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From jsto...@apache.org
Subject svn commit: r1811008 [12/43] - in /nifi/site/trunk/docs: ./ nifi-docs/ nifi-docs/components/ nifi-docs/components/org.apache.nifi/ nifi-docs/components/org.apache.nifi/nifi-ambari-nar/ nifi-docs/components/org.apache.nifi/nifi-ambari-nar/1.4.0/ nifi-do...
Date Tue, 03 Oct 2017 13:30:27 GMT
Added: nifi/site/trunk/docs/nifi-docs/components/org.apache.nifi/nifi-kafka-0-11-nar/1.4.0/org.apache.nifi.processors.kafka.pubsub.ConsumeKafka_0_11/index.html
URL: http://svn.apache.org/viewvc/nifi/site/trunk/docs/nifi-docs/components/org.apache.nifi/nifi-kafka-0-11-nar/1.4.0/org.apache.nifi.processors.kafka.pubsub.ConsumeKafka_0_11/index.html?rev=1811008&view=auto
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--- nifi/site/trunk/docs/nifi-docs/components/org.apache.nifi/nifi-kafka-0-11-nar/1.4.0/org.apache.nifi.processors.kafka.pubsub.ConsumeKafka_0_11/index.html (added)
+++ nifi/site/trunk/docs/nifi-docs/components/org.apache.nifi/nifi-kafka-0-11-nar/1.4.0/org.apache.nifi.processors.kafka.pubsub.ConsumeKafka_0_11/index.html Tue Oct  3 13:30:16 2017
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+<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>ConsumeKafka_0_11</title><link rel="stylesheet" href="../../../../../css/component-usage.css" type="text/css"></link></head><script type="text/javascript">window.onload = function(){if(self==top) { document.getElementById('nameHeader').style.display = "inherit"; } }</script><body><h1 id="nameHeader" style="display: none;">ConsumeKafka_0_11</h1><h2>Description: </h2><p>Consumes messages from Apache Kafka specifically built against the Kafka 0.11.x Consumer API.  Please note there are cases where the publisher can get into an indefinite stuck state.  We are closely monitoring how this evolves in the Kafka community and will take advantage of those fixes as soon as we can.  In the meantime it is possible to enter states where the only resolution will be to restart the JVM NiFi runs on. The complementary NiFi processor for sending messages is PublishKafka_0_11.</p><h3>Tags: </h3><p>Kafka, Get, Ingest, Ingress, Topi
 c, PubSub, Consume, 0.11.x</p><h3>Properties: </h3><p>In the list below, the names of required properties appear in <strong>bold</strong>. Any other properties (not in bold) are considered optional. The table also indicates any default values, and whether a property supports the <a href="../../../../../html/expression-language-guide.html">NiFi Expression Language</a>.</p><table id="properties"><tr><th>Name</th><th>Default Value</th><th>Allowable Values</th><th>Description</th></tr><tr><td id="name"><strong>Kafka Brokers</strong></td><td id="default-value">localhost:9092</td><td id="allowable-values"></td><td id="description">A comma-separated list of known Kafka Brokers in the format &lt;host&gt;:&lt;port&gt;<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Security Protocol</strong></td><td id="default-value">PLAINTEXT</td><td id="allowable-values"><ul><li>PLAINTEXT <img src="../../../../../html/images/iconInfo.png" alt="PLAINTEXT" title="P
 LAINTEXT"></img></li><li>SSL <img src="../../../../../html/images/iconInfo.png" alt="SSL" title="SSL"></img></li><li>SASL_PLAINTEXT <img src="../../../../../html/images/iconInfo.png" alt="SASL_PLAINTEXT" title="SASL_PLAINTEXT"></img></li><li>SASL_SSL <img src="../../../../../html/images/iconInfo.png" alt="SASL_SSL" title="SASL_SSL"></img></li></ul></td><td id="description">Protocol used to communicate with brokers. Corresponds to Kafka's 'security.protocol' property.</td></tr><tr><td id="name">Kerberos Service Name</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The Kerberos principal name that Kafka runs as. This can be defined either in Kafka's JAAS config or in Kafka's config. Corresponds to Kafka's 'security.protocol' property.It is ignored unless one of the SASL options of the &lt;Security Protocol&gt; are selected.</td></tr><tr><td id="name">Kerberos Principal</td><td id="default-value"></td><td id="allowable-values"></td><td id="description
 ">The Kerberos principal that will be used to connect to brokers. If not set, it is expected to set a JAAS configuration file in the JVM properties defined in the bootstrap.conf file. This principal will be set into 'sasl.jaas.config' Kafka's property.</td></tr><tr><td id="name">Kerberos Keytab</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The Kerberos keytab that will be used to connect to brokers. If not set, it is expected to set a JAAS configuration file in the JVM properties defined in the bootstrap.conf file. This principal will be set into 'sasl.jaas.config' Kafka's property.</td></tr><tr><td id="name">SSL Context Service</td><td id="default-value"></td><td id="allowable-values"><strong>Controller Service API: </strong><br/>SSLContextService<br/><strong>Implementations: </strong><a href="../../../nifi-ssl-context-service-nar/1.4.0/org.apache.nifi.ssl.StandardSSLContextService/index.html">StandardSSLContextService</a><br/><a href="../../..
 /nifi-ssl-context-service-nar/1.4.0/org.apache.nifi.ssl.StandardRestrictedSSLContextService/index.html">StandardRestrictedSSLContextService</a></td><td id="description">Specifies the SSL Context Service to use for communicating with Kafka.</td></tr><tr><td id="name"><strong>Topic Name(s)</strong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The name of the Kafka Topic(s) to pull from. More than one can be supplied if comma separated.<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Topic Name Format</strong></td><td id="default-value">names</td><td id="allowable-values"><ul><li>names <img src="../../../../../html/images/iconInfo.png" alt="Topic is a full topic name or comma separated list of names" title="Topic is a full topic name or comma separated list of names"></img></li><li>pattern <img src="../../../../../html/images/iconInfo.png" alt="Topic is a regex using the Java Pattern syntax" title="Topic 
 is a regex using the Java Pattern syntax"></img></li></ul></td><td id="description">Specifies whether the Topic(s) provided are a comma separated list of names or a single regular expression</td></tr><tr><td id="name"><strong>Honor Transactions</strong></td><td id="default-value">true</td><td id="allowable-values"><ul><li>true</li><li>false</li></ul></td><td id="description">Specifies whether or not NiFi should honor transactional guarantees when communicating with Kafka. If false, the Processor will use an "isolation level" of read_uncomitted. This means that messages will be received as soon as they are written to Kafka but will be pulled, even if the producer cancels the transactions. If this value is true, NiFi will not receive any messages for which the producer's transaction was canceled, but this can result in some latency since the consumer must wait for the producer to finish its entire transaction instead of pulling as the messages become available.</td></tr><tr><td id="na
 me"><strong>Group ID</strong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">A Group ID is used to identify consumers that are within the same consumer group. Corresponds to Kafka's 'group.id' property.</td></tr><tr><td id="name"><strong>Offset Reset</strong></td><td id="default-value">latest</td><td id="allowable-values"><ul><li>earliest <img src="../../../../../html/images/iconInfo.png" alt="Automatically reset the offset to the earliest offset" title="Automatically reset the offset to the earliest offset"></img></li><li>latest <img src="../../../../../html/images/iconInfo.png" alt="Automatically reset the offset to the latest offset" title="Automatically reset the offset to the latest offset"></img></li><li>none <img src="../../../../../html/images/iconInfo.png" alt="Throw exception to the consumer if no previous offset is found for the consumer's group" title="Throw exception to the consumer if no previous offset is found for the consumer's g
 roup"></img></li></ul></td><td id="description">Allows you to manage the condition when there is no initial offset in Kafka or if the current offset does not exist any more on the server (e.g. because that data has been deleted). Corresponds to Kafka's 'auto.offset.reset' property.</td></tr><tr><td id="name"><strong>Key Attribute Encoding</strong></td><td id="default-value">utf-8</td><td id="allowable-values"><ul><li>UTF-8 Encoded <img src="../../../../../html/images/iconInfo.png" alt="The key is interpreted as a UTF-8 Encoded string." title="The key is interpreted as a UTF-8 Encoded string."></img></li><li>Hex Encoded <img src="../../../../../html/images/iconInfo.png" alt="The key is interpreted as arbitrary binary data and is encoded using hexadecimal characters with uppercase letters" title="The key is interpreted as arbitrary binary data and is encoded using hexadecimal characters with uppercase letters"></img></li></ul></td><td id="description">FlowFiles that are emitted have a
 n attribute named 'kafka.key'. This property dictates how the value of the attribute should be encoded.</td></tr><tr><td id="name">Message Demarcator</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Since KafkaConsumer receives messages in batches, you have an option to output FlowFiles which contains all Kafka messages in a single batch for a given topic and partition and this property allows you to provide a string (interpreted as UTF-8) to use for demarcating apart multiple Kafka messages. This is an optional property and if not provided each Kafka message received will result in a single FlowFile which  time it is triggered. To enter special character such as 'new line' use CTRL+Enter or Shift+Enter depending on the OS<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Message Header Encoding</td><td id="default-value">UTF-8</td><td id="allowable-values"></td><td id="description">Any message header that is found 
 on a Kafka message will be added to the outbound FlowFile as an attribute. This property indicates the Character Encoding to use for deserializing the headers.</td></tr><tr><td id="name">Headers to Add as Attributes (Regex)</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">A Regular Expression that is matched against all message headers. Any message header whose name matches the regex will be added to the FlowFile as an Attribute. If not specified, no Header values will be added as FlowFile attributes. If two messages have a different value for the same header and that header is selected by the provided regex, then those two messages must be added to different FlowFiles. As a result, users should be cautious about using a regex like ".*" if messages are expected to have header values that are unique per message, such as an identifier or timestamp, because it will prevent NiFi from bundling the messages together efficiently.</td></tr><tr><td id="name
 ">Max Poll Records</td><td id="default-value">10000</td><td id="allowable-values"></td><td id="description">Specifies the maximum number of records Kafka should return in a single poll.</td></tr><tr><td id="name">Max Uncommitted Time</td><td id="default-value">1 secs</td><td id="allowable-values"></td><td id="description">Specifies the maximum amount of time allowed to pass before offsets must be committed. This value impacts how often offsets will be committed.  Committing offsets less often increases throughput but also increases the window of potential data duplication in the event of a rebalance or JVM restart between commits.  This value is also related to maximum poll records and the use of a message demarcator.  When using a message demarcator we can have far more uncommitted messages than when we're not as there is much less for us to keep track of in memory.</td></tr></table><h3>Dynamic Properties: </h3><p>Dynamic Properties allow the user to specify both the name and value
  of a property.<table id="dynamic-properties"><tr><th>Name</th><th>Value</th><th>Description</th></tr><tr><td id="name">The name of a Kafka configuration property.</td><td id="value">The value of a given Kafka configuration property.</td><td>These properties will be added on the Kafka configuration after loading any provided configuration properties. In the event a dynamic property represents a property that was already set, its value will be ignored and WARN message logged. For the list of available Kafka properties please refer to: http://kafka.apache.org/documentation.html#configuration. </td></tr></table></p><h3>Relationships: </h3><table id="relationships"><tr><th>Name</th><th>Description</th></tr><tr><td>success</td><td>FlowFiles received from Kafka. Depending on demarcation strategy it is a flow file per message or a bundle of messages grouped by topic and partition.</td></tr></table><h3>Reads Attributes: </h3>None specified.<h3>Writes Attributes: </h3><table id="writes-attri
 butes"><tr><th>Name</th><th>Description</th></tr><tr><td>kafka.count</td><td>The number of messages written if more than one</td></tr><tr><td>kafka.key</td><td>The key of message if present and if single message. How the key is encoded depends on the value of the 'Key Attribute Encoding' property.</td></tr><tr><td>kafka.offset</td><td>The offset of the message in the partition of the topic.</td></tr><tr><td>kafka.partition</td><td>The partition of the topic the message or message bundle is from</td></tr><tr><td>kafka.topic</td><td>The topic the message or message bundle is from</td></tr></table><h3>State management: </h3>This component does not store state.<h3>Restricted: </h3>This component is not restricted.<h3>Input requirement: </h3>This component does not allow an incoming relationship.</body></html>
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Added: nifi/site/trunk/docs/nifi-docs/components/org.apache.nifi/nifi-kafka-0-11-nar/1.4.0/org.apache.nifi.processors.kafka.pubsub.PublishKafkaRecord_0_11/index.html
URL: http://svn.apache.org/viewvc/nifi/site/trunk/docs/nifi-docs/components/org.apache.nifi/nifi-kafka-0-11-nar/1.4.0/org.apache.nifi.processors.kafka.pubsub.PublishKafkaRecord_0_11/index.html?rev=1811008&view=auto
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--- nifi/site/trunk/docs/nifi-docs/components/org.apache.nifi/nifi-kafka-0-11-nar/1.4.0/org.apache.nifi.processors.kafka.pubsub.PublishKafkaRecord_0_11/index.html (added)
+++ nifi/site/trunk/docs/nifi-docs/components/org.apache.nifi/nifi-kafka-0-11-nar/1.4.0/org.apache.nifi.processors.kafka.pubsub.PublishKafkaRecord_0_11/index.html Tue Oct  3 13:30:16 2017
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+<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>PublishKafkaRecord_0_11</title><link rel="stylesheet" href="../../../../../css/component-usage.css" type="text/css"></link></head><script type="text/javascript">window.onload = function(){if(self==top) { document.getElementById('nameHeader').style.display = "inherit"; } }</script><body><h1 id="nameHeader" style="display: none;">PublishKafkaRecord_0_11</h1><h2>Description: </h2><p>Sends the contents of a FlowFile as individual records to Apache Kafka using the Kafka 0.11.x Producer API. The contents of the FlowFile are expected to be record-oriented data that can be read by the configured Record Reader.  Please note there are cases where the publisher can get into an indefinite stuck state.  We are closely monitoring how this evolves in the Kafka community and will take advantage of those fixes as soon as we can.  In the meantime it is possible to enter states where the only resolution will be to restart the JVM
  NiFi runs on. The complementary NiFi processor for fetching messages is ConsumeKafka_0_11_Record.</p><h3>Tags: </h3><p>Apache, Kafka, Record, csv, json, avro, logs, Put, Send, Message, PubSub, 0.11.x</p><h3>Properties: </h3><p>In the list below, the names of required properties appear in <strong>bold</strong>. Any other properties (not in bold) are considered optional. The table also indicates any default values, and whether a property supports the <a href="../../../../../html/expression-language-guide.html">NiFi Expression Language</a>.</p><table id="properties"><tr><th>Name</th><th>Default Value</th><th>Allowable Values</th><th>Description</th></tr><tr><td id="name"><strong>Kafka Brokers</strong></td><td id="default-value">localhost:9092</td><td id="allowable-values"></td><td id="description">A comma-separated list of known Kafka Brokers in the format &lt;host&gt;:&lt;port&gt;<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Topic Name</s
 trong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The name of the Kafka Topic to publish to.<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Record Reader</strong></td><td id="default-value"></td><td id="allowable-values"><strong>Controller Service API: </strong><br/>RecordReaderFactory<br/><strong>Implementations: </strong><a href="../../../nifi-record-serialization-services-nar/1.4.0/org.apache.nifi.csv.CSVReader/index.html">CSVReader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.4.0/org.apache.nifi.grok.GrokReader/index.html">GrokReader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.4.0/org.apache.nifi.avro.AvroReader/index.html">AvroReader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.4.0/org.apache.nifi.json.JsonTreeReader/index.html">JsonTreeReader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.4.0/org.apache.nifi
