Thank you sir. I was able to generate more users/client certificates by specifying multiple "-C CN=user1, OU=nifi" in addition to the initial command i have. ... View more

@linssab ,   You are probably running into this issue described in NIFI-9241, which has been fixed on NiFi 1.15.   Cheers, André   ... View more

@Reddy3  There is not enough history or detail to understand what lead to the corruption of your NiFi HD DBs. However, the NiFi H2 DBs are used to hold flow configuration history (what user did what on the canvas) and authenticated user server side tokens. These DBs can be removed/renamed and on startup NiFi will created new DBs.  Removing these will have no impact on your flow.xml, content, etc... You will simply lose your flow configuration history (will start over from this point forward tracking changes) and your users will be forced to login again. Hope this helps, Matt ... View more

What @DigitalPlumber said. Also make sure that Match Requirement is set to "content must contain match", otherwise it won't work. ... View more

You can set the run schedule of the processor to cron driven [1] and give it your cron expression from there. Note that this cron is not the typical OS cron syntax and its based off quartz cron scheduler [2] To build a cron expression this is a good online tool to do so [3]   [1] https://nifi.apache.org/docs/nifi-docs/html/user-guide.html#scheduling-strategy [2] http://www.quartz-scheduler.org/ [3] https://www.freeformatter.com/cron-expression-generator-quartz.html ... View more

Please also see this post: https://community.cloudera.com/t5/Support-Questions/Send-TCP-acknowledgement-in-NIFI/m-p/334438#M231765 ... View more

Seems like you should follow this:   https://nifi.apache.org/docs/nifi-docs/html/administration-guide.html#proxy_configuration ... View more

ExecuteSQL will use Database Connection Pooling Service controller service. From there you configure a JDBC connection string. The connection string will depend on the specific jar you will use so in this case Presto Here is reference on JDBC connection for Presto and that is an external database function and not so much NiFi issue:   https://prestodb.io/docs/current/installation/jdbc.html ... View more

Old post but for awareness: As reported here: UUID Logical type is now included under Apache Parquet 1.12 https://issues.apache.org/jira/browse/PARQUET-1827 Apache NiFi will use apache Parquet 1.12 starting from Apache NiFi 1.14   ... View more