DADA2 process hanging

When running the denoise part of the workflow (qiime2-2021.8) all the processes hang up. I look at htop and top and the processes are not using the cpu they're just there doing nothing, and it's not for a second but for several minutes, and it's not reading anything from disk either. So yes it is hanging up.

qiime dada2 denoise-single --i-demultiplexed-seqs {1}-single-end.qza --p-trunc-len {trunc_left} --p-n-reads-learn 30000 --p-n-threads 30 --o-representative-sequences rep-seqs-dada2_{1}.qza --o-table table-dada2_{1}.qza --output-dir dada2-dmx-se_${1}

Actually, the problem is that for some reason the dada2 step is sensitive to changing the IFS separator environment variable. The problem is that when you source ~/.basrc it might be changed there, which is needed when trying to activate conda from within a bash script. This reliance on IFS should be removed it's just a bad coding practice to have to rely this inside R or python.

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