 .json.JsonPathReader/index.html">JsonPathReader</a><br/><a href="../../../nifi-scripting-nar/1.4.0/org.apache.nifi.record.script.ScriptedReader/index.html">ScriptedReader</a></td><td id="description">The Record Reader to use for incoming FlowFiles</td></tr><tr><td id="name"><strong>Record Writer</strong></td><td id="default-value"></td><td id="allowable-values"><strong>Controller Service API: </strong><br/>RecordSetWriterFactory<br/><strong>Implementations: </strong><a href="../../../nifi-record-serialization-services-nar/1.4.0/org.apache.nifi.json.JsonRecordSetWriter/index.html">JsonRecordSetWriter</a><br/><a href="../../../nifi-record-serialization-services-nar/1.4.0/org.apache.nifi.text.FreeFormTextRecordSetWriter/index.html">FreeFormTextRecordSetWriter</a><br/><a href="../../../nifi-record-serialization-services-nar/1.4.0/org.apache.nifi.avro.AvroRecordSetWriter/index.html">AvroRecordSetWriter</a><br/><a href="../../../nifi-scripting-nar/1.4.0/org.apache.nifi.record.script.Scrip
 tedRecordSetWriter/index.html">ScriptedRecordSetWriter</a><br/><a href="../../../nifi-record-serialization-services-nar/1.4.0/org.apache.nifi.csv.CSVRecordSetWriter/index.html">CSVRecordSetWriter</a></td><td id="description">The Record Writer to use in order to serialize the data before sending to Kafka</td></tr><tr><td id="name"><strong>Use Transactions</strong></td><td id="default-value">true</td><td id="allowable-values"><ul><li>true</li><li>false</li></ul></td><td id="description">Specifies whether or not NiFi should provide Transactional guarantees when communicating with Kafka. If there is a problem sending data to Kafka, and this property is set to false, then the messages that have already been sent to Kafka will continue on and be delivered to consumers. If this is set to true, then the Kafka transaction will be rolled back so that those messages are not available to consumers. Setting this to true requires that the &lt;Delivery Guarantee&gt; property be set to "Guarantee R
 eplicated Delivery."</td></tr><tr><td id="name"><strong>Delivery Guarantee</strong></td><td id="default-value">0</td><td id="allowable-values"><ul><li>Best Effort <img src="../../../../../html/images/iconInfo.png" alt="FlowFile will be routed to success after successfully writing the content to a Kafka node, without waiting for a response. This provides the best performance but may result in data loss." title="FlowFile will be routed to success after successfully writing the content to a Kafka node, without waiting for a response. This provides the best performance but may result in data loss."></img></li><li>Guarantee Single Node Delivery <img src="../../../../../html/images/iconInfo.png" alt="FlowFile will be routed to success if the message is received by a single Kafka node, whether or not it is replicated. This is faster than &lt;Guarantee Replicated Delivery&gt; but can result in data loss if a Kafka node crashes" title="FlowFile will be routed to success if the message is rec
 eived by a single Kafka node, whether or not it is replicated. This is faster than &lt;Guarantee Replicated Delivery&gt; but can result in data loss if a Kafka node crashes"></img></li><li>Guarantee Replicated Delivery <img src="../../../../../html/images/iconInfo.png" alt="FlowFile will be routed to failure unless the message is replicated to the appropriate number of Kafka Nodes according to the Topic configuration" title="FlowFile will be routed to failure unless the message is replicated to the appropriate number of Kafka Nodes according to the Topic configuration"></img></li></ul></td><td id="description">Specifies the requirement for guaranteeing that a message is sent to Kafka. Corresponds to Kafka's 'acks' property.</td></tr><tr><td id="name">Attributes to Send as Headers (Regex)</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">A Regular Expression that is matched against all FlowFile attribute names. Any attribute whose name matches the re
 gex will be added to the Kafka messages as a Header. If not specified, no FlowFile attributes will be added as headers.</td></tr><tr><td id="name">Message Header Encoding</td><td id="default-value">UTF-8</td><td id="allowable-values"></td><td id="description">For any attribute that is added as a message header, as configured via the &lt;Attributes to Send as Headers&gt; property, this property indicates the Character Encoding to use for serializing the headers.</td></tr><tr><td id="name"><strong>Security Protocol</strong></td><td id="default-value">PLAINTEXT</td><td id="allowable-values"><ul><li>PLAINTEXT <img src="../../../../../html/images/iconInfo.png" alt="PLAINTEXT" title="PLAINTEXT"></img></li><li>SSL <img src="../../../../../html/images/iconInfo.png" alt="SSL" title="SSL"></img></li><li>SASL_PLAINTEXT <img src="../../../../../html/images/iconInfo.png" alt="SASL_PLAINTEXT" title="SASL_PLAINTEXT"></img></li><li>SASL_SSL <img src="../../../../../html/images/iconInfo.png" alt="SA
 SL_SSL" title="SASL_SSL"></img></li></ul></td><td id="description">Protocol used to communicate with brokers. Corresponds to Kafka's 'security.protocol' property.</td></tr><tr><td id="name">Kerberos Service Name</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The Kerberos principal name that Kafka runs as. This can be defined either in Kafka's JAAS config or in Kafka's config. Corresponds to Kafka's 'security.protocol' property.It is ignored unless one of the SASL options of the &lt;Security Protocol&gt; are selected.</td></tr><tr><td id="name">Kerberos Principal</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The Kerberos principal that will be used to connect to brokers. If not set, it is expected to set a JAAS configuration file in the JVM properties defined in the bootstrap.conf file. This principal will be set into 'sasl.jaas.config' Kafka's property.</td></tr><tr><td id="name">Kerberos Keytab</td><td id="d
 efault-value"></td><td id="allowable-values"></td><td id="description">The Kerberos keytab that will be used to connect to brokers. If not set, it is expected to set a JAAS configuration file in the JVM properties defined in the bootstrap.conf file. This principal will be set into 'sasl.jaas.config' Kafka's property.</td></tr><tr><td id="name">SSL Context Service</td><td id="default-value"></td><td id="allowable-values"><strong>Controller Service API: </strong><br/>SSLContextService<br/><strong>Implementations: </strong><a href="../../../nifi-ssl-context-service-nar/1.4.0/org.apache.nifi.ssl.StandardSSLContextService/index.html">StandardSSLContextService</a><br/><a href="../../../nifi-ssl-context-service-nar/1.4.0/org.apache.nifi.ssl.StandardRestrictedSSLContextService/index.html">StandardRestrictedSSLContextService</a></td><td id="description">Specifies the SSL Context Service to use for communicating with Kafka.</td></tr><tr><td id="name">Message Key Field</td><td id="default-valu
 e"></td><td id="allowable-values"></td><td id="description">The name of a field in the Input Records that should be used as the Key for the Kafka message.<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Max Request Size</strong></td><td id="default-value">1 MB</td><td id="allowable-values"></td><td id="description">The maximum size of a request in bytes. Corresponds to Kafka's 'max.request.size' property and defaults to 1 MB (1048576).</td></tr><tr><td id="name"><strong>Acknowledgment Wait Time</strong></td><td id="default-value">5 secs</td><td id="allowable-values"></td><td id="description">After sending a message to Kafka, this indicates the amount of time that we are willing to wait for a response from Kafka. If Kafka does not acknowledge the message within this time period, the FlowFile will be routed to 'failure'.</td></tr><tr><td id="name"><strong>Max Metadata Wait Time</strong></td><td id="default-value">5 sec</td><td id="allowable-v
 alues"></td><td id="description">The amount of time publisher will wait to obtain metadata or wait for the buffer to flush during the 'send' call before failing the entire 'send' call. Corresponds to Kafka's 'max.block.ms' property<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Partitioner class</td><td id="default-value">org.apache.kafka.clients.producer.internals.DefaultPartitioner</td><td id="allowable-values"><ul><li>RoundRobinPartitioner <img src="../../../../../html/images/iconInfo.png" alt="Messages will be assigned partitions in a round-robin fashion, sending the first message to Partition 1, the next Partition to Partition 2, and so on, wrapping as necessary." title="Messages will be assigned partitions in a round-robin fashion, sending the first message to Partition 1, the next Partition to Partition 2, and so on, wrapping as necessary."></img></li><li>DefaultPartitioner <img src="../../../../../html/images/iconInfo.png" alt="Messages wi
