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svn commit: r1798216 [13/39] - in /nifi/site/trunk/docs: ./ nifi-docs/
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+<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>PublishMQTT</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;">PublishMQTT</h1><h2>Description: </h2><p>Publishes a message to an MQTT topic</p><h3>Tags: </h3><p>publish, MQTT, IOT</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>Bro
ker URI</strong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The URI to use to connect to the MQTT broker (e.g. tcp://localhost:1883). The 'tcp' and 'ssl' schemes are supported. In order to use 'ssl', the SSL Context Service property must be set.</td></tr><tr><td id="name"><strong>Client ID</strong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">MQTT client ID to use</td></tr><tr><td id="name">Username</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Username to use when connecting to the broker</td></tr><tr><td id="name">Password</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Password to use when connecting to the broker</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>Implementation:</strong><a href="../.
./../nifi-ssl-context-service-nar/1.3.0/org.apache.nifi.ssl.StandardSSLContextService/index.html">StandardSSLContextService</a></td><td id="description">The SSL Context Service used to provide client certificate information for TLS/SSL connections.</td></tr><tr><td id="name">Last Will Topic</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The topic to send the client's Last Will to. If the Last Will topic and message are not set then a Last Will will not be sent.</td></tr><tr><td id="name">Last Will Message</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The message to send as the client's Last Will. If the Last Will topic and message are not set then a Last Will will not be sent.</td></tr><tr><td id="name">Last Will Retain</td><td id="default-value"></td><td id="allowable-values"><ul><li>true</li><li>false</li></ul></td><td id="description">Whether to retain the client's Last Will. If the Last Will topic and mes
sage are not set then a Last Will will not be sent.</td></tr><tr><td id="name">Last Will QoS Level</td><td id="default-value"></td><td id="allowable-values"><ul><li>0 - At most once <img src="../../../../../html/images/iconInfo.png" alt="Best effort delivery. A message wonât be acknowledged by the receiver or stored and redelivered by the sender. This is often called âfire and forgetâ and provides the same guarantee as the underlying TCP protocol." title="Best effort delivery. A message wonât be acknowledged by the receiver or stored and redelivered by the sender. This is often called âfire and forgetâ and provides the same guarantee as the underlying TCP protocol."></img></li><li>1 - At least once <img src="../../../../../html/images/iconInfo.png" alt="Guarantees that a message will be delivered at least once to the receiver. The message can also be delivered more than once" title="Guarantees that a message will be delivered at least once to the receiv
er. The message can also be delivered more than once"></img></li><li>2 - Exactly once <img src="../../../../../html/images/iconInfo.png" alt="Guarantees that each message is received only once by the counterpart. It is the safest and also the slowest quality of service level. The guarantee is provided by two round-trip flows between sender and receiver." title="Guarantees that each message is received only once by the counterpart. It is the safest and also the slowest quality of service level. The guarantee is provided by two round-trip flows between sender and receiver."></img></li></ul></td><td id="description">QoS level to be used when publishing the Last Will Message</td></tr><tr><td id="name"><strong>Session state</strong></td><td id="default-value">true</td><td id="allowable-values"><ul><li>Clean Session <img src="../../../../../html/images/iconInfo.png" alt="Client and Server discard any previous session and start a new one. This session lasts as long as the network connectio
n. State data associated with this session is not reused in any subsequent session" title="Client and Server discard any previous session and start a new one. This session lasts as long as the network connection. State data associated with this session is not reused in any subsequent session"></img></li><li>Resume Session <img src="../../../../../html/images/iconInfo.png" alt="Server resumes communications with the client based on state from the current session (as identified by the ClientID). The client and server store the session after the client and server are disconnected. After the disconnection of a session that was not a clean session, the server stores further QoS 1 and QoS 2 messages that match any subscriptions that the client had at the time of disconnection as part of the session state" title="Server resumes communications with the client based on state from the current session (as identified by the ClientID). The client and server store the session after the client and
server are disconnected. After the disconnection of a session that was not a clean session, the server stores further QoS 1 and QoS 2 messages that match any subscriptions that the client had at the time of disconnection as part of the session state"></img></li></ul></td><td id="description">Whether to start afresh or resume previous flows. See the allowable value descriptions for more details.</td></tr><tr><td id="name"><strong>MQTT Specification Version</strong></td><td id="default-value">0</td><td id="allowable-values"><ul><li>AUTO <img src="../../../../../html/images/iconInfo.png" alt="Start with v3.1.1 and fallback to v3.1.0 if not supported by a broker" title="Start with v3.1.1 and fallback to v3.1.0 if not supported by a broker"></img></li><li>v3.1.1</li><li>v3.1.0</li></ul></td><td id="description">The MQTT specification version when connecting with the broker. See the allowable value descriptions for more details.</td></tr><tr><td id="name">Connection Timeout (seconds)</td
><td id="default-value">30</td><td id="allowable-values"></td><td id="description">Maximum time interval the client will wait for the network connection to the MQTT server to be established. The default timeout is 30 seconds. A value of 0 disables timeout processing meaning the client will wait until the network connection is made successfully or fails.</td></tr><tr><td id="name">Keep Alive Interval (seconds)</td><td id="default-value">60</td><td id="allowable-values"></td><td id="description">Defines the maximum time interval between messages sent or received. It enables the client to detect if the server is no longer available, without having to wait for the TCP/IP timeout. The client will ensure that at least one message travels across the network within each keep alive period. In the absence of a data-related message during the time period, the client sends a very small "ping" message, which the server will acknowledge. A value of 0 disables keepalive processing in the client.</
td></tr><tr><td id="name"><strong>Topic</strong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The topic to publish the message to.<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Quality of Service(QoS)</strong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The Quality of Service(QoS) to send the message with. Accepts three values '0', '1' and '2'; '0' for 'at most once', '1' for 'at least once', '2' for 'exactly once'. Expression language is allowed in order to support publishing messages with different QoS but the end value of the property must be either '0', '1' or '2'. <br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Retain Message</strong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Whether or not the retain flag should be set on the MQTT message.<br/><strong>Supports Expression
Language: true</strong></td></tr></table><h3>Relationships: </h3><table id="relationships"><tr><th>Name</th><th>Description</th></tr><tr><td>success</td><td>FlowFiles that are sent successfully to the destination are transferred to this relationship.</td></tr><tr><td>failure</td><td>FlowFiles that failed to send to the destination are transferred 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.<h3>See Also:</h3><p><a href="../org.apache.nifi.processors.mqtt.ConsumeMQTT/index.html">ConsumeMQTT</a></p></body></html>
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+<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>FetchParquet</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;">FetchParquet</h1><h2>Description: </h2><p>Reads from a given Parquet file and writes records to the content of the flow file using the selected record writer. The original Parquet file will remain unchanged, and the content of the flow file will be replaced with records of the selected type. This processor can be used with ListHDFS or ListFile to obtain a listing of files to fetch.</p><h3>Tags: </h3><p>parquet, hadoop, HDFS, get, ingest, fetch, source, restricted</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">Hadoop Configuration Resources</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">A file or comma separated list of files which contains the Hadoop file system configuration. Without this, Hadoop will search the classpath for a 'core-site.xml' and 'hdfs-site.xml' file or will revert to a default configuration.</td></tr><tr><td id="name">Kerberos Principal</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Kerberos principal to authenticate as. Requires nifi.kerberos.krb5.file to be set in your nifi.properties</td></tr><tr><td id="name">Kerberos Keytab</td><td id="default-value"></td><
td id="allowable-values"></td><td id="description">Kerberos keytab associated with the principal. Requires nifi.kerberos.krb5.file to be set in your nifi.properties</td></tr><tr><td id="name">Kerberos Relogin Period</td><td id="default-value">4 hours</td><td id="allowable-values"></td><td id="description">Period of time which should pass before attempting a kerberos relogin</td></tr><tr><td id="name">Additional Classpath Resources</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">A comma-separated list of paths to files and/or directories that will be added to the classpath. When specifying a directory, all files with in the directory will be added to the classpath, but further sub-directories will not be included.</td></tr><tr><td id="name"><strong>Filename</strong></td><td id="default-value">${path}/${filename}</td><td id="allowable-values"></td><td id="description">The name of the file to retrieve<br/><strong>Supports Expression Language: true</s
trong></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/1.3.0/org.apache.nifi.text.FreeFormTextRecordSetWriter/index.html">FreeFormTextRecordSetWriter</a><br/><a href="../../../nifi-record-serialization-services-nar/1.3.0/org.apache.nifi.csv.CSVRecordSetWriter/index.html">CSVRecordSetWriter</a><br/><a href="../../../nifi-record-serialization-services-nar/1.3.0/org.apache.nifi.json.JsonRecordSetWriter/index.html">JsonRecordSetWriter</a><br/><a href="../../../nifi-scripting-nar/1.3.0/org.apache.nifi.record.script.ScriptedRecordSetWriter/index.html">ScriptedRecordSetWriter</a><br/><a href="../../../nifi-record-serialization-services-nar/1.3.0/org.apache.nifi.avro.AvroRecordSetWriter/index.html">AvroRecordSetWriter</a></td><td id="description">The service for
writing records to the FlowFile content</td></tr></table><h3>Relationships: </h3><table id="relationships"><tr><th>Name</th><th>Description</th></tr><tr><td>retry</td><td>FlowFiles will be routed to this relationship if the content of the file cannot be retrieved, but might be able to be in the future if tried again. This generally indicates that the Fetch should be tried again.</td></tr><tr><td>success</td><td>FlowFiles will be routed to this relationship once they have been updated with the content of the file</td></tr><tr><td>failure</td><td>FlowFiles will be routed to this relationship if the content of the file cannot be retrieved and trying again will likely not be helpful. This would occur, for instance, if the file is not found or if there is a permissions issue</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>fetch.failure.reason</td><td>When a FlowFile is r
outed to 'failure', this attribute is added indicating why the file could not be fetched from the given filesystem.</td></tr><tr><td>record.count</td><td>The number of records in the resulting flow file</td></tr></table><h3>State management: </h3>This component does not store state.<h3>Restricted: </h3>Provides operator the ability to retrieve any file that NiFi has access to in HDFS or the local filesystem.<h3>Input requirement: </h3>This component requires an incoming relationship.<h3>See Also:</h3><p><a href="../org.apache.nifi.processors.parquet.PutParquet/index.html">PutParquet</a></p></body></html>
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+<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>PutParquet</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;">PutParquet</h1><h2>Description: </h2><p>Reads records from an incoming FlowFile using the provided Record Reader, and writes those records to a Parquet file. The schema for the Parquet file must be provided in the processor properties. This processor will first write a temporary dot file and upon successfully writing every record to the dot file, it will rename the dot file to it's final name. If the dot file cannot be renamed, the rename operation will be attempted up to 10 times, and if still not successful, the dot file will be deleted and the flow file will be routed to failure. If any error occ
urs while reading records from the input, or writing records to the output, the entire dot file will be removed and the flow file will be routed to failure or retry, depending on the error.</p><h3>Tags: </h3><p>put, parquet, hadoop, HDFS, filesystem, restricted</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">Hadoop Configuration Resources</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">A file or comma separated list of files which contains the Hadoop file system configuration. Without this, Hadoop will search the classpath for
a 'core-site.xml' and 'hdfs-site.xml' file or will revert to a default configuration.</td></tr><tr><td id="name">Kerberos Principal</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Kerberos principal to authenticate as. Requires nifi.kerberos.krb5.file to be set in your nifi.properties</td></tr><tr><td id="name">Kerberos Keytab</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Kerberos keytab associated with the principal. Requires nifi.kerberos.krb5.file to be set in your nifi.properties</td></tr><tr><td id="name">Kerberos Relogin Period</td><td id="default-value">4 hours</td><td id="allowable-values"></td><td id="description">Period of time which should pass before attempting a kerberos relogin</td></tr><tr><td id="name">Additional Classpath Resources</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">A comma-separated list of paths to files and/or directories that will be added
to the classpath. When specifying a directory, all files with in the directory will be added to the classpath, but further sub-directories will not be included.</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/1.3.0/org.apache.nifi.json.JsonPathReader/index.html">JsonPathReader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.3.0/org.apache.nifi.csv.CSVReader/index.html">CSVReader</a><br/><a href="../../../nifi-scripting-nar/1.3.0/org.apache.nifi.record.script.ScriptedReader/index.html">ScriptedReader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.3.0/org.apache.nifi.avro.AvroReader/index.html">AvroReader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.3.0/org.apache.nifi.grok.GrokReader/index.html">Gro
kReader</a><br/><a href="../../../nifi-record-serialization-services-nar/1.3.0/org.apache.nifi.json.JsonTreeReader/index.html">JsonTreeReader</a></td><td id="description">The service for reading records from incoming flow files.</td></tr><tr><td id="name"><strong>Directory</strong></td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The parent directory to which files should be written. Will be created if it doesn't exist.<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Schema Access Strategy</strong></td><td id="default-value">schema-name</td><td id="allowable-values"><ul><li>Use 'Schema Name' Property <img src="../../../../../html/images/iconInfo.png" alt="The name of the Schema to use is specified by the 'Schema Name' Property. The value of this property is used to lookup the Schema in the configured Schema Registry service." title="The name of the Schema to use is specified by the 'Schema Name' Property.
