Masking flat file process stalls or hangs

Products

• CA Test Data Manager (Data Finder / Grid Tools)

Issue/Introduction

We are working to mask a large flat file.
We only use the FORMATENCRYPT function to mask some fields and before the process is finished, it stops masking and hangs.
Nothing else is written to the log, audit, or scramble files, but the Java process continues to run, consuming more and more memory.

Any idea what could be going on?

Environment

Release : 4.9.1

Cause

It was found that every time the masking stops or hangs on the records whose content included the character "(double quote).

Resolution

Update the content of those records starting with character "(double quote) resolved the issue.