The default log threshold is DEBUG, which records detailed information in the install and administration log files. You can change the logging level to TRACE using the -log-level option, which will print more verbose information to help diagnose a problem.

Temporary files are files that are created while servicing a request and deleted after the request is serviced. In some cases, the key to diagnosing a problem is to be in a position to view these files.

To retain temporary files created in subsequent requests, define the following environment variable:

To resume cleaning up the files, unset the variable:

By default temporary files are written into the /tmp directory. YAB can be configured to write temporary files into a different directory by configuring the YAB_JAVA_OPTS environment variable: