https://community.cloudera.com/t5/Support-Questions/Issue-with-NiFi-MergeContent-Only-Outputting-First-FlowFile/m-p/410940#M252950 <P><!-- StartFragment --></P><P>Hi all,<BR />I've been working with NiFi and observed an issue with the MergeContent processor. After running several experiments, I noticed that regardless of how many FlowFiles I send in, only the first one that enters the processor is included in the merged output. The rest seem to be ignored.</P><P>My use case involves merging two FlowFiles and passing them into a custom Python script. However, since only one file is getting through, the processing is incomplete.</P><P>I’ve verified that the incoming queue has both FlowFiles and that the processor settings appear standard. Has anyone encountered this?</P><UL><LI>Could it be related to Merge Strategy or correlation attribute configuration?</LI><LI>Are there specific settings required to ensure multiple FlowFiles are merged?</LI></UL><P>Any guidance or suggestions would be appreciated. Thanks!</P><P><!-- EndFragment --></P> Fri, 27 Jun 2025 07:22:56 GMT Bhar 2025-06-27T07:22:56Z https://community.cloudera.com/t5/Support-Questions/Issue-with-NiFi-MergeContent-Only-Outputting-First-FlowFile/m-p/410940#M252950 <P><!-- StartFragment --></P><P>Hi all,<BR />I've been working with NiFi and observed an issue with the MergeContent processor. After running several experiments, I noticed that regardless of how many FlowFiles I send in, only the first one that enters the processor is included in the merged output. The rest seem to be ignored.</P><P>My use case involves merging two FlowFiles and passing them into a custom Python script. However, since only one file is getting through, the processing is incomplete.</P><P>I’ve verified that the incoming queue has both FlowFiles and that the processor settings appear standard. Has anyone encountered this?</P><UL><LI>Could it be related to Merge Strategy or correlation attribute configuration?</LI><LI>Are there specific settings required to ensure multiple FlowFiles are merged?</LI></UL><P>Any guidance or suggestions would be appreciated. Thanks!</P><P><!-- EndFragment --></P> Fri, 27 Jun 2025 07:22:56 GMT https://community.cloudera.com/t5/Support-Questions/Issue-with-NiFi-MergeContent-Only-Outputting-First-FlowFile/m-p/410940#M252950 Bhar 2025-06-27T07:22:56Z https://community.cloudera.com/t5/Support-Questions/Issue-with-NiFi-MergeContent-Only-Outputting-First-FlowFile/m-p/411024#M252969 <P><a href="https://community.cloudera.com/t5/user/viewprofilepage/user-id/128087">@Bhar</a>&nbsp;<BR /><BR />Can you share more detail?&nbsp; Without it, I would only be making random guesses.</P><OL><LI>What version of Apache NiFi are using?</LI><LI>Is this a single instance of NiFi or a NiFi multi-node cluster?</LI><LI>How is your MergeContent processor configured?</LI></OL><P>Thank you,</P><P>Matt</P> Tue, 01 Jul 2025 12:50:40 GMT https://community.cloudera.com/t5/Support-Questions/Issue-with-NiFi-MergeContent-Only-Outputting-First-FlowFile/m-p/411024#M252969 MattWho 2025-07-01T12:50:40Z