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Apache NiFi kafka + Fetchs3 object Merge content issue

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Apache NiFi kafka + Fetchs3 object Merge content issue

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Hi,

 

I'm currently facing issues on apache nifi merge content from two flow files fetchs3object and kafka consume processor. My scenario is whenever new updated records are published into kafka needs to merge with s3 object file and finally pushed into s3 updated file. Here is my flow;

 

https://imgur.com/a/3CZfsCT

Please help me to resolve from this issue.

 

Whenever i got updated records sometimes duplicate there or not appending properly. i don't know where is the issue. 

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