Deal with warnings generated when native NF processes are used

[drpatelh]

I implemented a few modules in this pipeline that use a native NF Groovy process like here. It made sense to exploit the functionality on offer in Groovy to perform these sorts of tasks rather than wrapping them in an external script.

However, this results in these warnings being generated which are harmless but can be confusing to users who assume that there is an issue with the pipeline/infrastructure. The warning is generated because Nextflow will run these native / Groovy processes on the head node via the master NF job rather than a compute job.

WARN: Process 'NFCORE_RNASEQ:RNASEQ:MULTIQC_TSV_FAIL_MAPPED' cannot be executed by 'awsbatch' executor -- Using 'local' executor instead
WARN: Process 'NFCORE_RNASEQ:RNASEQ:MULTIQC_TSV_STRAND_CHECK' cannot be executed by 'awsbatch' executor -- Using 'local' executor instead

Ping @pditommaso 🏖️

[phue]

Explicitly setting executor 'local' in the process should make the warnings disappear

[drpatelh]

I like the way you ghost in and out of things @phue !! 🤣

[phue]

👻

[drpatelh]

I have added executor 'local' to the relevant processes and that seems to have fixed generating the warnings:

rnaseq/modules/local/multiqc_tsv_from_list.nf

Line 3 in 1e20611

executor 'local'