The value of this property is used to lookup the Schema in the configured Schema Registry service."></img></li><li>Use 'Schema Text' Property <img src="../../../../../html/images/iconInfo.png" alt="The text of the Schema itself is specified by the 'Schema Text' Property. The value of this property must be a valid Avro Schema. If Expression Language is used, the value of the 'Schema Text' property must be valid after substituting the expressions." title="The text of the Schema itself is specified by the 'Schema Text' Property. The value of this property must be a valid Avro Schema. If Expression Language is used, the value of the 'Schema Text' property must be valid after substituting the expressions."></img></li><li>HWX Schema Reference Attributes <img src="../../../../../html/images/iconInfo.png" alt="The FlowFile contains 3 Attributes that will be used to lookup a Schema from the configured Schema Registry: 'schema.identifier', 'schema.version', and 'schema.protocol.version'" titl
e="The FlowFile contains 3 Attributes that will be used to lookup a Schema from the configured Schema Registry: 'schema.identifier', 'schema.version', and 'schema.protocol.version'"></img></li><li>HWX Content-Encoded Schema Reference <img src="../../../../../html/images/iconInfo.png" alt="The content of the FlowFile contains a reference to a schema in the Schema Registry service. The reference is encoded as a single byte indicating the 'protocol version', followed by 8 bytes indicating the schema identifier, and finally 4 bytes indicating the schema version, as per the Hortonworks Schema Registry serializers and deserializers, found at https://github.com/hortonworks/registry" title="The content of the FlowFile contains a reference to a schema in the Schema Registry service. The reference is encoded as a single byte indicating the 'protocol version', followed by 8 bytes indicating the schema identifier, and finally 4 bytes indicating the schema version, as per the Hortonworks Schema
Registry serializers and deserializers, found at https://github.com/hortonworks/registry"></img></li></ul></td><td id="description">Specifies how to obtain the schema that is to be used for writing the data.</td></tr><tr><td id="name">Schema Registry</td><td id="default-value"></td><td id="allowable-values"><strong>Controller Service API: </strong><br/>SchemaRegistry<br/><strong>Implementations: </strong><a href="../../../nifi-registry-nar/1.3.0/org.apache.nifi.schemaregistry.services.AvroSchemaRegistry/index.html">AvroSchemaRegistry</a><br/><a href="../../../nifi-hwx-schema-registry-nar/1.3.0/org.apache.nifi.schemaregistry.hortonworks.HortonworksSchemaRegistry/index.html">HortonworksSchemaRegistry</a></td><td id="description">Specifies the Controller Service to use for the Schema Registry</td></tr><tr><td id="name">Schema Name</td><td id="default-value">${schema.name}</td><td id="allowable-values"></td><td id="description">Specifies the name of the schema to lookup in the Schema Re
gistry property<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Schema Text</td><td id="default-value">${avro.schema}</td><td id="allowable-values"></td><td id="description">The text of an Avro-formatted Schema<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name"><strong>Compression Type</strong></td><td id="default-value">UNCOMPRESSED</td><td id="allowable-values"><ul><li>UNCOMPRESSED</li><li>SNAPPY</li><li>GZIP</li><li>LZO</li></ul></td><td id="description">The type of compression for the file being written.</td></tr><tr><td id="name"><strong>Overwrite Files</strong></td><td id="default-value">false</td><td id="allowable-values"><ul><li>true</li><li>false</li></ul></td><td id="description">Whether or not to overwrite existing files in the same directory with the same name. When set to false, flow files will be routed to failure when a file exists in the same directory with the same name.</td></tr><tr><td id="name">Pe
rmissions umask</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">A umask represented as an octal number which determines the permissions of files written to HDFS. This overrides the Hadoop Configuration dfs.umaskmode</td></tr><tr><td id="name">Remote Group</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Changes the group of the HDFS file to this value after it is written. This only works if NiFi is running as a user that has HDFS super user privilege to change group</td></tr><tr><td id="name">Remote Owner</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Changes the owner of the HDFS file to this value after it is written. This only works if NiFi is running as a user that has HDFS super user privilege to change owner</td></tr><tr><td id="name">Row Group Size</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The row group size used by the Parquet
writer. The value is specified in the format of <Data Size> <Data Unit> where Data Unit is one of B, KB, MB, GB, TB.<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Page Size</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The page size used by the Parquet writer. The value is specified in the format of <Data Size> <Data Unit> where Data Unit is one of B, KB, MB, GB, TB.<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Dictionary Page Size</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The dictionary page size used by the Parquet writer. The value is specified in the format of <Data Size> <Data Unit> where Data Unit is one of B, KB, MB, GB, TB.<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Max Padding Size</td><td id="default-value"></td><td id="allowable-values"></td><td
id="description">The maximum amount of padding that will be used to align row groups with blocks in the underlying filesystem. If the underlying filesystem is not a block filesystem like HDFS, this has no effect. The value is specified in the format of <Data Size> <Data Unit> where Data Unit is one of B, KB, MB, GB, TB.<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Enable Dictionary Encoding</td><td id="default-value"></td><td id="allowable-values"><ul><li>true</li><li>false</li></ul></td><td id="description">Specifies whether dictionary encoding should be enabled for the Parquet writer</td></tr><tr><td id="name">Enable Validation</td><td id="default-value"></td><td id="allowable-values"><ul><li>true</li><li>false</li></ul></td><td id="description">Specifies whether validation should be enabled for the Parquet writer</td></tr><tr><td id="name">Writer Version</td><td id="default-value"></td><td id="allowable-values"><ul><li>PARQUET_1_
0</li><li>PARQUET_2_0</li></ul></td><td id="description">Specifies the version used by Parquet writer</td></tr><tr><td id="name">Remove CRC Files</td><td id="default-value">false</td><td id="allowable-values"><ul><li>true</li><li>false</li></ul></td><td id="description">Specifies whether the corresponding CRC file should be deleted upon successfully writing a Parquet file</td></tr></table><h3>Relationships: </h3><table id="relationships"><tr><th>Name</th><th>Description</th></tr><tr><td>retry</td><td>Flow Files that could not be processed due to issues that can be retried are transferred to this relationship</td></tr><tr><td>success</td><td>Flow Files that have been successfully processed are transferred to this relationship</td></tr><tr><td>failure</td><td>Flow Files that could not be processed due to issue that cannot be retried are transferred to this relationship</td></tr></table><h3>Reads Attributes: </h3><table id="reads-attributes"><tr><th>Name</th><th>Description</th></tr><t
r><td>filename</td><td>The name of the file to write comes from the value of this attribute.</td></tr></table><h3>Writes Attributes: </h3><table id="writes-attributes"><tr><th>Name</th><th>Description</th></tr><tr><td>filename</td><td>The name of the file is stored in this attribute.</td></tr><tr><td>absolute.hdfs.path</td><td>The absolute path to the file is stored in this attribute.</td></tr><tr><td>record.count</td><td>The number of records written to the Parquet file</td></tr></table><h3>State management: </h3>This component does not store state.<h3>Restricted: </h3>Provides operator the ability to write to any file that NiFi has access to in HDFS or the local filesystem.<h3>Input requirement: </h3>This component requires an incoming relationship.</body></html>
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+<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>ConvertExcelToCSVProcessor</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;">ConvertExcelToCSVProcessor</h1><h2>Description: </h2><p>Consumes a Microsoft Excel document and converts each worksheet to csv. Each sheet from the incoming Excel document will generate a new Flowfile that will be output from this processor. Each output Flowfile's contents will be formatted as a csv file where the each row from the excel sheet is output as a newline in the csv file. This processor is currently only capable of processing .xlsx (XSSF 2007 OOXML file format) Excel documents and not older .xls (HSSF '97(-2007) file format) documents. This processor also expects well forma
tted CSV content and will not escape cell's containing invalid content such as newlines or additional commas.</p><h3>Tags: </h3><p>excel, csv, poi</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">Sheets to Extract</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Comma separated list of Excel document sheet names that should be extracted from the excel document. If this property is left blank then all of the sheets will be extracted from the Excel document. The list of names is case in-sensitive. Any sheets not specified in this
value will be ignored.<br/><strong>Supports Expression Language: true</strong></td></tr></table><h3>Relationships: </h3><table id="relationships"><tr><th>Name</th><th>Description</th></tr><tr><td>success</td><td>Excel data converted to csv</td></tr><tr><td>failure</td><td>Failed to parse the Excel document</td></tr><tr><td>original</td><td>Original Excel document received by this processor</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>sheetname</td><td>The name of the Excel sheet that this particular row of data came from in the Excel document</td></tr><tr><td>numrows</td><td>The number of rows in this Excel Sheet</td></tr><tr><td>sourcefilename</td><td>The name of the Excel document file that this data originated from</td></tr><tr><td>convertexceltocsvprocessor.error</td><td>Error message that was encountered on a per Excel sheet basis. This attribute is only pop
ulated if an error was occured while processing the particular sheet. Having the error present at the sheet level will allow for the end user to better understand what syntax errors in their excel doc on a larger scale caused the error.</td></tr></table><h3>State management: </h3>This component does not store state.<h3>Restricted: </h3>This component is not restricted.</body></html>
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+<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>AvroReader</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;">AvroReader</h1><h2>Description: </h2><p>Parses Avro data and returns each Avro record as an separate Record object. The Avro data may contain the schema itself, or the schema can be externalized and accessed by one of the methods offered by the 'Schema Access Strategy' property.</p><h3>Tags: </h3><p>avro, parse, record, row, reader, delimited, comma, separated, values</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 prope
rty 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>Schema Access Strategy</strong></td><td id="default-value">embedded-avro-schema</td><td id="allowable-values"><ul><li>Use 'Schema Name' Property <img src="../../../../../html/images/iconInfo.png" alt="The name of the Schema to use is specified by the 'Schema Name' Property. The value of this property is used to lookup the Schema in the configured Schema Registry service." title="The name of the Schema to use is specified by the 'Schema Name' Property. The value of this property is used to lookup the Schema in the configured Schema Registry service."></img></li><li>Use 'Schema Text' Property <img src="../../../../../html/images/iconInfo.png" alt="The text of the Schema itself is specified by the 'Schema Text' Property. The value of this pr
operty must be a valid Avro Schema. If Expression Language is used, the value of the 'Schema Text' property must be valid after substituting the expressions." title="The text of the Schema itself is specified by the 'Schema Text' Property. The value of this property must be a valid Avro Schema. If Expression Language is used, the value of the 'Schema Text' property must be valid after substituting the expressions."></img></li><li>HWX Schema Reference Attributes <img src="../../../../../html/images/iconInfo.png" alt="The FlowFile contains 3 Attributes that will be used to lookup a Schema from the configured Schema Registry: 'schema.identifier', 'schema.version', and 'schema.protocol.version'" title="The FlowFile contains 3 Attributes that will be used to lookup a Schema from the configured Schema Registry: 'schema.identifier', 'schema.version', and 'schema.protocol.version'"></img></li><li>HWX Content-Encoded Schema Reference <img src="../../../../../html/images/iconInfo.png" alt="Th
e content of the FlowFile contains a reference to a schema in the Schema Registry service. The reference is encoded as a single byte indicating the 'protocol version', followed by 8 bytes indicating the schema identifier, and finally 4 bytes indicating the schema version, as per the Hortonworks Schema Registry serializers and deserializers, found at https://github.com/hortonworks/registry" title="The content of the FlowFile contains a reference to a schema in the Schema Registry service. The reference is encoded as a single byte indicating the 'protocol version', followed by 8 bytes indicating the schema identifier, and finally 4 bytes indicating the schema version, as per the Hortonworks Schema Registry serializers and deserializers, found at https://github.com/hortonworks/registry"></img></li><li>Use Embedded Avro Schema <img src="../../../../../html/images/iconInfo.png" alt="The FlowFile has the Avro Schema embedded within the content, and this schema will be used." title="The Fl
owFile has the Avro Schema embedded within the content, and this schema will be used."></img></li></ul></td><td id="description">Specifies how to obtain the schema that is to be used for interpreting the data.</td></tr><tr><td id="name">Schema Registry</td><td id="default-value"></td><td id="allowable-values"><strong>Controller Service API: </strong><br/>SchemaRegistry<br/><strong>Implementations: </strong><a href="../../../nifi-registry-nar/1.3.0/org.apache.nifi.schemaregistry.services.AvroSchemaRegistry/index.html">AvroSchemaRegistry</a><br/><a href="../../../nifi-hwx-schema-registry-nar/1.3.0/org.apache.nifi.schemaregistry.hortonworks.HortonworksSchemaRegistry/index.html">HortonworksSchemaRegistry</a></td><td id="description">Specifies the Controller Service to use for the Schema Registry</td></tr><tr><td id="name">Schema Name</td><td id="default-value">${schema.name}</td><td id="allowable-values"></td><td id="description">Specifies the name of the schema to lookup in the Schema
Registry property<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Schema Text</td><td id="default-value">${avro.schema}</td><td id="allowable-values"></td><td id="description">The text of an Avro-formatted Schema<br/><strong>Supports Expression Language: true</strong></td></tr></table><h3>State management: </h3>This component does not store state.<h3>Restricted: </h3>This component is not restricted.</body></html>
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+<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>AvroRecordSetWriter</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;">AvroRecordSetWriter</h1><h2>Description: </h2><p>Writes the contents of a RecordSet in Binary Avro format.</p><h3>Tags: </h3><p>avro, result, set, writer, serializer, record, recordset, row</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>Schema Write Strategy</strong></td><td id="default-value">avro-embedded</td><td id="allowable-values"><ul><li>Embed Avro Schema <img src="../../../../../html/images/iconInfo.png" alt="The FlowFile will have the Avro schema embedded into the content, as is typical with Avro" title="The FlowFile will have the Avro schema embedded into the content, as is typical with Avro"></img></li><li>Set 'schema.name' Attribute <img src="../../../../../html/images/iconInfo.png" alt="The FlowFile will be given an attribute named 'schema.name' and this attribute will indicate the name of the schema in the Schema Registry. Note that ifthe schema for a record is not obtained from a Schema Registry, then no attribute will be added." title="The FlowFile will be given an attribute named 'schema.name' and this attribute will indicate the name of the schema in the Schema Registry. Note that ifthe schema for a record is not obtained
from a Schema Registry, then no attribute will be added."></img></li><li>Set 'avro.schema' Attribute <img src="../../../../../html/images/iconInfo.png" alt="The FlowFile will be given an attribute named 'avro.schema' and this attribute will contain the Avro Schema that describes the records in the FlowFile. The contents of the FlowFile need not be Avro, but the text of the schema will be used." title="The FlowFile will be given an attribute named 'avro.schema' and this attribute will contain the Avro Schema that describes the records in the FlowFile. The contents of the FlowFile need not be Avro, but the text of the schema will be used."></img></li><li>HWX Schema Reference Attributes <img src="../../../../../html/images/iconInfo.png" alt="The FlowFile will be given a set of 3 attributes to describe the schema: 'schema.identifier', 'schema.version', and 'schema.protocol.version'. Note that if the schema for a record does not contain the necessary identifier and version, an Exception
will be thrown when attempting to write the data." title="The FlowFile will be given a set of 3 attributes to describe the schema: 'schema.identifier', 'schema.version', and 'schema.protocol.version'. Note that if the schema for a record does not contain the necessary identifier and version, an Exception will be thrown when attempting to write the data."></img></li><li>HWX Content-Encoded Schema Reference <img src="../../../../../html/images/iconInfo.png" alt="The content of the FlowFile will contain a reference to a schema in the Schema Registry service. The reference is encoded as a single byte indicating the 'protocol version', followed by 8 bytes indicating the schema identifier, and finally 4 bytes indicating the schema version, as per the Hortonworks Schema Registry serializers and deserializers, as found at https://github.com/hortonworks/registry. This will be prepended to each FlowFile. Note that if the schema for a record does not contain the necessary identifier and versi
