Could it be different 'current' working directories? What happens if
you hardcode the full path into the command and input/output files?
./convert.bin -> /Dev/Solr/bin/convert.bin, etc.
Also, you may want to use some file system observation tools to figure
out exactly what file is touched where.
I have following code on my Apache Tika Maven project.
This code works when I test locally, but fails when it's attached as
external jar in Apache Solr (container is Tomcat).
String cmd; contains command string that will convert file with input as
./convert.bin input.custom output.xml
I checked
