Images imported with --parallel-fileset and regex targets may be incorrectly linked

[sbesson]

When importing images using --parallel-fileset and regex targets, the images can end up being linked to the incorrect dataset.

The following local structure can be used to reproduce the issue:

images/
images/day1
images/day1/d1im2.fake
images/day1/d1im1.fake
images/day2
images/day2/d2im2.fake
images/day2/d2im1.fake

After creating the day1 and day2 datasets on the server, the four following commands have the following behavior:

• omero import images -T "regex:+name:^.*images/(?<Container1>.*?)" imports 2 images into each dataset as expected
• omero import images -T "regex:+name:^.*images/(?<Container1>.*?)" --parallel-fileset 2 imports 2 images into each dataset as expected
• omero import images -T "regex:+name:^.*images/(?<Container1>.*?)" --parallel-fileset 3 imports 3 images into the day1 dataset and 1 image into the day2 dataset
• omero import images -T "regex:+name:^.*images/(?<Container1>.*?)" --parallel-fileset 4 imports all 4 images into the day1 dataset

[imagesc-bot]

This issue has been mentioned on Image.sc Forum. There might be relevant details there:

https://forum.image.sc/t/parallel-imports-into-datasets-created-using-regular-expressions/39587/4