Cloudera Community
Announcements
Now Live: Explore expert insights and technical deep dives on the new Cloudera Community Blogs — Read the Announcement
MattWho
user rank
user rank
Master Mentor

Re: Nifi Cannot swap in FlowFiles from location

by Master Mentor Master Mentor in Support Questions
‎09-14-2020 08:06 AM
1 Kudo
‎09-14-2020 08:06 AM
1 Kudo
@dhhan74    The attached screenshot shows your running version as Apache NiFi 1.9.0. There is a known issue in that released that results in the ERROR condition you have encountered: https://issues.apache.org/jira/browse/NIFI-6285   This issue was addressed as of Apache NiFi 1.10.   Hope this helps, Matt ... View more

Re: Nifi Provenance, Flowfiles and Processor State...

by Explorer in Support Questions
‎09-14-2020 12:49 AM
‎09-14-2020 12:49 AM
I have put detailed solution description here   You should be able to start NiFi & its registry with this docker compose file. It persists several folders on the local disk & rest will be persisted in the docker volume called 'nifi_data' so that it retains the previous state of other folders like content_repository, database_repository, flowfile_repository, provenance_repository, state  and work. ... View more

Re: Connecting to TCP port in NiFi

by Explorer in Support Questions
‎09-05-2020 02:04 AM
‎09-05-2020 02:04 AM
Can we read data from Modbus TCP/IP protocol with Apache NiFi? ... View more

Re: Nifi Admin Access.

by Frequent Visitor in Support Questions
‎09-03-2020 06:34 AM
‎09-03-2020 06:34 AM
I m new bee to nifi. I followed the below link and did the configuration and username password screen appears. But i dont know what the username and password is. Can you help me with it? https://mintopsblog.com/2017/11/01/apache-nifi-configuration/ ... View more

Re: Integrate NIFI , NIFI Registry

by Master Mentor Master Mentor in Support Questions
‎08-14-2020 06:37 AM
‎08-14-2020 06:37 AM
@DivyaKaki    The exception implies that the complete trust chain does not exist to facilitate a successful mutual TLS handshake between this NiFI and the target NiFi-Registry.   NiFi uses the keystore and truststore configured in its nifi.properties and NiFi-Registry uses the keystore and truststore configured in its nifi-registry.properties files. Openssl can be used to public certificates for the complete trust chain: openssl s_client -connect <nifi-registry-hostname>:<port> -showcerts   openssl s_client -connect <nifi-hostname>:<port> -showcerts for each public cert you will see: -----BEGIN CERTIFICATE----- MIIESjCCAzKgAwIBAgINAeO0mqGNiqmBJWlQuDANBgkqhkiG9w0BAQsFADBMMSAw HgYDVQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMjETMBEGA1UEChMKR2xvYmFs U2lnbjETMBEGA1UEAxMKR2xvYmFsU2lnbjAeFw0xNzA2MTUwMDAwNDJaFw0yMTEy MTUwMDAwNDJaMEIxCzAJBgNVBAYTAlVTMR4wHAYDVQQKExVHb29nbGUgVHJ1c3Qg U2VydmljZXMxEzARBgNVBAMTCkdUUyBDQSAxTzEwggEiMA0GCSqGSIb3DQEBAQUA A4IBDwAwggEKAoIBAQDQGM9F1IvN05zkQO9+tN1pIRvJzzyOTHW5DzEZhD2ePCnv UA0Qk28FgICfKqC9EksC4T2fWBYk/jCfC3R3VZMdS/dN4ZKCEPZRrAzDsiKUDzRr mBBJ5wudgzndIMYcLe/RGGFl5yODIKgjEv/SJH/UL+dEaltN11BmsK+eQmMF++Ac xGNhr59qM/9il71I2dN8FGfcddwuaej4bXhp0LcQBbjxMcI7JP0aM3T4I+DsaxmK FsbjzaTNC9uzpFlgOIg7rR25xoynUxv8vNmkq7zdPGHXkxWY7oG9j+JkRyBABk7X rJfoucBZEqFJJSPk7XA0LKW0Y3z5oz2D0c1tJKwHAgMBAAGjggEzMIIBLzAOBgNV HQ8BAf8EBAMCAYYwHQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMBIGA1Ud EwEB/wQIMAYBAf8CAQAwHQYDVR0OBBYEFJjR+G4Q68+b7GCfGJAboOt9Cf0rMB8G A1UdIwQYMBaAFJviB1dnHB7AagbeWbSaLd/cGYYuMDUGCCsGAQUFBwEBBCkwJzAl BggrBgEFBQcwAYYZaHR0cDovL29jc3AucGtpLmdvb2cvZ3NyMjAyBgNVHR8EKzAp MCegJaAjhiFodHRwOi8vY3JsLnBraS5nb29nL2dzcjIvZ3NyMi5jcmwwPwYDVR0g BDgwNjA0BgZngQwBAgIwKjAoBggrBgEFBQcCARYcaHR0cHM6Ly9wa2kuZ29vZy9y ZXBvc2l0b3J5LzANBgkqhkiG9w0BAQsFAAOCAQEAGoA+Nnn78y6pRjd9XlQWNa7H TgiZ/r3RNGkmUmYHPQq6Scti9PEajvwRT2iWTHQr02fesqOqBY2ETUwgZQ+lltoN FvhsO9tvBCOIazpswWC9aJ9xju4tWDQH8NVU6YZZ/XteDSGU9YzJqPjY8q3MDxrz mqepBCf5o8mw/wJ4a2G6xzUr6Fb6T8McDO22PLRL6u3M4Tzs3A2M1j6bykJYi8wW IRdAvKLWZu/axBVbzYmqmwkm5zLSDW5nIAJbELCQCZwMH56t2Dvqofxs6BBcCFIZ USpxu6x6td0V7SvJCCosirSmIatj/9dSSVDQibet8q/7UK4v4ZUN80atnZz1yg== -----END CERTIFICATE----- Above is just example public cert from openssl command against google.com:443 You will need to make sure that every certificate in the chain when run agains NiFi UI is added to the truststore on NiFi-Registry and vice versa. You'll need to restart NiFi and NiFi-Registry before changes to your keystore or truststore files will be read in. Hope this helps, Matt ... View more

