If you use GrokReader you can use the same kv filter from logstash: https://community.cloudera.com/t5/Support-Questions/Grok-Patterns-Expressions-for-capturing-comma-separated-key/td-p/311126   ... View more

Is there anything in the logs before/after the "already marked for transfer" entry? Trying to figure out how a flow file can get transferred and then something goes wrong (where we'd try to also send it to failure) ... View more

You can use Expression Language in the Max-Value Columns property to set them per-flowfile, but there currently isn't any way to fetch the primary key column(s) from the database and use those as the max-value columns. You could do that in upstream processors though, then set an attribute to those columns and pass that into GenerateTableFetch. ... View more

You can call a REST API from Nashorn/Javascript in ExecuteScript, but since Nashorn doesn't have access to a DOM per se, you'll need to use Java classes for the API call, check this link for an example: https://gist.github.com/billybong/a462152889b6616deb02 ... View more

For small XML files, you could use ExtractText to get the entire content into an attribute, then UpdateRecord with an XMLReader, adding a property for your new field (let's say "/content") and whatever writer you wish. You will have to specify the output schema for the writer, to include all the fields parsed by the XMLReader in addition to a CLOB/BLOB/String "content" field. If you want to exclude fields from the XML then just exclude them from the output schema. Then you can use a similar Reader (AvroReader if you use an AvroRecordSetWriter, e.g.) in PutDatabaseRecord.   If this doesn't work for your use case, you may need to use SplitXml and work on individual records. This will degrade the performance of PutDatabaseRecord unless you merge the records back together later (using MergeRecord for example). ... View more

That error indicates that your CSVReader is not treating the first line as a header, and thus even if you specify an explicit schema, if you don't set Treat First Line As Header to true, the reader will think the header line is a data line, and when it tries to parse it as data (numbers, e.g.) it will fail. ... View more