VS-942. Fix an error where NO variants were found #8388
Merged
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This PR fixes a bug I found in testing. I was extracting all the samples for an Exome run and it was widely scattered. So there occurred a situation where there no VET entries in one of the shards and a NPE happened.
This PR fixes that and makes it tool generate an empty (well, has a header) VCF, which the GVS workflow can handle.
Failing workflow showing the problem here.
Passing workflow (after the fix) here
Passing Integration Test here