hasSameTextualContentAs is hanging with text file #2345

Summary

I'm trying to use asserj to compare a generated csv file with an existing one inside a junit test.
I'm using Eclipse (using xmx 3Gb) on java 8 in a Windows10 with 16Gb ram.

my file has 11Kb, more or less 240 thousand rows.

But the test is not completing. I did a debug and it is hanging in the MyersDiff.buildPath method.

Example

assertThat(xFile).hasSameTextualContentAs(xFileClone);