Issue with Tableu Server Publish node

[NiranjanKale]

Publish to Tableau Server is not working as expected. I am using  flow. The flow is creating a file in local disk and it is also publishing file on tableau server. Local file contains all the record but I am missing some of the records on file published on tableau server. I investigated and identified that tableau publish is dropping the records 

In the logs it shows that publish is trying to publish in chunks

In first write it drops 4 MB out of 20 MB

and in second write ... it completes writing 20 MB

Has anyone came across similar issue?