Re: NiFi shutting down abruptly

by Master Mentor Master Mentor in Support Questions
‎08-14-2020 06:11 AM
‎08-14-2020 06:11 AM
@Gubbi    Since you comment that NiFi starts fine when you remove the flow.xml.gz, this points at an issue with loading /reading the flow.xml.gz file.  I would suggest opening you flow.xml.gz in an xml editor and make sure it is valid.  When NiFi starts it loads the flow.xml in to heap memory.  From then on all changes made within the UI are made in memory and a flow.xml.gz is written to disk.  I would be looking for XML special characters (http://xml.silmaril.ie/specials.html) that were not escaped in the XML that written out to the flow.xml.gz.  Manually remove or correct the invalid flow.xml.gz may work. You may get lucky going back and trying multiple archived copies of flow.xml.gz files.  Perhaps one still exist prior to the config change that was made that introduced the issue? Note: Be aware that starting NiFi without the flow.xml.gz will result in loss of all queued FlowFiles. Hope this helps, Matt ... View more

Re: why nifi content repository doesn't cleanup it...

by Master Mentor Master Mentor in Support Questions
‎08-14-2020 05:51 AM
1 Kudo
‎08-14-2020 05:51 AM
1 Kudo
@NY    There are several bugs related content repository failing to clean-up under specific conditions. Based on your description and version of HDF, the most likely bugs are the following: https://issues.apache.org/jira/browse/NIFI-6846 https://issues.apache.org/jira/browse/NIFI-5771   Both of the above would result in cleanup occurring only on NiFi Restart once the condition occurs. If you are using the VolatileFlowFileRepository implementation which is uncommon, you may be hitting: https://issues.apache.org/jira/browse/NIFI-6236 While you are not hitting below jira because it was only introduced in Apache NIFi 1.9.1 (HDF3.4.0 - removed) and fixed in HDF 3.4.1, sharing for completeness here: https://issues.apache.org/jira/browse/NIFI-6150 All the above are addressed, except NIFI-6846 are addressed in HDF 3.4.1 (Apache NiFi 1.9.2). All above are fixed in HDF 3.5.1 (Apache NiFi 1.11.4). I recommend upgrading to HDF 3.5.x (latest) Hope this helps, Matt ... View more

Re: Ranger Group autharization not working for nif...

by Expert Contributor in Support Questions
‎07-23-2020 05:23 AM
‎07-23-2020 05:23 AM
@MattWho  Thank you Sir .It worked perfectly .   Regards Bharad ... View more

Re: Problem login for first time in Nifi

by Reader in Support Questions
‎07-22-2020 04:37 AM
‎07-22-2020 04:37 AM
please can you provide me the doc about how to create LDAP auth for user and password nifi ... View more

Re: Nifi - How to use getHDFSFileInfo for the next...

by Explorer in Support Questions
‎07-15-2020 01:38 AM
‎07-15-2020 01:38 AM
@MattWho    Your guide was really helpful and it worked well. However, I think there is some problems if "Full Path" has deeper hierarchy.  Firstly, I set full path like below. aa/bb/cc/dd/ It created only one flow file which was "dd", of course its type was a directory. I removed "dd" and set a dir filter and file filter to get files only I wanted. After changed full path from "aa/bb/cc/dd" to "aa/bb/cc", it made all flow file information under the cc directory.   Thanks for your advice.  Cheers. ... View more
Contact Me
Online
Online
Last Visited
‎02-07-2026 12:28 AM
Community Statistics
Member Since ‎07-30-2019 10:41 AM
Last Visited ‎02-07-2026 12:28 AM
Posts 3,436
Kudos received 1629