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https://issues.apache.org/jira/browse/NIFI-11177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17767694#comment-17767694
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Matt Burgess commented on NIFI-11177:
-------------------------------------

Although the original author fixed their issue (because the type didn't match 
the column type), passing a null Timestamp value causes a NullPointerException.

> PutIceberg cannot write null Timestamp into Iceberg table
> ---------------------------------------------------------
>
>                 Key: NIFI-11177
>                 URL: https://issues.apache.org/jira/browse/NIFI-11177
>             Project: Apache NiFi
>          Issue Type: Bug
>    Affects Versions: 1.20.0
>            Reporter: Denis Jakupovic
>            Assignee: Matt Burgess
>            Priority: Major
>             Fix For: 1.latest, 2.latest
>
>
> Hey guys,
> we currently tested the PutIceberg processor. We can use it successfully to 
> write parquet files into Iceberg, however we cannot see how to insert 
> timestamps. We tested with avro as timestamp field, tested with parquet, and 
> with json as UNIX TIMESTAMP (Long) or even a timestamp with different string 
> formats with UTC. 
> What is the logic or the process to write timestamp into iceberg?
>  
> Best
> Denis



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