...
Also note that resume (checkpointing) functionality will not work if you remove the work directory for a given workflow - it will think you are starting over from the beginning. You will see the following message:
| Code Block |
|---|
WARN: It appears you have never run this project before -- Option `-resume` is ignored |
Troubleshooting Pipelines
Each workflow execution will generate a .nextflow.log file in the directory where the pipeline is invoked. Subsequent executions will result in nextflow renaming previous .nextflow.log files to .nextflow.log.1, .nextflow.log.2, etc., depending on how many executions are performed in the current directory - .nextflow.log is always going to be the log file associated with the most recent run, with files with increasing numbers associating with older and older runs (.2 happened before .1, etc.).
Some workflows may also include a debug profile, which you can invoke alongside other profiles, to get more verbose output while the workflow is executing.