on, an Exception will be thrown when attempting to write the data." title="The content of the FlowFile will contain a reference to a schema in the Schema Registry service. The reference is encoded as a single byte indicating the 'protocol version', followed by 8 bytes indicating the schema identifier, and finally 4 bytes indicating the schema version, as per the Hortonworks Schema Registry serializers and deserializers, as found at https://github.com/hortonworks/registry. This will be prepended to each FlowFile. Note that if the schema for a record does not contain the necessary identifier and version, an Exception will be thrown when attempting to write the data."></img></li></ul></td><td id="description">Specifies how the schema for a Record should be added to the data.</td></tr><tr><td id="name"><strong>Schema Access Strategy</strong></td><td id="default-value">schema-name</td><td id="allowable-values"><ul><li>Use 'Schema Name' Property <img src="../../../../../html/images/iconIn
fo.png" alt="The name of the Schema to use is specified by the 'Schema Name' Property. The value of this property is used to lookup the Schema in the configured Schema Registry service." title="The name of the Schema to use is specified by the 'Schema Name' Property. The value of this property is used to lookup the Schema in the configured Schema Registry service."></img></li><li>Use 'Schema Text' Property <img src="../../../../../html/images/iconInfo.png" alt="The text of the Schema itself is specified by the 'Schema Text' Property. The value of this property must be a valid Avro Schema. If Expression Language is used, the value of the 'Schema Text' property must be valid after substituting the expressions." title="The text of the Schema itself is specified by the 'Schema Text' Property. The value of this property must be a valid Avro Schema. If Expression Language is used, the value of the 'Schema Text' property must be valid after substituting the expressions."></img></li><li>HWX
Schema Reference Attributes <img src="../../../../../html/images/iconInfo.png" alt="The FlowFile contains 3 Attributes that will be used to lookup a Schema from the configured Schema Registry: 'schema.identifier', 'schema.version', and 'schema.protocol.version'" title="The FlowFile contains 3 Attributes that will be used to lookup a Schema from the configured Schema Registry: 'schema.identifier', 'schema.version', and 'schema.protocol.version'"></img></li><li>HWX Content-Encoded Schema Reference <img src="../../../../../html/images/iconInfo.png" alt="The content of the FlowFile contains a reference to a schema in the Schema Registry service. The reference is encoded as a single byte indicating the 'protocol version', followed by 8 bytes indicating the schema identifier, and finally 4 bytes indicating the schema version, as per the Hortonworks Schema Registry serializers and deserializers, found at https://github.com/hortonworks/registry" title="The content of the FlowFile contains
a reference to a schema in the Schema Registry service. The reference is encoded as a single byte indicating the 'protocol version', followed by 8 bytes indicating the schema identifier, and finally 4 bytes indicating the schema version, as per the Hortonworks Schema Registry serializers and deserializers, found at https://github.com/hortonworks/registry"></img></li></ul></td><td id="description">Specifies how to obtain the schema that is to be used for interpreting the data.</td></tr><tr><td id="name">Schema Registry</td><td id="default-value"></td><td id="allowable-values"><strong>Controller Service API: </strong><br/>SchemaRegistry<br/><strong>Implementations: </strong><a href="../../../nifi-registry-nar/1.3.0/org.apache.nifi.schemaregistry.services.AvroSchemaRegistry/index.html">AvroSchemaRegistry</a><br/><a href="../../../nifi-hwx-schema-registry-nar/1.3.0/org.apache.nifi.schemaregistry.hortonworks.HortonworksSchemaRegistry/index.html">HortonworksSchemaRegistry</a></td><td id="
description">Specifies the Controller Service to use for the Schema Registry</td></tr><tr><td id="name">Schema Name</td><td id="default-value">${schema.name}</td><td id="allowable-values"></td><td id="description">Specifies the name of the schema to lookup in the Schema Registry property<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Schema Text</td><td id="default-value">${avro.schema}</td><td id="allowable-values"></td><td id="description">The text of an Avro-formatted Schema<br/><strong>Supports Expression Language: true</strong></td></tr></table><h3>State management: </h3>This component does not store state.<h3>Restricted: </h3>This component is not restricted.</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>CSVReader</title>
+ <link rel="stylesheet" href="../../../../../css/component-usage.css" type="text/css"/>
+ </head>
+
+ <body>
+ <p>
+ The CSVReader Controller Service, expects input in such a way that the first line of a FlowFile specifies the name of
+ each column in the data. Following the first line, the rest of the FlowFile is expected to be valid CSV data from which
+ to form appropriate Records. The reader allows for customization of the CSV Format, such as which character should be used
+ to separate CSV fields, which character should be used for quoting and when to quote fields, which character should denote
+ a comment, etc.
+ </p>
+
+
+ <h2>Schemas and Type Coercion</h2>
+
+ <p>
+ When a record is parsed from incoming data, it is separated into fields. Each of these fields is then looked up against the
+ configured schema (by field name) in order to determine what the type of the data should be. If the field is not present in
+ the schema, that field is omitted from the Record. If the field is found in the schema, the data type of the received data
+ is compared against the data type specified in the schema. If the types match, the value of that field is used as-is. If the
+ schema indicates that the field should be of a different type, then the Controller Service will attempt to coerce the data
+ into the type specified by the schema. If the field cannot be coerced into the specified type, an Exception will be thrown.
+ </p>
+
+ <p>
+ The following rules apply when attempting to coerce a field value from one data type to another:
+ </p>
+
+ <ul>
+ <li>Any data type can be coerced into a String type.</li>
+ <li>Any numeric data type (Byte, Short, Int, Long, Float, Double) can be coerced into any other numeric data type.</li>
+ <li>Any numeric value can be coerced into a Date, Time, or Timestamp type, by assuming that the Long value is the number of
+ milliseconds since epoch (Midnight GMT, January 1, 1970).</li>
+ <li>A String value can be coerced into a Date, Time, or Timestamp type, if its format matches the configured "Date Format," "Time Format,"
+ or "Timestamp Format."</li>
+ <li>A String value can be coerced into a numeric value if the value is of the appropriate type. For example, the String value
+ <code>8</code> can be coerced into any numeric type. However, the String value <code>8.2</code> can be coerced into a Double or Float
+ type but not an Integer.</li>
+ <li>A String value of "true" or "false" (regardless of case) can be coerced into a Boolean value.</li>
+ <li>A String value that is not empty can be coerced into a Char type. If the String contains more than 1 character, the first character is used
+ and the rest of the characters are ignored.</li>
+ <li>Any "date/time" type (Date, Time, Timestamp) can be coerced into any other "date/time" type.</li>
+ <li>Any "date/time" type can be coerced into a Long type, representing the number of milliseconds since epoch (Midnight GMT, January 1, 1970).</li>
+ <li>Any "date/time" type can be coerced into a String. The format of the String is whatever DateFormat is configured for the corresponding
+ property (Date Format, Time Format, Timestamp Format property).</li>
+ </ul>
+
+ <p>
+ If none of the above rules apply when attempting to coerce a value from one data type to another, the coercion will fail and an Exception
+ will be thrown.
+ </p>
+
+
+
+ <h2>Examples</h2>
+
+ <p>
+ As an example, consider a FlowFile whose contents consists of the following:
+ </p>
+
+ <code>
+ id, name, balance, join_date, notes<br />
+ 1, John, 48.23, 04/03/2007 "Our very<br />
+first customer!"<br />
+ 2, Jane, 1245.89, 08/22/2009,<br />
+ 3, Frank Franklin, "48481.29", 04/04/2016,<br />
+ </code>
+
+ <p>
+ Additionally, let's consider that this Controller Service is configured with the Schema Registry pointing to an AvroSchemaRegistry and the schema is
+ configured as the following:
+ </p>
+
+ <code>
+ <pre>
+ {
+ "namespace": "nifi",
+ "name": "balances",
+ "type": "record",
+ "fields": [
+ { "name": "id", "type": "int" },
+ { "name": "name": "type": "string" },
+ { "name": "balance": "type": "double" },
+ { "name": "join_date", "type": {
+ "type": "int",
+ "logicalType": "date"
+ },
+ { "name": "notes": "type": "string" }
+ ]
+ }
+ </pre>
+ </code>
+
+ <p>
+ In the example above, we see that the 'join_date' column is a Date type. In order for the CSV Reader to be able to properly parse a value as a date,
+ we need to provide the reader with the date format to use. In this example, we would configure the Date Format property to be <code>MM/dd/yyyy</code>
+ to indicate that it is a two-digit month, followed by a two-digit day, followed by a four-digit year - each separated by a slash.
