Nifi : Could not rename file

paresh_baldaniy — Fri, 29 Dec 2017 01:49:11 GMT

Hi ,

When I am trying to Overwriting File then getting below error

filenotreplaced.png

is there any alternative solution to "replace"(Delete existing "parquet" file and put new file )

Re: Nifi : Could not rename file

Shu_ashu — Sun, 18 Aug 2019 00:35:37 GMT

@Paresh Baldaniya

We cannot change the existing filename in HDFS but we can do alternate solution in NiFi as below.

You need to use UpdateAttribute processor before PutParquet processor.

Update Attribute

we are going to update the filename before putparquet processor so that everytime when file goes to putparquet processor will have same file name every time.

Add new property to Update attribute processor

filename

desired_parquet_filename.prq

Configs:-

PutParquet:-

So we are going to have same filename everytime and in this processor we need to change

Overwrite Files property to True //if the same filename exists in the directory processor will replace the existing file with new file

Configs:-

Flow:-

1.GetFile
2.UpdateAttribute //change the filename by adding filename property
3.PutParquet //change the Overwrite files property to true

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Nifi : Could not rename file

Re: Nifi : Could not rename file