Hi Till,

thank you for your reply.

I have the following code snippet:

/intermediateGraph.getVertices().writeAsCsv(tempGraphOutputPath, "\n", ";", WriteMode.OVERWRITE);/

When I remove the WriteMode parameter, it works. So I can reason that the DataSet contains data elements.

Cheers,
Mihail


On 30.06.2015 12:06, Till Rohrmann wrote:

Hi Mihail,

have you checked that the |DataSet| you want to write to HDFS actually contains data elements? You can try calling |collect| which retrieves the data to your client to see what’s in there.

Cheers,
Till

​

On Tue, Jun 30, 2015 at 12:01 PM, Mihail Vieru <vi...@informatik.hu-berlin.de <mailto:vi...@informatik.hu-berlin.de>> wrote:

    Hi,

    the writeAsCsv method is not writing anything to HDFS (version
    1.2.1) when the WriteMode is set to OVERWRITE.
    A file is created but it's empty. And no trace of errors in the
    Flink or Hadoop logs on all nodes in the cluster.

    What could cause this issue? I really really need this feature..

    Best,
    Mihail



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