sambamba slice piped with sambamba view is having runtime problem when running in parallel

[yangyxt]

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Describe the bug

The command is like this:

"""
sambamba slice -q -L xxx.bed xxx.bam | sambamba view -q -F "xxx" -f sam /dev/stdin | sort - | uniq -
"""

When I run this command in interactive shell the command finishes in 20 seconds. But if I run it in python subprocess, in parallel (silcing the same bam file with different bed region files), it sometimes run into a situation where the command runs for hours (like 20 -40 hours according to my observation) and in htop interface, the job is always in an R status instead of stay in dormant (S or other status) and the CPU usage is around 100%. I'm so confused and having trouble to reproduce the issue if not run the entire pipeline.

To Reproduce

seems that I cannot reproduce the error to you guys instantly with any small samples. I just wonder whether my description will remind you of any similar issues you've been dealt with ? I cannot find any similar issues in the github issues section though. Thanks.

The sambamba version I'm using is 1.0.0. Thanks.