我计划将我的生物信息学管道移动到蛇形,因为我当前的管道是多个脚本的集合,这些脚本越来越难以遵循。在教程和文档的基础上,snakemake 似乎是一个非常清晰和有趣的管道管理选项。但是,我不熟悉 Python,因为我主要使用 bash 和 R,所以 snakemake 似乎更难学习:我面临以下问题。
我有两个文件,sampleA_L001_R1_001.fastq.gz 和 sampleA_L001_R2_001.fastq.gz,它们放在同一个目录 sampleA 中。我想使用cat
命令合并这些文件。这实际上是一个测试运行:在实际情况下,每个样本应该有八个单独的 FASTQ 文件,它们应该以类似的方式合并。非常简单的工作,但我的代码有问题。
snakemake --latency-wait 20 --snakefile /home/users/me/bin/snakefile.txt
rule mergeFastq:
input:
reads1='sampleA/sampleA_L001_R1_001.fastq.gz',
reads2='sampleA/sampleA_L001_R2_001.fastq.gz'
output:
reads1='sampleA/sampleA_R1.fastq.gz',
reads2='sampleA/sampleA_R2.fastq.gz'
message:
'Merging FASTQ files...'
shell:
'cat {input.reads1} > {output.reads1}'
'cat {input.reads2} > {output.reads2}'
-------------------------------------------------------------
Provided cores: 1
Rules claiming more threads will be scaled down.
Job counts:
count jobs
1 mergeFastq
1
Job 0: Merging FASTQ files...
Waiting at most 20 seconds for missing files.
Error in job mergeFastq while creating output files sampleA_R1.fastq.gz, sampleA_R2.fastq.gz.
MissingOutputException in line 5 of /home/users/me/bin/snakefile.txt:
Missing files after 20 seconds:
sampleA_R1.fastq.gz
This might be due to filesystem latency. If that is the case, consider to increase the wait time with --latency-wait.
Removing output files of failed job mergeFastq since they might be corrupted: sampleA_R2.fastq.gz
Will exit after finishing currently running jobs.
Exiting because a job execution failed. Look above for error message.
如您所见,我已经尝试了该--latency-wait
选项,但没有成功。你有什么想法可能是我的问题的根源吗?文件路径正确,文件本身未损坏且正常。我在通配符方面也遇到了类似的问题,所以在snakemake基础知识中一定有一些我不理解的东西。