apache-nifi Questions
2
Solved
My Question in regarding Apache Flink framework.
Is there any way to support more than one streaming source like kafka and twitter in single flink job? Is there any work around.Can we process more...
Explode asked 6/11, 2016 at 17:35
2
Solved
In Apache NiFi, I created a controller within the appropriate scope at that time. Now I want to use the same controller in other places. My question is can I change the scope to the current process...
Ayesha asked 17/3, 2019 at 14:15
2
I have two payloads and want to merge them into single JSON object (streaming join). At few places people are suggesting to use AttributesToJSON, but as one of the JSON does not have fix set of att...
Genu asked 12/3, 2019 at 9:45
2
Solved
Apache-Nifi v-1.7.1 was running fine on AWS Centos machine but now on restart it thrown following error: (below content of /nifi-app.log)
org.apache.nifi:nifi-standard-nar:1.7.1 || ./work/nar/ext...
Verein asked 21/1, 2019 at 10:24
2
Output from $NIFI_HOME/logs/nifi-app.log:
2016-10-26 12:45:13,304 ERROR [Timer-Driven Process Thread-6] o.apache.nifi.processors.standard.PutSQL
org.apache.nifi.processor.exception.ProcessExceptio...
Fusiform asked 26/10, 2016 at 18:5
1
Solved
My current understanding is that NiFi processor properties are specific to that processor. So adding a new property to a processor will only be visible within that processor and not be passed on to...
Regina asked 19/1, 2019 at 18:23
2
I have a few Nifi process groups which I want to run integration tests on before promoting to production. The issue is that I can't seem to find any documentation on how to do so.
Data Provenance ...
System asked 13/8, 2018 at 22:42
2
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Before posting this question about Apache NiFi InvokeHTTP I have gone through all other questions and their answersbut I am still unsure the best flow I should have. My situation is as below:
1) F...
Penalty asked 18/12, 2018 at 11:2
1
I am new to the NIFI process where in my current job, I have notify and wait process. could someone help me to understand this flow
On what basis the Notify work. in my case we have 4 schema fil...
Agram asked 14/3, 2018 at 11:7
2
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I am trying to understand the differences between Apache NiFi, Apache Airflow, and Apache Falcon in the context of data pipeline management. Here is my use case:
Hadoop-based architecture: T...
Deerhound asked 12/11, 2018 at 6:31
1
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I have a flow that creates some new attributes / content. I want to take an attribute from the flow files, and add it into the JSON content of the file.
I can use AttributesToJSON, but that just ...
Aideaidedecamp asked 7/11, 2018 at 21:59
4
I'm new to nifi and am trying to understand (since it looks many GUI based) if there is a way to automate scale up and down on Nifi and how one would take an xml Nifi template and deploy it to a cl...
Lyso asked 18/2, 2017 at 4:49
1
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I'm trying to extract a value from JSON to a flowfile-attribute. When I run the EvaluateJsonPath processor I get an error stating
"Unable to get a scalar value for expression $..fields.storyBoard...
Boarish asked 23/10, 2018 at 3:20
3
Solved
I have a CSV file in which some column name have white spaces in it and some column names are without the white space between characters. I want to remove the white spaces from all the header names...
Magnific asked 20/9, 2018 at 15:25
1
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I moved a flow that was working on a single node NiFi to a 3 nodes NiFi cluster, and suddenly a wait processor that makes use of the DistributedMapCache doesn't works as expected, this means that w...
Maladminister asked 6/9, 2018 at 7:55
1
Solved
Could somebody tell me how I can add x number of days to a date attribute that is in the format ("yyyy-MM-dd") in Nifi.
Sarracenia asked 6/8, 2018 at 16:38
1
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I have NiFi running on a test environment and would like it to automatically start all processors as the last step of deployment.
Do I need to parse all the processor ids and hit the /nifi-api/pro...
Thereby asked 6/8, 2018 at 11:17
1
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I am trying to access a WCF service from a REST client. I am sending a POST request from a REST client to a WCF service. For your reference, the detail is as follows.
The Service Contract definit...
Annihilation asked 24/8, 2016 at 6:38
3
I am trying to explore Apache NiFi. So far haven't seen any ways to version control flows.
Is there a way to version control flows when multiple users are trying to develop in the same instance? ...
Chancy asked 30/1, 2017 at 19:37
2
In NiFi,
I have a JSON data coming in, and I am using SplitJson and EvaluateJson to store the required components of the Json data in my own variable.
How can I implement an if-elseif-else condit...
Anaphora asked 20/2, 2017 at 21:13
2
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User guide https://nifi.apache.org/docs/nifi-docs/html/user-guide.html has the below details on prioritizers, could you please help me understand how these are different and provide any real time e...
Inutility asked 5/4, 2018 at 14:48
1
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After doing my best to find previous questions and examples relevant to this question, and still not finding the answers that I'm looking for I figured that I would submit a question myself.
Execu...
Tracee asked 24/3, 2018 at 17:54
1
I would like to know what the proper avro schema would be for some json to avro conversion that is in this format:
{"entryDate": "2018-01-26T12:00:40.930"}
My schema:
{
"type" : "record",
"na...
Incongruity asked 26/1, 2018 at 17:18
1
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I got myself into a problem where the NIFI service just refuse to start up. I monitored the nifi-app.log and found it was OutOfMemory error. I increased the memory in bootstap.conf file. But the er...
Iphlgenia asked 19/12, 2017 at 19:31
1
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Is there a processor / flow I am not considering when wanting to convert JsonMessages merged together (using MergeContent) into a JsonArray? I wanted to try to build JsonArrays from Multiple files ...
Need asked 27/10, 2017 at 16:21
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