 ll be assigned to random partitions." title="Messages will be assigned to random partitions."></img></li></ul></td><td id="description">Specifies which class to use to compute a partition id for a message. Corresponds to Kafka's 'partitioner.class' property.</td></tr><tr><td id="name"><strong>Compression Type</strong></td><td id="default-value">none</td><td id="allowable-values"><ul><li>none</li><li>gzip</li><li>snappy</li><li>lz4</li></ul></td><td id="description">This parameter allows you to specify the compression codec for all data generated by this producer.</td></tr></table><h3>Dynamic Properties: </h3><p>Dynamic Properties allow the user to specify both the name and value of a property.<table id="dynamic-properties"><tr><th>Name</th><th>Value</th><th>Description</th></tr><tr><td id="name">The name of a Kafka configuration property.</td><td id="value">The value of a given Kafka configuration property.</td><td>These properties will be added on the Kafka configuration after load
 ing any provided configuration properties. In the event a dynamic property represents a property that was already set, its value will be ignored and WARN message logged. For the list of available Kafka properties please refer to: http://kafka.apache.org/documentation.html#configuration. </td></tr></table></p><h3>Relationships: </h3><table id="relationships"><tr><th>Name</th><th>Description</th></tr><tr><td>success</td><td>FlowFiles for which all content was sent to Kafka.</td></tr><tr><td>failure</td><td>Any FlowFile that cannot be sent to Kafka will be routed to this Relationship</td></tr></table><h3>Reads Attributes: </h3>None specified.<h3>Writes Attributes: </h3><table id="writes-attributes"><tr><th>Name</th><th>Description</th></tr><tr><td>msg.count</td><td>The number of messages that were sent to Kafka for this FlowFile. This attribute is added only to FlowFiles that are routed to success.</td></tr></table><h3>State management: </h3>This component does not store state.<h3>Rest
 ricted: </h3>This component is not restricted.<h3>Input requirement: </h3>This component requires an incoming relationship.<h3>See Also:</h3><p><a href="../org.apache.nifi.processors.kafka.pubsub.PublishKafka_0_11/index.html">PublishKafka_0_11</a>, <a href="../org.apache.nifi.processors.kafka.pubsub.ConsumeKafka_0_11/index.html">ConsumeKafka_0_11</a>, <a href="../org.apache.nifi.processors.kafka.pubsub.ConsumeKafkaRecord_0_11/index.html">ConsumeKafkaRecord_0_11</a></p></body></html>
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+<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>PublishKafka_0_11</title><link rel="stylesheet" href="../../../../../css/component-usage.css" type="text/css"></link></head><script type="text/javascript">window.onload = function(){if(self==top) { document.getElementById('nameHeader').style.display = "inherit"; } }</script><body><h1 id="nameHeader" style="display: none;">PublishKafka_0_11</h1><h2>Description: </h2><p>Sends the contents of a FlowFile as a message to Apache Kafka using the Kafka 0.11.x Producer API.The messages to send may be individual FlowFiles or may be delimited, using a user-specified delimiter, such as a new-line.  Please note there are cases where the publisher can get into an indefinite stuck state.  We are closely monitoring how this evolves in the Kafka community and will take advantage of those fixes as soon as we can.  In the meantime it is possible to enter states where the only resolution will be to restart the JVM NiFi runs on. Th
 e complementary NiFi processor for fetching messages is ConsumeKafka_0_11.</p><h3>Tags: </h3><p>Apache, Kafka, Put, Send, Message, PubSub, 0.11.x</p><h3>Properties: </h3><p>In the list below, the names of required properties appear in <strong>bold</strong>. Any other properties (not in bold) are considered optional. The table also indicates any default values, and whether a property supports the <a href="../../../../../html/expression-language-guide.html">NiFi Expression Language</a>.</p><table id="properties"><tr><th>Name</th><th>Default Value</th><th>Allowable Values</th><th>Description</th></tr><tr><td id="name"><strong>Kafka Brokers</strong></td><td id="default-value">localhost:9092</td><td id="allowable-values"></td><td id="description">A comma-separated list of known Kafka Brokers in the format &lt;host&gt;:&lt;port&gt;<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Security Protocol</strong></td><td id="default-value">PLAINTEXT</td>
 <td id="allowable-values"><ul><li>PLAINTEXT <img src="../../../../../html/images/iconInfo.png" alt="PLAINTEXT" title="PLAINTEXT"></img></li><li>SSL <img src="../../../../../html/images/iconInfo.png" alt="SSL" title="SSL"></img></li><li>SASL_PLAINTEXT <img src="../../../../../html/images/iconInfo.png" alt="SASL_PLAINTEXT" title="SASL_PLAINTEXT"></img></li><li>SASL_SSL <img src="../../../../../html/images/iconInfo.png" alt="SASL_SSL" title="SASL_SSL"></img></li></ul></td><td id="description">Protocol used to communicate with brokers. Corresponds to Kafka's 'security.protocol' property.</td></tr><tr><td id="name">Kerberos Service Name</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The Kerberos principal name that Kafka runs as. This can be defined either in Kafka's JAAS config or in Kafka's config. Corresponds to Kafka's 'security.protocol' property.It is ignored unless one of the SASL options of the &lt;Security Protocol&gt; are selected.</td></tr>
 <tr><td id="name">Kerberos Principal</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The Kerberos principal that will be used to connect to brokers. If not set, it is expected to set a JAAS configuration file in the JVM properties defined in the bootstrap.conf file. This principal will be set into 'sasl.jaas.config' Kafka's property.</td></tr><tr><td id="name">Kerberos Keytab</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The Kerberos keytab that will be used to connect to brokers. If not set, it is expected to set a JAAS configuration file in the JVM properties defined in the bootstrap.conf file. This principal will be set into 'sasl.jaas.config' Kafka's property.</td></tr><tr><td id="name">SSL Context Service</td><td id="default-value"></td><td id="allowable-values"><strong>Controller Service API: </strong><br/>SSLContextService<br/><strong>Implementations: </strong><a href="../../../nifi-ssl-context-service-
 nar/1.4.0/org.apache.nifi.ssl.StandardSSLContextService/index.html">StandardSSLContextService</a><br/><a href="../../../nifi-ssl-context-service-nar/1.4.0/org.apache.nifi.ssl.StandardRestrictedSSLContextService/index.html">StandardRestrictedSSLContextService</a></td><td id="description">Specifies the SSL Context Service to use for communicating with Kafka.</td></tr><tr><td id="name"><strong>Topic Name</strong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The name of the Kafka Topic to publish to.<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Delivery Guarantee</strong></td><td id="default-value">0</td><td id="allowable-values"><ul><li>Best Effort <img src="../../../../../html/images/iconInfo.png" alt="FlowFile will be routed to success after successfully writing the content to a Kafka node, without waiting for a response. This provides the best performance but may result in data loss." title="FlowFil
 e will be routed to success after successfully writing the content to a Kafka node, without waiting for a response. This provides the best performance but may result in data loss."></img></li><li>Guarantee Single Node Delivery <img src="../../../../../html/images/iconInfo.png" alt="FlowFile will be routed to success if the message is received by a single Kafka node, whether or not it is replicated. This is faster than &lt;Guarantee Replicated Delivery&gt; but can result in data loss if a Kafka node crashes" title="FlowFile will be routed to success if the message is received by a single Kafka node, whether or not it is replicated. This is faster than &lt;Guarantee Replicated Delivery&gt; but can result in data loss if a Kafka node crashes"></img></li><li>Guarantee Replicated Delivery <img src="../../../../../html/images/iconInfo.png" alt="FlowFile will be routed to failure unless the message is replicated to the appropriate number of Kafka Nodes according to the Topic configuration"
  title="FlowFile will be routed to failure unless the message is replicated to the appropriate number of Kafka Nodes according to the Topic configuration"></img></li></ul></td><td id="description">Specifies the requirement for guaranteeing that a message is sent to Kafka. Corresponds to Kafka's 'acks' property.</td></tr><tr><td id="name"><strong>Use Transactions</strong></td><td id="default-value">true</td><td id="allowable-values"><ul><li>true</li><li>false</li></ul></td><td id="description">Specifies whether or not NiFi should provide Transactional guarantees when communicating with Kafka. If there is a problem sending data to Kafka, and this property is set to false, then the messages that have already been sent to Kafka will continue on and be delivered to consumers. If this is set to true, then the Kafka transaction will be rolled back so that those messages are not available to consumers. Setting this to true requires that the &lt;Delivery Guarantee&gt; property be set to "Gua