+ In this case, the result will be that this FlowFile consists of 3 different records. The first record will contain the following values:
+ </p>
+
+ <table>
+ <head>
+ <th>Field Name</th>
+ <th>Field Value</th>
+ </head>
+ <body>
+ <tr>
+ <td>id</td>
+ <td>1</td>
+ </tr>
+ <tr>
+ <td>name</td>
+ <td>John</td>
+ </tr>
+ <tr>
+ <td>balance</td>
+ <td>48.23</td>
+ </tr>
+ <tr>
+ <td>join_date</td>
+ <td>04/03/2007</td>
+ </tr>
+ <tr>
+ <td>notes</td>
+ <td>Our very<br />first customer!</td>
+ </tr>
+ </body>
+ </table>
+
+ <p>
+ The second record will contain the following values:
+ </p>
+
+ <table>
+ <head>
+ <th>Field Name</th>
+ <th>Field Value</th>
+ </head>
+ <body>
+ <tr>
+ <td>id</td>
+ <td>2</td>
+ </tr>
+ <tr>
+ <td>name</td>
+ <td>Jane</td>
+ </tr>
+ <tr>
+ <td>balance</td>
+ <td>1245.89</td>
+ </tr>
+ <tr>
+ <td>join_date</td>
+ <td>08/22/2009</td>
+ </tr>
+ <tr>
+ <td>notes</td>
+ <td></td>
+ </tr>
+ </body>
+ </table>
+
+ <p>
+ The third record will contain the following values:
+ </p>
+
+ <table>
+ <head>
+ <th>Field Name</th>
+ <th>Field Value</th>
+ </head>
+ <body>
+ <tr>
+ <td>id</td>
+ <td>3</td>
+ </tr>
+ <tr>
+ <td>name</td>
+ <td>Frank Franklin</td>
+ </tr>
+ <tr>
+ <td>balance</td>
+ <td>48481.29</td>
+ </tr>
+ <tr>
+ <td>join_date</td>
+ <td>04/04/2016</td>
+ </tr>
+ <tr>
+ <td>notes</td>
+ <td></td>
+ </tr>
+ </body>
+ </table>
+
+
+ </body>
+</html>
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+++ nifi/site/trunk/docs/nifi-docs/components/org.apache.nifi/nifi-record-serialization-services-nar/1.3.0/org.apache.nifi.csv.CSVReader/index.html Fri Jun 9 13:20:11 2017
@@ -0,0 +1 @@
+<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>CSVReader</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;">CSVReader</h1><h2>Description: </h2><p>Parses CSV-formatted data, returning each row in the CSV file as a separate record. This reader assumes that the first line in the content is the column names and all subsequent lines are the values. See Controller Service's Usage for further documentation.</p><p><a href="additionalDetails.html">Additional Details...</a></p><h3>Tags: </h3><p>csv, parse, record, row, reader, delimited, comma, separated, values</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 consi
dered 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>Schema Access Strategy</strong></td><td id="default-value">csv-header-derived</td><td id="allowable-values"><ul><li>Use 'Schema Name' Property <img src="../../../../../html/images/iconInfo.png" alt="The name of the Schema to use is specified by the 'Schema Name' Property. The value of this property is used to lookup the Schema in the configured Schema Registry service." title="The name of the Schema to use is specified by the 'Schema Name' Property. The value of this property is used to lookup the Schema in the configured Schema Registry service."></img></li><li>Use 'Schema Text' Property <img src="../../../../../html/images/iconInfo.png" alt="The text of the
Schema itself is specified by the 'Schema Text' Property. The value of this property must be a valid Avro Schema. If Expression Language is used, the value of the 'Schema Text' property must be valid after substituting the expressions." title="The text of the Schema itself is specified by the 'Schema Text' Property. The value of this property must be a valid Avro Schema. If Expression Language is used, the value of the 'Schema Text' property must be valid after substituting the expressions."></img></li><li>HWX Schema Reference Attributes <img src="../../../../../html/images/iconInfo.png" alt="The FlowFile contains 3 Attributes that will be used to lookup a Schema from the configured Schema Registry: 'schema.identifier', 'schema.version', and 'schema.protocol.version'" title="The FlowFile contains 3 Attributes that will be used to lookup a Schema from the configured Schema Registry: 'schema.identifier', 'schema.version', and 'schema.protocol.version'"></img></li><li>HWX Content-Encod
ed Schema Reference <img src="../../../../../html/images/iconInfo.png" alt="The content of the FlowFile contains a reference to a schema in the Schema Registry service. The reference is encoded as a single byte indicating the 'protocol version', followed by 8 bytes indicating the schema identifier, and finally 4 bytes indicating the schema version, as per the Hortonworks Schema Registry serializers and deserializers, found at https://github.com/hortonworks/registry" title="The content of the FlowFile contains a reference to a schema in the Schema Registry service. The reference is encoded as a single byte indicating the 'protocol version', followed by 8 bytes indicating the schema identifier, and finally 4 bytes indicating the schema version, as per the Hortonworks Schema Registry serializers and deserializers, found at https://github.com/hortonworks/registry"></img></li><li>Use String Fields From Header <img src="../../../../../html/images/iconInfo.png" alt="The first non-comment l
ine of the CSV file is a header line that contains the names of the columns. The schema will be derived by using the column names in the header and assuming that all columns are of type String." title="The first non-comment line of the CSV file is a header line that contains the names of the columns. The schema will be derived by using the column names in the header and assuming that all columns are of type String."></img></li></ul></td><td id="description">Specifies how to obtain the schema that is to be used for interpreting the data.</td></tr><tr><td id="name">Schema Registry</td><td id="default-value"></td><td id="allowable-values"><strong>Controller Service API: </strong><br/>SchemaRegistry<br/><strong>Implementations: </strong><a href="../../../nifi-registry-nar/1.3.0/org.apache.nifi.schemaregistry.services.AvroSchemaRegistry/index.html">AvroSchemaRegistry</a><br/><a href="../../../nifi-hwx-schema-registry-nar/1.3.0/org.apache.nifi.schemaregistry.hortonworks.HortonworksSchemaR
egistry/index.html">HortonworksSchemaRegistry</a></td><td id="description">Specifies the Controller Service to use for the Schema Registry</td></tr><tr><td id="name">Schema Name</td><td id="default-value">${schema.name}</td><td id="allowable-values"></td><td id="description">Specifies the name of the schema to lookup in the Schema Registry property<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Schema Text</td><td id="default-value">${avro.schema}</td><td id="allowable-values"></td><td id="description">The text of an Avro-formatted Schema<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Date Format</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Specifies the format to use when reading/writing Date fields. If not specified, Date fields will be assumed to be number of milliseconds since epoch (Midnight, Jan 1, 1970 GMT). If specified, the value must match the Java Simple Date For
mat (for example, MM/dd/yyyy for a two-digit month, followed by a two-digit day, followed by a four-digit year, all separated by '/' characters, as in 01/01/2017).</td></tr><tr><td id="name">Time Format</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Specifies the format to use when reading/writing Time fields. If not specified, Time fields will be assumed to be number of milliseconds since epoch (Midnight, Jan 1, 1970 GMT). If specified, the value must match the Java Simple Date Format (for example, HH:mm:ss for a two-digit hour in 24-hour format, followed by a two-digit minute, followed by a two-digit second, all separated by ':' characters, as in 18:04:15).</td></tr><tr><td id="name">Timestamp Format</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Specifies the format to use when reading/writing Timestamp fields. If not specified, Timestamp fields will be assumed to be number of milliseconds since epoch (Midn
ight, Jan 1, 1970 GMT). If specified, the value must match the Java Simple Date Format (for example, MM/dd/yyyy HH:mm:ss for a two-digit month, followed by a two-digit day, followed by a four-digit year, all separated by '/' characters; and then followed by a two-digit hour in 24-hour format, followed by a two-digit minute, followed by a two-digit second, all separated by ':' characters, as in 01/01/2017 18:04:15).</td></tr><tr><td id="name"><strong>CSV Format</strong></td><td id="default-value">custom</td><td id="allowable-values"><ul><li>Custom Format <img src="../../../../../html/images/iconInfo.png" alt="The format of the CSV is configured by using the properties of this Controller Service, such as Value Separator" title="The format of the CSV is configured by using the properties of this Controller Service, such as Value Separator"></img></li><li>RFC 4180 <img src="../../../../../html/images/iconInfo.png" alt="CSV data follows the RFC 4180 Specification defined at https://tools
