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What are restrictions on interval creation?

inkink Posts: 3Member

GATK Queue implements a Scatter/Gather algorithm to create a set of intervals in order to parallelise data alalysis. If -scatter_gather option is issued, a respective number of interval files will be created and the input BAM files will be processed using these intervals. However a question arises what happens if the point of subsequent analysis is at or near the start/end of an interval? Are all the codes which support -l/-L options robust in the respect to interval positions? Since the input files are not actually spliced, all information is available to the processing program which could make the right decisions so that no artefacts are produced. Are there any restrictions on interval creation? Perhaps it should be at least a few read lengths. Anything else? Thanks in advance!

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