 rantee Replicated Delivery."</td></tr><tr><td id="name">Attributes to Send as Headers (Regex)</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">A Regular Expression that is matched against all FlowFile attribute names. Any attribute whose name matches the regex will be added to the Kafka messages as a Header. If not specified, no FlowFile attributes will be added as headers.</td></tr><tr><td id="name">Message Header Encoding</td><td id="default-value">UTF-8</td><td id="allowable-values"></td><td id="description">For any attribute that is added as a message header, as configured via the &lt;Attributes to Send as Headers&gt; property, this property indicates the Character Encoding to use for serializing the headers.</td></tr><tr><td id="name">Kafka Key</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The Key to use for the Message. If not specified, the flow file attribute 'kafka.key' is used as the message key, if i
 t is present and we're not demarcating.<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Key Attribute Encoding</strong></td><td id="default-value">utf-8</td><td id="allowable-values"><ul><li>UTF-8 Encoded <img src="../../../../../html/images/iconInfo.png" alt="The key is interpreted as a UTF-8 Encoded string." title="The key is interpreted as a UTF-8 Encoded string."></img></li><li>Hex Encoded <img src="../../../../../html/images/iconInfo.png" alt="The key is interpreted as arbitrary binary data that is encoded using hexadecimal characters with uppercase letters." title="The key is interpreted as arbitrary binary data that is encoded using hexadecimal characters with uppercase letters."></img></li></ul></td><td id="description">FlowFiles that are emitted have an attribute named 'kafka.key'. This property dictates how the value of the attribute should be encoded.</td></tr><tr><td id="name">Message Demarcator</td><td id="default-value"></td><
 td id="allowable-values"></td><td id="description">Specifies the string (interpreted as UTF-8) to use for demarcating multiple messages within a single FlowFile. If not specified, the entire content of the FlowFile will be used as a single message. If specified, the contents of the FlowFile will be split on this delimiter and each section sent as a separate Kafka message. To enter special character such as 'new line' use CTRL+Enter or Shift+Enter, depending on your OS.<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Max Request Size</strong></td><td id="default-value">1 MB</td><td id="allowable-values"></td><td id="description">The maximum size of a request in bytes. Corresponds to Kafka's 'max.request.size' property and defaults to 1 MB (1048576).</td></tr><tr><td id="name"><strong>Acknowledgment Wait Time</strong></td><td id="default-value">5 secs</td><td id="allowable-values"></td><td id="description">After sending a message to Kafka, th
 is indicates the amount of time that we are willing to wait for a response from Kafka. If Kafka does not acknowledge the message within this time period, the FlowFile will be routed to 'failure'.</td></tr><tr><td id="name"><strong>Max Metadata Wait Time</strong></td><td id="default-value">5 sec</td><td id="allowable-values"></td><td id="description">The amount of time publisher will wait to obtain metadata or wait for the buffer to flush during the 'send' call before failing the entire 'send' call. Corresponds to Kafka's 'max.block.ms' property<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Partitioner class</td><td id="default-value">org.apache.kafka.clients.producer.internals.DefaultPartitioner</td><td id="allowable-values"><ul><li>RoundRobinPartitioner <img src="../../../../../html/images/iconInfo.png" alt="Messages will be assigned partitions in a round-robin fashion, sending the first message to Partition 1, the next Partition to Partition 2,
  and so on, wrapping as necessary." title="Messages will be assigned partitions in a round-robin fashion, sending the first message to Partition 1, the next Partition to Partition 2, and so on, wrapping as necessary."></img></li><li>DefaultPartitioner <img src="../../../../../html/images/iconInfo.png" alt="Messages will be assigned to random partitions." title="Messages will be assigned to random partitions."></img></li></ul></td><td id="description">Specifies which class to use to compute a partition id for a message. Corresponds to Kafka's 'partitioner.class' property.</td></tr><tr><td id="name"><strong>Compression Type</strong></td><td id="default-value">none</td><td id="allowable-values"><ul><li>none</li><li>gzip</li><li>snappy</li><li>lz4</li></ul></td><td id="description">This parameter allows you to specify the compression codec for all data generated by this producer.</td></tr></table><h3>Dynamic Properties: </h3><p>Dynamic Properties allow the user to specify both the name 
 and value of a property.<table id="dynamic-properties"><tr><th>Name</th><th>Value</th><th>Description</th></tr><tr><td id="name">The name of a Kafka configuration property.</td><td id="value">The value of a given Kafka configuration property.</td><td>These properties will be added on the Kafka configuration after loading any provided configuration properties. In the event a dynamic property represents a property that was already set, its value will be ignored and WARN message logged. For the list of available Kafka properties please refer to: http://kafka.apache.org/documentation.html#configuration. </td></tr></table></p><h3>Relationships: </h3><table id="relationships"><tr><th>Name</th><th>Description</th></tr><tr><td>success</td><td>FlowFiles for which all content was sent to Kafka.</td></tr><tr><td>failure</td><td>Any FlowFile that cannot be sent to Kafka will be routed to this Relationship</td></tr></table><h3>Reads Attributes: </h3>None specified.<h3>Writes Attributes: </h3><ta
 ble id="writes-attributes"><tr><th>Name</th><th>Description</th></tr><tr><td>msg.count</td><td>The number of messages that were sent to Kafka for this FlowFile. This attribute is added only to FlowFiles that are routed to success. If the &lt;Message Demarcator&gt; Property is not set, this will always be 1, but if the Property is set, it may be greater than 1.</td></tr></table><h3>State management: </h3>This component does not store state.<h3>Restricted: </h3>This component is not restricted.<h3>Input requirement: </h3>This component requires an incoming relationship.</body></html>
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+<!DOCTYPE html>
+<html lang="en">
+    <!--
+      Licensed to the Apache Software Foundation (ASF) under one or more
+      contributor license agreements.  See the NOTICE file distributed with
+      this work for additional information regarding copyright ownership.
+      The ASF licenses this file to You under the Apache License, Version 2.0
+      (the "License"); you may not use this file except in compliance with
+      the License.  You may obtain a copy of the License at
+          http://www.apache.org/licenses/LICENSE-2.0
+      Unless required by applicable law or agreed to in writing, software
+      distributed under the License is distributed on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+      See the License for the specific language governing permissions and
+      limitations under the License.
+    -->
+    <head>
+        <meta charset="utf-8" />
+        <title>GetKafka</title>
+        <link rel="stylesheet" href="../../../../../css/component-usage.css" type="text/css" />
+    </head>
+
+    <body>
+        <!-- Processor Documentation ================================================== -->
+        <h2>Description:</h2>
+        <p>
+            This Processors polls <a href="http://kafka.apache.org/">Apache Kafka</a>
+            for data. When a message is received from Kafka, this Processor emits a FlowFile
+            where the content of the FlowFile is the value of the Kafka message. If the
+            message has a key associated with it, an attribute named <code>kafka.key</code>
+            will be added to the FlowFile, with the value being the UTF-8 Encoded value
+            of the Message's Key.
+        </p>
+        <p>
+            Kafka supports the notion of a Consumer Group when pulling messages in order to
+            provide scalability while still offering a publish-subscribe interface. Each
+            Consumer Group must have a unique identifier. The Consumer Group identifier that
+            is used by NiFi is the UUID of the Processor. This means that all of the nodes
+            within a cluster will use the same Consumer Group Identifier so that they do
+            not receive duplicate data but multiple GetKafka Processors can be used to pull
+            from multiple Topics, as each Processor will receive a different Processor UUID 
+            and therefore a different Consumer Group Identifier.