.ietf.org/html/rfc4180" title="CSV data follows the RFC 4180 Specification defined at https://tools.ietf.org/html/rfc4180"></img></li><li>Microsoft Excel <img src="../../../../../html/images/iconInfo.png" alt="CSV data follows the format used by Microsoft Excel" title="CSV data follows the format used by Microsoft Excel"></img></li><li>Tab-Delimited <img src="../../../../../html/images/iconInfo.png" alt="CSV data is Tab-Delimited instead of Comma Delimited" title="CSV data is Tab-Delimited instead of Comma Delimited"></img></li><li>MySQL Format <img src="../../../../../html/images/iconInfo.png" alt="CSV data follows the format used by MySQL" title="CSV data follows the format used by MySQL"></img></li><li>Informix Unload <img src="../../../../../html/images/iconInfo.png" alt="The format used by Informix when issuing the UNLOAD TO file_name command" title="The format used by Informix when issuing the UNLOAD TO file_name command"></img></li><li>Informix Unload Escape Disabled <img src
="../../../../../html/images/iconInfo.png" alt="The format used by Informix when issuing the UNLOAD TO file_name command with escaping disabled" title="The format used by Informix when issuing the UNLOAD TO file_name command with escaping disabled"></img></li></ul></td><td id="description">Specifies which "format" the CSV data is in, or specifies if custom formatting should be used.</td></tr><tr><td id="name"><strong>Value Separator</strong></td><td id="default-value">,</td><td id="allowable-values"></td><td id="description">The character that is used to separate values/fields in a CSV Record</td></tr><tr><td id="name"><strong>Skip Header Line</strong></td><td id="default-value">false</td><td id="allowable-values"><ul><li>true</li><li>false</li></ul></td><td id="description">Specifies whether or not the first line of CSV should be considered a Header and skipped. If the Schema Access Strategy indicates that the columns must be defined in the header, then this property will be ignore
d, since the header must always be present and won't be processed as a Record. Otherwise, this property should be 'true' if the first non-comment line of CSV contains header information that needs to be ignored.</td></tr><tr><td id="name"><strong>Quote Character</strong></td><td id="default-value">"</td><td id="allowable-values"></td><td id="description">The character that is used to quote values so that escape characters do not have to be used</td></tr><tr><td id="name"><strong>Escape Character</strong></td><td id="default-value">\</td><td id="allowable-values"></td><td id="description">The character that is used to escape characters that would otherwise have a specific meaning to the CSV Parser.</td></tr><tr><td id="name">Comment Marker</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The character that is used to denote the start of a comment. Any line that begins with this comment will be ignored.</td></tr><tr><td id="name">Null String</td><td
id="default-value"></td><td id="allowable-values"></td><td id="description">Specifies a String that, if present as a value in the CSV, should be considered a null field instead of using the literal value.</td></tr><tr><td id="name"><strong>Trim Fields</strong></td><td id="default-value">true</td><td id="allowable-values"><ul><li>true</li><li>false</li></ul></td><td id="description">Whether or not white space should be removed from the beginning and end of fields</td></tr></table><h3>State management: </h3>This component does not store state.<h3>Restricted: </h3>This component is not restricted.</body></html>
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+++ nifi/site/trunk/docs/nifi-docs/components/org.apache.nifi/nifi-record-serialization-services-nar/1.3.0/org.apache.nifi.csv.CSVRecordSetWriter/index.html Fri Jun 9 13:20:11 2017
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+<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"></meta><title>CSVRecordSetWriter</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;">CSVRecordSetWriter</h1><h2>Description: </h2><p>Writes the contents of a RecordSet as CSV data. The first line written will be the column names (unless the 'Include Header Line' property is false). All subsequent lines will be the values corresponding to the record fields.</p><h3>Tags: </h3><p>csv, result, set, recordset, record, writer, serializer, row, tsv, tab, separated, delimited</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 va
lues, 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>Schema Write Strategy</strong></td><td id="default-value">schema-name</td><td id="allowable-values"><ul><li>Set 'schema.name' Attribute <img src="../../../../../html/images/iconInfo.png" alt="The FlowFile will be given an attribute named 'schema.name' and this attribute will indicate the name of the schema in the Schema Registry. Note that ifthe schema for a record is not obtained from a Schema Registry, then no attribute will be added." title="The FlowFile will be given an attribute named 'schema.name' and this attribute will indicate the name of the schema in the Schema Registry. Note that ifthe schema for a record is not obtained from a Schema Registry, then no attribute will be added."></img></li><li>Set 'avro
.schema' Attribute <img src="../../../../../html/images/iconInfo.png" alt="The FlowFile will be given an attribute named 'avro.schema' and this attribute will contain the Avro Schema that describes the records in the FlowFile. The contents of the FlowFile need not be Avro, but the text of the schema will be used." title="The FlowFile will be given an attribute named 'avro.schema' and this attribute will contain the Avro Schema that describes the records in the FlowFile. The contents of the FlowFile need not be Avro, but the text of the schema will be used."></img></li><li>HWX Schema Reference Attributes <img src="../../../../../html/images/iconInfo.png" alt="The FlowFile will be given a set of 3 attributes to describe the schema: 'schema.identifier', 'schema.version', and 'schema.protocol.version'. Note that if the schema for a record does not contain the necessary identifier and version, an Exception will be thrown when attempting to write the data." title="The FlowFile will be giv
en a set of 3 attributes to describe the schema: 'schema.identifier', 'schema.version', and 'schema.protocol.version'. Note that if the schema for a record does not contain the necessary identifier and version, an Exception will be thrown when attempting to write the data."></img></li><li>HWX Content-Encoded Schema Reference <img src="../../../../../html/images/iconInfo.png" alt="The content of the FlowFile will contain a reference to a schema in the Schema Registry service. The reference is encoded as a single byte indicating the 'protocol version', followed by 8 bytes indicating the schema identifier, and finally 4 bytes indicating the schema version, as per the Hortonworks Schema Registry serializers and deserializers, as found at https://github.com/hortonworks/registry. This will be prepended to each FlowFile. Note that if the schema for a record does not contain the necessary identifier and version, an Exception will be thrown when attempting to write the data." title="The cont
ent of the FlowFile will contain a reference to a schema in the Schema Registry service. The reference is encoded as a single byte indicating the 'protocol version', followed by 8 bytes indicating the schema identifier, and finally 4 bytes indicating the schema version, as per the Hortonworks Schema Registry serializers and deserializers, as found at https://github.com/hortonworks/registry. This will be prepended to each FlowFile. Note that if the schema for a record does not contain the necessary identifier and version, an Exception will be thrown when attempting to write the data."></img></li></ul></td><td id="description">Specifies how the schema for a Record should be added to the data.</td></tr><tr><td id="name"><strong>Schema Access Strategy</strong></td><td id="default-value">schema-name</td><td id="allowable-values"><ul><li>Use 'Schema Name' Property <img src="../../../../../html/images/iconInfo.png" alt="The name of the Schema to use is specified by the 'Schema Name' Proper
ty. The value of this property is used to lookup the Schema in the configured Schema Registry service." title="The name of the Schema to use is specified by the 'Schema Name' Property. The value of this property is used to lookup the Schema in the configured Schema Registry service."></img></li><li>Use 'Schema Text' Property <img src="../../../../../html/images/iconInfo.png" alt="The text of the Schema itself is specified by the 'Schema Text' Property. The value of this property must be a valid Avro Schema. If Expression Language is used, the value of the 'Schema Text' property must be valid after substituting the expressions." title="The text of the Schema itself is specified by the 'Schema Text' Property. The value of this property must be a valid Avro Schema. If Expression Language is used, the value of the 'Schema Text' property must be valid after substituting the expressions."></img></li><li>HWX Schema Reference Attributes <img src="../../../../../html/images/iconInfo.png" alt
