| </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="KafkaSpoutConfig.ProcessingGuarantee.html" title="enum in org.apache.storm.kafka.spout">KafkaSpoutConfig.ProcessingGuarantee</a>[]</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#values()" class="member-name-link">values</a>()</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> |
| <div class="block">Returns an array containing the constants of this enum type, in |
| the order they are declared.</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-java.lang.Enum">Methods inherited from class java.lang.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.html" title="class or interface in java.lang" class="external-link">Enum</a></h3> |
| <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.html#compareTo(E)" title="class or interface in java.lang" class="external-link">compareTo</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.html#describeConstable()" title="class or interface in java.lang" class="external-link">describeConstable</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.html#getDeclaringClass()" title="class or interface in java.lang" class="external-link">getDeclaringClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.html#name()" title="class or interface in java.lang" class="external-link">name</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.html#ordinal()" title="class or interface in java.lang" class="external-link">ordinal</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.html#toString()" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Enum.html#valueOf(java.lang.Class,java.lang.String)" title="class or interface in java.lang" class="external-link">valueOf</a></code></div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class java.lang.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3> |
| <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ============ ENUM CONSTANT DETAIL =========== --> |
| <li> |
| <section class="constant-details" id="enum-constant-detail"> |
| <h2>Enum Constant Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="AT_LEAST_ONCE"> |
| <h3>AT_LEAST_ONCE</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="KafkaSpoutConfig.ProcessingGuarantee.html" title="enum in org.apache.storm.kafka.spout">KafkaSpoutConfig.ProcessingGuarantee</a></span> <span class="element-name">AT_LEAST_ONCE</span></div> |
| <div class="block">An offset is ready to commit only after the corresponding tuple has been processed and acked (at least once). If a tuple fails or |
| times out it will be re-emitted, as controlled by the <a href="KafkaSpoutRetryService.html" title="interface in org.apache.storm.kafka.spout"><code>KafkaSpoutRetryService</code></a>. Commits synchronously on the defined |
| interval.</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="AT_MOST_ONCE"> |
| <h3>AT_MOST_ONCE</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="KafkaSpoutConfig.ProcessingGuarantee.html" title="enum in org.apache.storm.kafka.spout">KafkaSpoutConfig.ProcessingGuarantee</a></span> <span class="element-name">AT_MOST_ONCE</span></div> |
| <div class="block">Every offset will be synchronously committed to Kafka right after being polled but before being emitted to the downstream |
| components of the topology. The commit interval is ignored. This mode guarantees that the offset is processed at most once by |
| ensuring the spout won't retry tuples that fail or time out after the commit to Kafka has been done</div> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="NO_GUARANTEE"> |
| <h3>NO_GUARANTEE</h3> |
| <div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="KafkaSpoutConfig.ProcessingGuarantee.html" title="enum in org.apache.storm.kafka.spout">KafkaSpoutConfig.ProcessingGuarantee</a></span> <span class="element-name">NO_GUARANTEE</span></div> |
| <div class="block">The polled offsets are ready to commit immediately after being polled. The offsets are committed periodically, i.e. a message may |
| be processed 0, 1 or more times. This behavior is similar to setting enable.auto.commit=true in the consumer, but allows the |
| spout to control when commits occur. Commits asynchronously on the defined interval.</div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method-detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="values()"> |
| <h3>values</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="KafkaSpoutConfig.ProcessingGuarantee.html" title="enum in org.apache.storm.kafka.spout">KafkaSpoutConfig.ProcessingGuarantee</a>[]</span> <span class="element-name">values</span>()</div> |
| <div class="block">Returns an array containing the constants of this enum type, in |
| the order they are declared.</div> |
| <dl class="notes"> |
| <dt>Returns:</dt> |
| <dd>an array containing the constants of this enum type, in the order they are declared</dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="valueOf(java.lang.String)"> |
| <h3>valueOf</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="KafkaSpoutConfig.ProcessingGuarantee.html" title="enum in org.apache.storm.kafka.spout">KafkaSpoutConfig.ProcessingGuarantee</a></span> <span class="element-name">valueOf</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a> name)</span></div> |
| <div class="block">Returns the enum constant of this type with the specified name. |
| The string must match <i>exactly</i> an identifier used to declare an |
| enum constant in this type. (Extraneous whitespace characters are |
| not permitted.)</div> |
| <dl class="notes"> |
| <dt>Parameters:</dt> |
| <dd><code>name</code> - the name of the enum constant to be returned.</dd> |
| <dt>Returns:</dt> |
| <dd>the enum constant with the specified name</dd> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/IllegalArgumentException.html" title="class or interface in java.lang" class="external-link">IllegalArgumentException</a></code> - if this enum type has no constant with the specified name</dd> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/NullPointerException.html" title="class or interface in java.lang" class="external-link">NullPointerException</a></code> - if the argument is null</dd> |
| </dl> |
| </section> |
| </li> |
| </ul> |
| </section> |
| </li> |
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