+        </p>
+    </body>
+</html>

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+<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>GetKafka</title><link rel="stylesheet" href="../../../../../css/component-usage.css" type="text/css"></link></head><script type="text/javascript">window.onload = function(){if(self==top) { document.getElementById('nameHeader').style.display = "inherit"; } }</script><body><h1 id="nameHeader" style="display: none;">GetKafka</h1><h2>Description: </h2><p>Fetches messages from Apache Kafka, specifically for 0.8.x versions. The complementary NiFi processor for sending messages is PutKafka.</p><p><a href="additionalDetails.html">Additional Details...</a></p><h3>Tags: </h3><p>Kafka, Apache, Get, Ingest, Ingress, Topic, PubSub, 0.8.x</p><h3>Properties: </h3><p>In the list below, the names of required properties appear in <strong>bold</strong>. Any other properties (not in bold) are considered optional. The table also indicates any default values, and whether a property supports the <a href="../../../../../html/expressio
 n-language-guide.html">NiFi Expression Language</a>.</p><table id="properties"><tr><th>Name</th><th>Default Value</th><th>Allowable Values</th><th>Description</th></tr><tr><td id="name"><strong>ZooKeeper Connection String</strong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The Connection String to use in order to connect to ZooKeeper. This is often a comma-separated list of &lt;host&gt;:&lt;port&gt; combinations. For example, host1:2181,host2:2181,host3:2188<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Topic Name</strong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The Kafka Topic to pull messages from<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Zookeeper Commit Frequency</strong></td><td id="default-value">60 secs</td><td id="allowable-values"></td><td id="description">Specifies how often to communicate with Zo
 oKeeper to indicate which messages have been pulled. A longer time period will result in better overall performance but can result in more data duplication if a NiFi node is lost</td></tr><tr><td id="name"><strong>Batch Size</strong></td><td id="default-value">1</td><td id="allowable-values"></td><td id="description">Specifies the maximum number of messages to combine into a single FlowFile. These messages will be concatenated together with the &lt;Message Demarcator&gt; string placed between the content of each message. If the messages from Kafka should not be concatenated together, leave this value at 1.</td></tr><tr><td id="name"><strong>Message Demarcator</strong></td><td id="default-value">\n</td><td id="allowable-values"></td><td id="description">Specifies the characters to use in order to demarcate multiple messages from Kafka. If the &lt;Batch Size&gt; property is set to 1, this value is ignored. Otherwise, for each two subsequent messages in the batch, this value will be pl
 aced in between them.</td></tr><tr><td id="name"><strong>Client Name</strong></td><td id="default-value">NiFi-mock-processor</td><td id="allowable-values"></td><td id="description">Client Name to use when communicating with Kafka</td></tr><tr><td id="name"><strong>Group ID</strong></td><td id="default-value">mock-processor</td><td id="allowable-values"></td><td id="description">A Group ID is used to identify consumers that are within the same consumer group<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Kafka Communications Timeout</strong></td><td id="default-value">30 secs</td><td id="allowable-values"></td><td id="description">The amount of time to wait for a response from Kafka before determining that there is a communications error</td></tr><tr><td id="name"><strong>ZooKeeper Communications Timeout</strong></td><td id="default-value">30 secs</td><td id="allowable-values"></td><td id="description">The amount of time to wait for a respo
 nse from ZooKeeper before determining that there is a communications error</td></tr><tr><td id="name"><strong>Auto Offset Reset</strong></td><td id="default-value">largest</td><td id="allowable-values"><ul><li>smallest</li><li>largest</li></ul></td><td id="description">Automatically reset the offset to the smallest or largest offset available on the broker</td></tr></table><h3>Dynamic Properties: </h3><p>Dynamic Properties allow the user to specify both the name and value of a property.<table id="dynamic-properties"><tr><th>Name</th><th>Value</th><th>Description</th></tr><tr><td id="name">The name of a Kafka configuration property.</td><td id="value">The value of a given Kafka configuration property.</td><td>These properties will be added on the Kafka configuration after loading any provided configuration properties. In the event a dynamic property represents a property that was already set as part of the static properties, its value wil be overridden with warning message describing
  the override. For the list of available Kafka properties please refer to: http://kafka.apache.org/documentation.html#configuration.</td></tr></table></p><h3>Relationships: </h3><table id="relationships"><tr><th>Name</th><th>Description</th></tr><tr><td>success</td><td>All FlowFiles that are created are routed to this relationship</td></tr></table><h3>Reads Attributes: </h3>None specified.<h3>Writes Attributes: </h3><table id="writes-attributes"><tr><th>Name</th><th>Description</th></tr><tr><td>kafka.topic</td><td>The name of the Kafka Topic from which the message was received</td></tr><tr><td>kafka.key</td><td>The key of the Kafka message, if it exists and batch size is 1. If the message does not have a key, or if the batch size is greater than 1, this attribute will not be added</td></tr><tr><td>kafka.partition</td><td>The partition of the Kafka Topic from which the message was received. This attribute is added only if the batch size is 1</td></tr><tr><td>kafka.offset</td><td>The 
 offset of the message within the Kafka partition. This attribute is added only if the batch size is 1</td></tr></table><h3>State management: </h3>This component does not store state.<h3>Restricted: </h3>This component is not restricted.<h3>Input requirement: </h3>This component does not allow an incoming relationship.</body></html>
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+<!DOCTYPE html>
+<html lang="en">
+    <!--
+      Licensed to the Apache Software Foundation (ASF) under one or more
+      contributor license agreements.  See the NOTICE file distributed with
+      this work for additional information regarding copyright ownership.
+      The ASF licenses this file to You under the Apache License, Version 2.0
+      (the "License"); you may not use this file except in compliance with
+      the License.  You may obtain a copy of the License at
+          http://www.apache.org/licenses/LICENSE-2.0
+      Unless required by applicable law or agreed to in writing, software
+      distributed under the License is distributed on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+      See the License for the specific language governing permissions and
+      limitations under the License.
+    -->
+    <head>
+        <meta charset="utf-8" />
+        <title>PutKafka</title>
+        <link rel="stylesheet" href="../../../../../css/component-usage.css" type="text/css" />
+    </head>
+
+    <body>
+        <!-- Processor Documentation ================================================== -->
+        <h2>Description:</h2>
+        <p>
+            This Processors puts the contents of a FlowFile to a Topic in 
+            <a href="http://kafka.apache.org/">Apache Kafka</a>. The full contents of
+            a FlowFile becomes the contents of a single message in Kafka.
+            This message is optionally assigned a key by using the
+            &lt;Kafka Key&gt; Property.
+        </p>
+
+        <p>
+            The Processor allows the user to configure an optional Message Delimiter that
+            can be used to send many messages per FlowFile. For example, a \n could be used
+            to indicate that the contents of the FlowFile should be used to send one message
+            per line of text. If the property is not set, the entire contents of the FlowFile
+            will be sent as a single message. When using the delimiter, if some messages are
+            successfully sent but other messages fail to send, the FlowFile will be FORKed into
+            two child FlowFiles, with the successfully sent messages being routed to 'success'
+            and the messages that could not be sent going to 'failure'.
+        </p>
+    </body>
+</html>

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+++ nifi/site/trunk/docs/nifi-docs/components/org.apache.nifi/nifi-kafka-0-8-nar/1.4.0/org.apache.nifi.processors.kafka.PutKafka/index.html Tue Oct  3 13:30:16 2017
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+<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>PutKafka</title><link rel="stylesheet" href="../../../../../css/component-usage.css" type="text/css"></link></head><script type="text/javascript">window.onload = function(){if(self==top) { document.getElementById('nameHeader').style.display = "inherit"; } }</script><body><h1 id="nameHeader" style="display: none;">PutKafka</h1><h2>Description: </h2><p>Sends the contents of a FlowFile as a message to Apache Kafka, specifically for 0.8.x versions. The messages to send may be individual FlowFiles or may be delimited, using a user-specified delimiter, such as a new-line. The complementary NiFi processor for fetching messages is GetKafka.</p><p><a href="additionalDetails.html">Additional Details...</a></p><h3>Tags: </h3><p>Apache, Kafka, Put, Send, Message, PubSub, 0.8.x</p><h3>Properties: </h3><p>In the list below, the names of required properties appear in <strong>bold</strong>. Any other properties (not in bold) a