="The FlowFile contains 3 Attributes that will be used to lookup a Schema from the configured Schema Registry: 'schema.identifier', 'schema.version', and 'schema.protocol.version'" title="The FlowFile contains 3 Attributes that will be used to lookup a Schema from the configured Schema Registry: 'schema.identifier', 'schema.version', and 'schema.protocol.version'"></img></li><li>HWX Content-Encoded Schema Reference <img src="../../../../../html/images/iconInfo.png" alt="The content of the FlowFile contains a reference to a schema in the Schema Registry service. The reference is encoded as a single byte indicating the 'protocol version', followed by 8 bytes indicating the schema identifier, and finally 4 bytes indicating the schema version, as per the Hortonworks Schema Registry serializers and deserializers, found at https://github.com/hortonworks/registry" title="The content of the FlowFile contains a reference to a schema in the Schema Registry service. The reference is encoded as
a single byte indicating the 'protocol version', followed by 8 bytes indicating the schema identifier, and finally 4 bytes indicating the schema version, as per the Hortonworks Schema Registry serializers and deserializers, found at https://github.com/hortonworks/registry"></img></li></ul></td><td id="description">Specifies how to obtain the schema that is to be used for interpreting the data.</td></tr><tr><td id="name">Schema Registry</td><td id="default-value"></td><td id="allowable-values"><strong>Controller Service API: </strong><br/>SchemaRegistry<br/><strong>Implementations: </strong><a href="../../../nifi-registry-nar/1.3.0/org.apache.nifi.schemaregistry.services.AvroSchemaRegistry/index.html">AvroSchemaRegistry</a><br/><a href="../../../nifi-hwx-schema-registry-nar/1.3.0/org.apache.nifi.schemaregistry.hortonworks.HortonworksSchemaRegistry/index.html">HortonworksSchemaRegistry</a></td><td id="description">Specifies the Controller Service to use for the Schema Registry</td></
tr><tr><td id="name">Schema Name</td><td id="default-value">${schema.name}</td><td id="allowable-values"></td><td id="description">Specifies the name of the schema to lookup in the Schema Registry property<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Schema Text</td><td id="default-value">${avro.schema}</td><td id="allowable-values"></td><td id="description">The text of an Avro-formatted Schema<br/><strong>Supports Expression Language: true</strong></td></tr><tr><td id="name">Date Format</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Specifies the format to use when reading/writing Date fields. If not specified, Date fields will be assumed to be number of milliseconds since epoch (Midnight, Jan 1, 1970 GMT). If specified, the value must match the Java Simple Date Format (for example, MM/dd/yyyy for a two-digit month, followed by a two-digit day, followed by a four-digit year, all separated by '/' characters,
as in 01/01/2017).</td></tr><tr><td id="name">Time Format</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Specifies the format to use when reading/writing Time fields. If not specified, Time fields will be assumed to be number of milliseconds since epoch (Midnight, Jan 1, 1970 GMT). If specified, the value must match the Java Simple Date Format (for example, HH:mm:ss for a two-digit hour in 24-hour format, followed by a two-digit minute, followed by a two-digit second, all separated by ':' characters, as in 18:04:15).</td></tr><tr><td id="name">Timestamp Format</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Specifies the format to use when reading/writing Timestamp fields. If not specified, Timestamp fields will be assumed to be number of milliseconds since epoch (Midnight, Jan 1, 1970 GMT). If specified, the value must match the Java Simple Date Format (for example, MM/dd/yyyy HH:mm:ss for a two-digit month, f
ollowed by a two-digit day, followed by a four-digit year, all separated by '/' characters; and then followed by a two-digit hour in 24-hour format, followed by a two-digit minute, followed by a two-digit second, all separated by ':' characters, as in 01/01/2017 18:04:15).</td></tr><tr><td id="name"><strong>CSV Format</strong></td><td id="default-value">custom</td><td id="allowable-values"><ul><li>Custom Format <img src="../../../../../html/images/iconInfo.png" alt="The format of the CSV is configured by using the properties of this Controller Service, such as Value Separator" title="The format of the CSV is configured by using the properties of this Controller Service, such as Value Separator"></img></li><li>RFC 4180 <img src="../../../../../html/images/iconInfo.png" alt="CSV data follows the RFC 4180 Specification defined at https://tools.ietf.org/html/rfc4180" title="CSV data follows the RFC 4180 Specification defined at https://tools.ietf.org/html/rfc4180"></img></li><li>Microso
ft Excel <img src="../../../../../html/images/iconInfo.png" alt="CSV data follows the format used by Microsoft Excel" title="CSV data follows the format used by Microsoft Excel"></img></li><li>Tab-Delimited <img src="../../../../../html/images/iconInfo.png" alt="CSV data is Tab-Delimited instead of Comma Delimited" title="CSV data is Tab-Delimited instead of Comma Delimited"></img></li><li>MySQL Format <img src="../../../../../html/images/iconInfo.png" alt="CSV data follows the format used by MySQL" title="CSV data follows the format used by MySQL"></img></li><li>Informix Unload <img src="../../../../../html/images/iconInfo.png" alt="The format used by Informix when issuing the UNLOAD TO file_name command" title="The format used by Informix when issuing the UNLOAD TO file_name command"></img></li><li>Informix Unload Escape Disabled <img src="../../../../../html/images/iconInfo.png" alt="The format used by Informix when issuing the UNLOAD TO file_name command with escaping disabled"
title="The format used by Informix when issuing the UNLOAD TO file_name command with escaping disabled"></img></li></ul></td><td id="description">Specifies which "format" the CSV data is in, or specifies if custom formatting should be used.</td></tr><tr><td id="name"><strong>Value Separator</strong></td><td id="default-value">,</td><td id="allowable-values"></td><td id="description">The character that is used to separate values/fields in a CSV Record</td></tr><tr><td id="name"><strong>Include Header Line</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 the CSV column names should be written out as the first line.</td></tr><tr><td id="name"><strong>Quote Character</strong></td><td id="default-value">"</td><td id="allowable-values"></td><td id="description">The character that is used to quote values so that escape characters do not have to be used</td></tr><tr><td id="name"><st
rong>Escape Character</strong></td><td id="default-value">\</td><td id="allowable-values"></td><td id="description">The character that is used to escape characters that would otherwise have a specific meaning to the CSV Parser.</td></tr><tr><td id="name">Comment Marker</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">The character that is used to denote the start of a comment. Any line that begins with this comment will be ignored.</td></tr><tr><td id="name">Null String</td><td id="default-value"></td><td id="allowable-values"></td><td id="description">Specifies a String that, if present as a value in the CSV, should be considered a null field instead of using the literal value.</td></tr><tr><td id="name"><strong>Trim Fields</strong></td><td id="default-value">true</td><td id="allowable-values"><ul><li>true</li><li>false</li></ul></td><td id="description">Whether or not white space should be removed from the beginning and end of fields</td></tr><tr
><td id="name"><strong>Quote Mode</strong></td><td id="default-value">MINIMAL</td><td id="allowable-values"><ul><li>Quote All Values <img src="../../../../../html/images/iconInfo.png" alt="All values will be quoted using the configured quote character." title="All values will be quoted using the configured quote character."></img></li><li>Quote Minimal <img src="../../../../../html/images/iconInfo.png" alt="Values will be quoted only if they are contain special characters such as newline characters or field separators." title="Values will be quoted only if they are contain special characters such as newline characters or field separators."></img></li><li>Quote Non-Numeric Values <img src="../../../../../html/images/iconInfo.png" alt="Values will be quoted unless the value is a number." title="Values will be quoted unless the value is a number."></img></li><li>Do Not Quote Values <img src="../../../../../html/images/iconInfo.png" alt="Values will not be quoted. Instead, all special c
haracters will be escaped using the configured escape character." title="Values will not be quoted. Instead, all special characters will be escaped using the configured escape character."></img></li></ul></td><td id="description">Specifies how fields should be quoted when they are written</td></tr><tr><td id="name"><strong>Record Separator</strong></td><td id="default-value">\n</td><td id="allowable-values"></td><td id="description">Specifies the characters to use in order to separate CSV Records</td></tr><tr><td id="name"><strong>Include Trailing Delimiter</strong></td><td id="default-value">false</td><td id="allowable-values"><ul><li>true</li><li>false</li></ul></td><td id="description">If true, a trailing delimiter will be added to each CSV Record that is written. If false, the trailing delimiter will be omitted.</td></tr></table><h3>State management: </h3>This component does not store state.<h3>Restricted: </h3>This component is not restricted.</body></html>
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