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ose_gold
ose_gold
Silver ⭐️
January 24, 2025
Question

ListFTP Tracking Entities get no files

i am new at nifi . i want to use listftp with tracking entities with rides cache . i use those configs but no files listed i donot now whats is wrong here Screenshot (173).pngScreenshot (174).pngScreenshot (175).pngScreenshot (176).pngScreenshot (177).png

5 replies

MattWho
Titanium ⭐️⭐️⭐️
MattWho
Titanium ⭐️⭐️⭐️
January 24, 2025

@ose_gold 

Welcome to the community.

Can you share more details.

  1. Try using the  latest Apache NiFi 2.1.0 release instead of the very first unofficial maintenance release 2.0.0.
  2. Does the processor show as valid?
  3. From the server running NiFi, can you resolve and connect to the FTP server via command line?
  4. Do any of the files on the FTP server have a last modified timestamp newer then 3 hours old?  
  5. Try changing "Entity Tracking Initial Listing Target"  from "tracking time window" to "All available".   Does it produce a FlowFiles?
  6. When you start listFTP processor, does it indicate an active running thread in the upper right corner?
  7. What do you see in the nifi-app.log when processor runs?  Any exceptions?
    Try puttingg this processor class (org.apache.nifi.processors.standard.ListenFTP) in DEBUG in the NiFi logback.xml file to get additional logging output.
  8. With using "tracking timestamps" instead does it produce flowfiles?

Hopefully some of the above checks can help narrow focus of where the issue exists.

Thanks you,

Matt

 

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    ose_gold
    ose_goldAuthor
    Silver ⭐️
    January 25, 2025

    1- yes i tried the last version

    2- yes it does

    3-yes i can and it fetch lists in nifi when i use the timestamp not the entities list

    4- yes , it does

    5- no change

    6-yes

    7-there is no exception 

    8- yes it does

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    MattWho
    Titanium ⭐️⭐️⭐️
    MattWho
    Titanium ⭐️⭐️⭐️
    January 27, 2025

    @ose_gold 

    Looping back on number 6.  When you see the active thread indicated in the upper right corner, do you see tasks as completing or the thread just remains active all the time?

    Do you see any data being written to your Redis distributed map cache server?

    Thanks,
    Matt

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    DianaTorres
    Community Manager
    DianaTorres
    Community Manager
    January 24, 2025

    @ose_gold Welcome to the Cloudera Community!

    To help you get the best possible solution, I have tagged our Airflow experts @SanthoshGowda @smdas who may be able to assist you further.

    Please keep us updated on your post, and we hope you find a satisfactory solution to your query.

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    Regards, Diana Torres, Senior Community Moderator
    DianaTorres
    Community Manager
    DianaTorres
    Community Manager
    February 3, 2025

    @ose_gold Has the reply helped resolve your issue? If so, please mark the appropriate reply as the solution, as it will make it easier for others to find the answer in the future. Thanks.

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    Regards, Diana Torres, Senior Community Moderator
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