 re considered optional. The table also indicates any default values, and whether a property supports the <a href="../../../../../html/expression-language-guide.html">NiFi Expression Language</a>.</p><table id="properties"><tr><th>Name</th><th>Default Value</th><th>Allowable Values</th><th>Description</th></tr><tr><td id="name"><strong>Known Brokers</strong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">A comma-separated list of known Kafka Brokers in the format &lt;host&gt;:&lt;port&gt;<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Topic Name</strong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The Kafka Topic of interest<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Partition</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Specifies which Kafka Partition to add the message to. If using a m
 essage delimiter, all messages in the same FlowFile will be sent to the same partition. If a partition is specified but is not valid, then the FlowFile will be routed to failure relationship.<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Kafka Key</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The Key to use for the Message<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Delivery Guarantee</strong></td><td id="default-value">0</td><td id="allowable-values"><ul><li>Best Effort <img src="../../../../../html/images/iconInfo.png" alt="FlowFile will be routed to success after successfully writing the content to a Kafka node, without waiting for a response. This provides the best performance but may result in data loss." title="FlowFile will be routed to success after successfully writing the content to a Kafka node, without waiting for a response. This provides the best pe
 rformance but may result in data loss."></img></li><li>Guarantee Single Node Delivery <img src="../../../../../html/images/iconInfo.png" alt="FlowFile will be routed to success if the message is received by a single Kafka node, whether or not it is replicated. This is faster than &lt;Guarantee Replicated Delivery&gt; but can result in data loss if a Kafka node crashes" title="FlowFile will be routed to success if the message is received by a single Kafka node, whether or not it is replicated. This is faster than &lt;Guarantee Replicated Delivery&gt; but can result in data loss if a Kafka node crashes"></img></li><li>Guarantee Replicated Delivery <img src="../../../../../html/images/iconInfo.png" alt="FlowFile will be routed to failure unless the message is replicated to the appropriate number of Kafka Nodes according to the Topic configuration" title="FlowFile will be routed to failure unless the message is replicated to the appropriate number of Kafka Nodes according to the Topic c
 onfiguration"></img></li></ul></td><td id="description">Specifies the requirement for guaranteeing that a message is sent to Kafka</td></tr><tr><td id="name">Message Delimiter</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Specifies the delimiter (interpreted in its UTF-8 byte representation) to use for splitting apart multiple messages within a single FlowFile. If not specified, the entire content of the FlowFile will be used as a single message. If specified, the contents of the FlowFile will be split on this delimiter and each section sent as a separate Kafka message. Note that if messages are delimited and some messages for a given FlowFile are transferred successfully while others are not, the messages will be split into individual FlowFiles, such that those messages that were successfully sent are routed to the 'success' relationship while other messages are sent to the 'failure' relationship.<br/><strong>Supports Expression Language: true<
 /strong></td></tr><tr><td id="name"><strong>Max Buffer Size</strong></td><td id="default-value">5 MB</td><td id="allowable-values"></td><td id="description">The maximum amount of data to buffer in memory before sending to Kafka</td></tr><tr><td id="name"><strong>Max Record Size</strong></td><td id="default-value">1 MB</td><td id="allowable-values"></td><td id="description">The maximum size that any individual record can be.</td></tr><tr><td id="name"><strong>Communications Timeout</strong></td><td id="default-value">30 secs</td><td id="allowable-values"></td><td id="description">The amount of time to wait for a response from Kafka before determining that there is a communications error</td></tr><tr><td id="name"><strong>Batch Size</strong></td><td id="default-value">16384</td><td id="allowable-values"></td><td id="description">This configuration controls the default batch size in bytes.The producer will attempt to batch records together into fewer requests whenever multiple records 
 are being sent to the same partition. This helps performance on both the client and the server.</td></tr><tr><td id="name">Queue Buffering Max Time</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Maximum time to buffer data before sending to Kafka. For example a setting of 100 ms will try to batch together 100 milliseconds' worth of messages to send at once. This will improve throughput but adds message delivery latency due to the buffering.</td></tr><tr><td id="name"><strong>Compression Codec</strong></td><td id="default-value">none</td><td id="allowable-values"><ul><li>None <img src="../../../../../html/images/iconInfo.png" alt="Compression will not be used for any topic." title="Compression will not be used for any topic."></img></li><li>GZIP <img src="../../../../../html/images/iconInfo.png" alt="Compress messages using GZIP" title="Compress messages using GZIP"></img></li><li>Snappy <img src="../../../../../html/images/iconInfo.png" alt="Comp
 ress messages using Snappy" title="Compress messages using Snappy"></img></li></ul></td><td id="description">This parameter allows you to specify the compression codec for all data generated by this producer.</td></tr><tr><td id="name"><strong>Client Name</strong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Client Name to use when communicating with Kafka</td></tr></table><h3>Dynamic Properties: </h3><p>Dynamic Properties allow the user to specify both the name and value of a property.<table id="dynamic-properties"><tr><th>Name</th><th>Value</th><th>Description</th></tr><tr><td id="name">The name of a Kafka configuration property.</td><td id="value">The value of a given Kafka configuration property.</td><td>These properties will be added on the Kafka configuration after loading any provided configuration properties. In the event a dynamic property represents a property that was already set as part of the static properties, its value wil be ove
 rriden with warning message describing the override. For the list of available Kafka properties please refer to: http://kafka.apache.org/documentation.html#configuration.</td></tr></table></p><h3>Relationships: </h3><table id="relationships"><tr><th>Name</th><th>Description</th></tr><tr><td>success</td><td>Any FlowFile that is successfully sent to Kafka will be routed to this Relationship</td></tr><tr><td>failure</td><td>Any FlowFile that cannot be sent to Kafka will be routed to this Relationship</td></tr></table><h3>Reads Attributes: </h3>None specified.<h3>Writes Attributes: </h3>None specified.<h3>State management: </h3>This component does not store state.<h3>Restricted: </h3>This component is not restricted.<h3>Input requirement: </h3>This component requires an incoming relationship.</body></html>
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@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<html lang="en">
+    <!--
+      Licensed to the Apache Software Foundation (ASF) under one or more
+      contributor license agreements.  See the NOTICE file distributed with
+      this work for additional information regarding copyright ownership.
+      The ASF licenses this file to You under the Apache License, Version 2.0
+      (the "License"); you may not use this file except in compliance with
+      the License.  You may obtain a copy of the License at
+          http://www.apache.org/licenses/LICENSE-2.0
+      Unless required by applicable law or agreed to in writing, software
+      distributed under the License is distributed on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+      See the License for the specific language governing permissions and
+      limitations under the License.
+    -->
+    <head>
+        <meta charset="utf-8" />
+        <title>ConsumeKafka</title>
+        <link rel="stylesheet" href="../../../../../css/component-usage.css" type="text/css" />
+    </head>
+
+    <body>
+        <!-- Processor Documentation ================================================== -->
+        <h2>Description:</h2>
+        <p>
+            This Processor polls <a href="http://kafka.apache.org/">Apache Kafka</a>
+            for data using KafkaConsumer API available with Kafka 0.9.x. When a message is received 
+            from Kafka, this Processor emits a FlowFile where the content of the FlowFile is the value 
+            of the Kafka message.
