@wert_1311 ,   Any luck with this? Found the root cause?   André ... View more

@yagoaparecidoti ,   Can you try importing your cluster certificate into your browser and see if the error stops? Make sure the certificate is marked as trusted so that the padlock in the browser is green or doesn't show any alerts.   Another thing you can try is to add the following user extensions to your keytool command when creating the self-signed certificate. -ext KU=digitalSignature,nonRepudiation,keyEncipherment,dataEncipherment   Please keep me posted.   Cheers, André ... View more

@yagoaparecidoti ,   Is there a correlation between the times when these messages appear in the log and your browser activity? If all Cloudera Manager tabs in the browser are closed does the error continue to happen?   Cheers, André   ... View more

@spserd ,   Are the NiFi 1.11 and 1.15 clusters different clusters or the same cluster that you upgraded? Is the application using the same keystore to connect to both clusters? Would you be able to share the part of your application code where you construct your NiFiSource?   Cheers, André   ... View more

@Sachin    Here's another attempt at this (hopefully the last one 🙂 😞   I created the attached example that gets a flowfile and aattribute INDEX as you described above. It then uses an UpdateAttribute to convert the INDEX attribute into a FILTER that we can use in the QueryRecord processor.   The QueryRecord process uses a fixed schema that has 100 columns. It's ok if your CSV has less columns. If the CSV can have more than 100 columns you need to update the schema to the maximum of columns you expect to receive in any CSV.   The output is a flowfile with the exact columns that were specified in the INDEX attribute.   Hope this helps.   Cheers, Andre   ... View more

@CookieCream ,   Try these steps below after you delete your current nifi directory: wget "https://downloads.apache.org/nifi/1.15.3/nifi-1.15.3-bin.tar.gz" -P . tar -zxvf ./nifi-1.15.3-bin.tar.gz cd nifi-1.15.3 ./bin/nifi.sh set-single-user-credentials admin supersecret1 ./bin/nifi.sh start   I just tested this on my laptop and it works without problems.   Cheers, André   ... View more

@sachin_32 ,   Here one different attempt. You can send your CSV flowfile to a ReplaceText processor with the following configuration: The Search Value is the following regular expression: (?s)^([^,\n]*),([^,\n]*),([^,\n]*),([^,\n]*),([^,\n]*)(.*$) And the Replacement Value is: $1,$2,$3,$4,col_a$6   Each capture group ([^,\n]*) will match the name of one column. If you want to keep the name of that column you just replace it with $x, where x is the position of the column. If you want to replace the column with another name, e.g. col_a, you just type the name of the new column name in the replacement instead.   The last capture group (.*), will match the remaining of the first line. This way you don't need to match every single column, only the ones up to the position you want to replace.   As an example, for this input: A,B,C,D,A 1,2,3,4,5 2,3,4,5,6 The above replacement will generate this output: A,B,C,D,col_a 1,2,3,4,5 2,3,4,5,6   HTH, André   ... View more