filter command with multiple readers per node

[zulfi123786]

I was hoping to understand how filter command with multiple readers per node works in seq file stage.

I was trying to read a file with the filter command "sed '1d;$d'" to remove the first and last lines of the file and reading it with 2 readers per node and all the time the jobs starts reading the file with no issue but when the file is just on completion of the read process the job aborts saying "broken pipe"

All works fine with 1 reader per node. Guess the data is broken and read by 2 readers then filter command applies.