+        </p>
+    </body>
+</html>

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+++ nifi/site/trunk/docs/nifi-docs/components/org.apache.nifi/nifi-kafka-0-9-nar/1.4.0/org.apache.nifi.processors.kafka.pubsub.ConsumeKafka/index.html Tue Oct  3 13:30:16 2017
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+<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>ConsumeKafka</title><link rel="stylesheet" href="../../../../../css/component-usage.css" type="text/css"></link></head><script type="text/javascript">window.onload = function(){if(self==top) { document.getElementById('nameHeader').style.display = "inherit"; } }</script><body><h1 id="nameHeader" style="display: none;">ConsumeKafka</h1><h2>Description: </h2><p>Consumes messages from Apache Kafka specifically built against the Kafka 0.9.x Consumer API.  Please note there are cases where the publisher can get into an indefinite stuck state.  We are closely monitoring how this evolves in the Kafka community and will take advantage of those fixes as soon as we can.  In the mean time it is possible to enter states where the only resolution will be to restart the JVM NiFi runs on. The complementary NiFi processor for sending messages is PublishKafka.</p><p><a href="additionalDetails.html">Additional Details...</a></p><
 h3>Tags: </h3><p>Kafka, Get, Ingest, Ingress, Topic, PubSub, Consume, 0.9.x</p><h3>Properties: </h3><p>In the list below, the names of required properties appear in <strong>bold</strong>. Any other properties (not in bold) are considered optional. The table also indicates any default values, and whether a property supports the <a href="../../../../../html/expression-language-guide.html">NiFi Expression Language</a>.</p><table id="properties"><tr><th>Name</th><th>Default Value</th><th>Allowable Values</th><th>Description</th></tr><tr><td id="name"><strong>Kafka Brokers</strong></td><td id="default-value">localhost:9092</td><td id="allowable-values"></td><td id="description">A comma-separated list of known Kafka Brokers in the format &lt;host&gt;:&lt;port&gt;<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Security Protocol</strong></td><td id="default-value">PLAINTEXT</td><td id="allowable-values"><ul><li>PLAINTEXT <img src="../../../../../h
 tml/images/iconInfo.png" alt="PLAINTEXT" title="PLAINTEXT"></img></li><li>SSL <img src="../../../../../html/images/iconInfo.png" alt="SSL" title="SSL"></img></li><li>SASL_PLAINTEXT <img src="../../../../../html/images/iconInfo.png" alt="SASL_PLAINTEXT" title="SASL_PLAINTEXT"></img></li><li>SASL_SSL <img src="../../../../../html/images/iconInfo.png" alt="SASL_SSL" title="SASL_SSL"></img></li></ul></td><td id="description">Protocol used to communicate with brokers. Corresponds to Kafka's 'security.protocol' property.</td></tr><tr><td id="name">Kerberos Service Name</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The Kerberos principal name that Kafka runs as. This can be defined either in Kafka's JAAS config or in Kafka's config. Corresponds to Kafka's 'security.protocol' property.It is ignored unless one of the SASL options of the &lt;Security Protocol&gt; are selected.</td></tr><tr><td id="name">SSL Context Service</td><td id="default-value"></td>
 <td id="allowable-values"><strong>Controller Service API: </strong><br/>SSLContextService<br/><strong>Implementations: </strong><a href="../../../nifi-ssl-context-service-nar/1.4.0/org.apache.nifi.ssl.StandardSSLContextService/index.html">StandardSSLContextService</a><br/><a href="../../../nifi-ssl-context-service-nar/1.4.0/org.apache.nifi.ssl.StandardRestrictedSSLContextService/index.html">StandardRestrictedSSLContextService</a></td><td id="description">Specifies the SSL Context Service to use for communicating with Kafka.</td></tr><tr><td id="name"><strong>Topic Name(s)</strong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The name of the Kafka Topic(s) to pull from. More than one can be supplied if comma separated.<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Group ID</strong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">A Group ID is used to identify consum
 ers that are within the same consumer group. Corresponds to Kafka's 'group.id' property.</td></tr><tr><td id="name"><strong>Offset Reset</strong></td><td id="default-value">latest</td><td id="allowable-values"><ul><li>earliest <img src="../../../../../html/images/iconInfo.png" alt="Automatically reset the offset to the earliest offset" title="Automatically reset the offset to the earliest offset"></img></li><li>latest <img src="../../../../../html/images/iconInfo.png" alt="Automatically reset the offset to the latest offset" title="Automatically reset the offset to the latest offset"></img></li><li>none <img src="../../../../../html/images/iconInfo.png" alt="Throw exception to the consumer if no previous offset is found for the consumer's group" title="Throw exception to the consumer if no previous offset is found for the consumer's group"></img></li></ul></td><td id="description">Allows you to manage the condition when there is no initial offset in Kafka or if the current offset do
 es not exist any more on the server (e.g. because that data has been deleted). Corresponds to Kafka's 'auto.offset.reset' property.</td></tr><tr><td id="name"><strong>Key Attribute Encoding</strong></td><td id="default-value">utf-8</td><td id="allowable-values"><ul><li>UTF-8 Encoded <img src="../../../../../html/images/iconInfo.png" alt="The key is interpreted as a UTF-8 Encoded string." title="The key is interpreted as a UTF-8 Encoded string."></img></li><li>Hex Encoded <img src="../../../../../html/images/iconInfo.png" alt="The key is interpreted as arbitrary binary data and is encoded using hexadecimal characters with uppercase letters" title="The key is interpreted as arbitrary binary data and is encoded using hexadecimal characters with uppercase letters"></img></li></ul></td><td id="description">FlowFiles that are emitted have an attribute named 'kafka.key'. This property dictates how the value of the attribute should be encoded.</td></tr><tr><td id="name">Message Demarcator</
 td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Since KafkaConsumer receives messages in batches, you have an option to output FlowFiles which contains all Kafka messages in a single batch for a given topic and partition and this property allows you to provide a string (interpreted as UTF-8) to use for demarcating apart multiple Kafka messages. This is an optional property and if not provided each Kafka message received will result in a single FlowFile which  time it is triggered. To enter special character such as 'new line' use CTRL+Enter or Shift+Enter depending on the OS<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Max Poll Records</td><td id="default-value">10000</td><td id="allowable-values"></td><td id="description">Specifies the maximum number of records Kafka should return in a single poll.</td></tr><tr><td id="name">Max Uncommitted Time</td><td id="default-value">1 secs</td><td id="allowable-values"><
 /td><td id="description">Specifies the maximum amount of time allowed to pass before offsets must be committed. This value impacts how often offsets will be committed.  Committing offsets less often increases throughput but also increases the window of potential data duplication in the event of a rebalance or JVM restart between commits.  This value is also related to maximum poll records and the use of a message demarcator.  When using a message demarcator we can have far more uncommitted messages than when we're not as there is much less for us to keep track of in memory.</td></tr></table><h3>Dynamic Properties: </h3><p>Dynamic Properties allow the user to specify both the name and value of a property.<table id="dynamic-properties"><tr><th>Name</th><th>Value</th><th>Description</th></tr><tr><td id="name">The name of a Kafka configuration property.</td><td id="value">The value of a given Kafka configuration property.</td><td>These properties will be added on the Kafka configuration
  after loading any provided configuration properties. In the event a dynamic property represents a property that was already set, its value will be ignored and WARN message logged. For the list of available Kafka properties please refer to: http://kafka.apache.org/documentation.html#configuration. </td></tr></table></p><h3>Relationships: </h3><table id="relationships"><tr><th>Name</th><th>Description</th></tr><tr><td>success</td><td>FlowFiles received from Kafka.  Depending on demarcation strategy it is a flow file per message or a bundle of messages grouped by topic and partition.</td></tr></table><h3>Reads Attributes: </h3>None specified.<h3>Writes Attributes: </h3><table id="writes-attributes"><tr><th>Name</th><th>Description</th></tr><tr><td>kafka.count</td><td>The number of messages written if more than one</td></tr><tr><td>kafka.key</td><td>The key of message if present and if single message. How the key is encoded depends on the value of the 'Key Attribute Encoding' property.
 </td></tr><tr><td>kafka.offset</td><td>The offset of the message in the partition of the topic.</td></tr><tr><td>kafka.partition</td><td>The partition of the topic the message or message bundle is from</td></tr><tr><td>kafka.topic</td><td>The topic the message or message bundle is from</td></tr></table><h3>State management: </h3>This component does not store state.<h3>Restricted: </h3>This component is not restricted.<h3>Input requirement: </h3>This component does not allow an incoming relationship.</body></html>
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@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<html lang="en">
+    <!--
+      Licensed to the Apache Software Foundation (ASF) under one or more
+      contributor license agreements.  See the NOTICE file distributed with
+      this work for additional information regarding copyright ownership.
+      The ASF licenses this file to You under the Apache License, Version 2.0
+      (the "License"); you may not use this file except in compliance with
+      the License.  You may obtain a copy of the License at
+          http://www.apache.org/licenses/LICENSE-2.0
+      Unless required by applicable law or agreed to in writing, software
+      distributed under the License is distributed on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+      See the License for the specific language governing permissions and
+      limitations under the License.
+    -->
+    <head>
+        <meta charset="utf-8" />
+        <title>PublishKafka</title>
+        <link rel="stylesheet" href="../../../../../css/component-usage.css" type="text/css" />
+    </head>
+
+    <body>
+        <!-- Processor Documentation ================================================== -->
+        <h2>Description:</h2>
+        <p>
+            This Processor puts the contents of a FlowFile to a Topic in
+            <a href="http://kafka.apache.org/">Apache Kafka</a> using KafkaProducer API available
+            with Kafka 0.9.x API. The content of a FlowFile becomes the contents of a Kafka message.
+            This message is optionally assigned a key by using the &lt;Kafka Key&gt; Property.
+        </p>
+
+        <p>
+            The Processor allows the user to configure an optional Message Demarcator that
+            can be used to send many messages per FlowFile. For example, a <i>\n</i> could be used
+            to indicate that the contents of the FlowFile should be used to send one message
+            per line of text. It also supports multi-char demarcators (e.g., 'my custom demarcator').
+            If the property is not set, the entire contents of the FlowFile
+            will be sent as a single message. When using the demarcator, if some messages are
+            successfully sent but other messages fail to send, the resulting FlowFile will be
+            considered a failed FlowFile and will have additional attributes to that effect.
+            One of such attributes is 'failed.last.idx' which indicates the index of the last message
+            that was successfully ACKed by Kafka. (if no demarcator is used the value of this index will be -1).
+            This will allow PublishKafka to only re-send un-ACKed messages on the next re-try.
+        </p>
+    </body>
+</html>



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