Nifi split attribute. Any other properties (not in bold) are considered optional.
Nifi split attribute I want to split this "filename" attribute with value "ABC_gh_1245_ty. Apr 26, 2018 · I created a workflow in NiFi 1. nifi | nifi-poi-nar Description This processor splits a multi sheet Microsoft Excel spreadsheet into multiple Microsoft Excel spreadsheets where each sheet from the original file is converted to an individual spreadsheet in its own flow file. Example We suppose that your attribute has a data like "12|13|14". Oct 9, 2020 · In NiFi, I'm trying to utilise the SplitRecord processor to change incoming XML files to Json. Jun 23, 2023 · How to split the attributes into a nested JSON content? Asked 1 year, 9 months ago Modified 1 year, 9 months ago Viewed 202 times SplitRecord Description: Splits up an input FlowFile that is in a record-oriented data format into multiple smaller FlowFiles Tags: split, generic, schema, json, csv, avro, log, logs, freeform, text Properties: In the list below, the names of required properties appear in bold. The Content is the User Data itself. Flow with attribute or attribute value and missing values to error, and load into a different output path. A FlowFile is a data record, which consists of a pointer to its content (payload) and attributes to support the content, that is associated with one or more provenance events. The content is the actual data or the payload of Dec 21, 2022 · This recipe explains how to read data in JSON format add attributes and convert it into CSV data and write to HDFS using NiFi. It is recommended that the Processor be configured with only a single incoming connection, as Group of FlowFiles will not be created from FlowFiles in different connections. The structure of the XML file is as follows: Jun 4, 2019 · l have a 20GB XML file in my local system, I want to split the data into multiple chunks and also I want to remove specific attributes from that file. It will use \r, \n, or \r\n as the end of a line. SplitExcel 2. You need to come up with a regular expression that uses capture groups to capture the parts you are interested in. Now I want to Apr 13, 2019 · The flowfile generated from this has an attribute (filename). There are multiple JSON objects present i SplitText 2. Each output split file will contain no more than the configured number of lines or bytes. Jun 14, 2016 · The question is regarding splitting the attributes of the FlowFile. 5. For example, $ {filename} will return the value of the filename attribute. If both Line Split Count and Maximum Fragment Size are specified, the split occurs at whichever limit is reached first. SplitText Description: Splits a text file into multiple smaller text files on line boundaries limited by maximum number of lines or total size of fragment. After splitting the file into separate <Transaction> elements, I want to read out an attribute's value and afterwards react by this value. 6. This processor updates the mime. count attribute to the flowfile which is array size. * Then use EvaluateJsonProcessor to extract PersonID value as a attribute. It may be better to use something smaller for your correlation attribute value in the MergeContent processor. You could use the ExtractAvroMetadata processor before the MergeContent processor. A FlowFile is made up of two parts: Attributes and Content. apache. Your seperator must be "\|" because it's a regex. ExtractText would be used to parse each line and extract parts of the line into flow file attributes. 1 , rw. Currently this processor is only capable of processing . csv" by "_" into multiple attributes SplitXml Description: Splits an XML File into multiple separate FlowFiles, each comprising a child or descendant of the original root element Tags: xml, split Properties: In the list below, the names of required properties appear in bold. And then your split attributes name should be like "Name1, Name2, Name3" if your attribute name count is not equal your spliting data count, processor will has an error. Sep 19, 2018 · How to split file name with delimeter '_' and stored values in variable using Nifi? 5 You are having array of json message (s) (ex: []) and You need to split the array of json into individual flowfiles using SplitJson processor with split expression as $. In its most basic form, the Expression can consist of just an attribute name. How to split json array into individual records using SplitJson processor? Where can I check examples of "JsonPath Expression" for "SplitJson processor" I checked documentation for "SplitJson"- but it not covers JsonPath Expressions. ReplaceText and ReplaceTextWithMapping both work on the content of the FlowFile, not the attributes. Flow: As an example, to alter the standard "filename" attribute so that it has ". NOTE: this processor . type and record. SplitContent 2. Aug 11, 2016 · Hi , As part of requirement need to merge multiple flows using merge content processor , which needs to merged using two attributes , as suggested above I have used update Attribute before merge content processor and created a new attribute and then using this in correlation attribute in merge content. txt" appended to the end of it, add a new property and make the property name "filename" (to reference the desired attribute), and as the value, use the NiFi Expression Language statement shown below: Nov 16, 2017 · You can also create a JsonRecordSetWriter that inherits the schema (as of NiFi 1. SplitJson Description: Splits a JSON File into multiple, separate FlowFiles for an array element specified by a JsonPath expression. The table also indicates any default values. Attributes are key-value pairs that are associated with the User Data. If the specified JsonPath is not found or does not evaluate to an array element Feb 27, 2018 · Using Extract Text processor, I have been able to convert a HTML table into an attribute list 'rw' (shown in picture) each rw. May 29, 2019 · You can use SplitJson processor to split the array ($. Each generated FlowFile is comprised of an element of the specified array and transferred to relationship 'split,' with the original file transferred to the 'original' relationship. The flowfile generated from this has an attribute (filename). So you could use the pattern (. Dec 21, 2022 · Apache NiFi — Splitting FlowFiles In this blog post we are going to explore different Apache NiFi processor available for splitting the input flowfile depending upon the requirement. , data that the user brings into NiFi for processing and distribution) is referred to as a FlowFile. *) to extract the entire text into your attribute named att1. id, configured as follows: Jan 26, 2018 · How to split the csv files into multiple files based on attribute name in Nifi Labels: Apache NiFi yogesh_singh Sep 18, 2025 · Structure of a NiFi Expression The NiFi Expression Language always begins with the start delimiter $ { and ends with the end delimiter }. *) into individual flowfile then split json processor adds fragment. The table also indicates any default values, and whether Jun 8, 2017 · I have come to a stage wherein I have converted above flow file in JSON and split the json file and I have captured abc|xyz|pqr in one attribute, I request help on how I can split them further into Individual records in Nifi so that I can insert them in HBase. My original XML looks like this: <?xml version="1. Sep 18, 2025 · FlowFile: Each piece of "User Data" (i. Need help in filtering the data when source misses to send data for json attribute. Discover a step-by-step guide on how to split values in attributes of flowfiles using Apache NiFi, enhancing your data processing efficiency. Mar 22, 2019 · Example Input is below: I need to split JSON objects present in a JSON array into individual JSON files using Apache NiFi and publish it to a Kafka Topic. Oct 16, 2019 · I need help splitting data using RouteOnAttribute to differentiate missing event_id attribute or attribute_value into two different flows. nifi | nifi-standard-nar Description Splits a text file into multiple smaller text files on line boundaries limited by maximum number of lines or total size of fragment. Then in PartitionRecord you would create two user-defined properties, say record. Any other properties (not in bold) are considered optional. Dec 21, 2022 · We would like to show you a description here but the site won’t allow us. ---more Splits a JSON File into multiple, separate FlowFiles for an array element specified by a JsonPath expression. Jan 17, 2017 · SplitText with a Line Count of 1 is generally the approach to split a text file line-by-line. Is there a way in NiFi that I can split based on a specific text sequence? Oct 20, 2016 · Split a single NiFi flowfile into multiple flowfiles, eventually to insert the contents (after extracting the contents from the flowfile) of each of the flowfiles as a separate row in a Hive table. 0" encoding="UTF-8"?> <Log> <Transaction Sep 18, 2025 · FlowFiles are at the heart of NiFi and its flow-based design. 4. how will I achieve using Nifi? Sep 18, 2025 · FlowFile: Each piece of "User Data" (i. Between the start and end delimiters is the text of the Expression itself. nifi | nifi-standard-nar Description Splits up an input FlowFile that is in a record-oriented data format into multiple smaller FlowFiles Tags avro, csv, freeform, generic, json, log, logs, schema, split, text Input Requirement REQUIRED Supports Sensitive Dynamic Properties false Mar 31, 2017 · I currently have a flow in NiFi that receives flowfiles and routes them based on topic, however every flowfile received in the flow is a bash that contains multiple messages and the number of lines that each message contains can vary so I cannot split by number of lines. SplitContent Description: Splits incoming FlowFiles by a specified byte sequence Tags: content, split, binary Properties: In the list below, the names of required properties appear in bold. e. If the first line of a Nov 18, 2020 · You are using expression langauge to get a substring in your ExtractText, which is incorrect. Apache NiFi is open-source software for automating and managing the data flow between systems in most big data scenarios. 0 that reads a XML file from HDFS. The content portion of the FlowFile represents the data on which to operate. Oct 15, 2019 · I am currently working to consume data using Nifi related to tealium event stream and load into HDFS. nifi | nifi-standard-nar Description Splits incoming FlowFiles by a specified byte sequence Tags binary, content, split Input Requirement REQUIRED Supports Sensitive Dynamic Properties false May 22, 2018 · Split JSON into two individual JSON objects using Nifi Asked 7 years, 5 months ago Modified 7 years, 5 months ago Viewed 6k times SplitRecord Description: Splits up an input FlowFile that is in a record-oriented data format into multiple smaller FlowFiles Tags: split, generic, schema, json, csv, avro, log, logs, freeform, text Properties: In the list below, the names of required properties appear in bold. 0 Bundle org. csv" by "_" into multiple attributes Jun 14, 2016 · Solved: I've worked out how to pull down information from online json and parse the basics into attributes and - 136223 Oct 21, 2024 · All data in Apache NiFi is represented by an abstraction called a FlowFile. 0). type attribute as appropriate. A FlowFile is comprised of two major pieces: content and attributes. You could then use the UpdateAttribute processor to update that attribute with the same Expression Language statement you Aug 3, 2017 · Hi, SplitJson processor accept as an input Json array of objects. Jan 4, 2019 · I have a file which i get using the GetFile Processor. 0) or uses the same one (prior to NiFi 1. The Dynamic Properties of ExtractText populate an attribute based on a RegEx pattern. I am assuming that your "avro_schema" attribute nay be fairly large. xlsx (XSSF 2007 OOXML file format) Excel documents and not MergeContent Description: Merges a Group of FlowFiles together based on a user-defined strategy and packages them into a single FlowFile. If both Line Split Count and Maximum Fragment Size are specified, the split occurs at whichever limit The merged FlowFile, depending on configuration, may have different attributes however. The table also indicates any default values, and whether SplitRecord 2. The attributes are key/value pairs that act as the metadata for the FlowFile, such as the FlowFile filename. 2, represents a row of a table of unknown size. 4dhmbgx6t5gnvrjp3cwil9rksfzpgalovgcfunbylv6