FileNotFoundError -- ClusterODM

Running a dataset through ClusterODM that I previously ran through as a single dataset. The dataset has some camera calibration challenges associated with being a belly landing fixed-wing with a commodity camera, so I though localizing the camera errors might be useful, and what better approach than doing that with split merge.

Version: latest versions of WebODM, ClusterODM, and NodeODM, up-to-date as of today (Sept. 12, 2021). Updated using docker pull on latest images.

So here is what I see during the second stage of remote submodel processing:

FileNotFoundError: [Errno 2] No such file or directory: '/var/www/data/caec6ac0-05dd-484d-8a26-56bf7e0fefb8/opensfm/exif/deduped2016-09-13_08.59.58.JPG.exif'
Full log saved at /var/www/data/845a57fa-1b8d-49d2-927e-278898888009/submodels/submodel_0010/error.log
[INFO]    LRE: Cleaning up remote task (caec6ac0-05dd-484d-8a26-56bf7e0fefb8)... OK

If I look for more detail in the log on that remote machine, I see something like this:

useruser@nodex:~$ docker cp hungry_allen:/var/www/data/845a57fa-1b8d-49d2-927e-278898888009/submodels/submodel_0010/error.log .
useruser@nodex:~$ tail error.log 
exif = {image: self.load_exif(image) for image in self.images()}
File "/code/SuperBuild/install/bin/opensfm/opensfm/", line 981, in <dictcomp>
exif = {image: self.load_exif(image) for image in self.images()}
File "/code/SuperBuild/install/bin/opensfm/opensfm/", line 579, in load_exif
with self.io_handler.open_rt(self._exif_file(image)) as fin:
File "/code/SuperBuild/install/bin/opensfm/opensfm/", line 1349, in open_rt
return, "r", encoding="utf-8")
File "/code/SuperBuild/install/bin/opensfm/opensfm/", line 1341, in open
return open(*args, **kwargs)
FileNotFoundError: [Errno 2] No such file or directory: '/var/www/data/caec6ac0-05dd-484d-8a26-56bf7e0fefb8/opensfm/exif/deduped2016-09-13_08.59.58.JPG.exif'

If I check to see if that exif file seems corrupted or similar, I get the following:

useruser@nodex:~$ docker cp hungry_allen:/var/www/data/845a57fa-1b8d-49d2-927e-278898888009/opensfm/exif/deduped2016-09-13_08.59.58.JPG.exif .
useruser@nodex:~$ more deduped2016-09-13_08.59.58.JPG.exif 
    "make": "SONY",
    "model": "DSC-WX220",
    "width": 4896,
    "height": 3672,
    "projection_type": "brown",
    "focal_ratio": 0.0,
    "orientation": 1,
    "capture_time": 1473753586.693,
    "gps": {
        "latitude": -5.788261138888889,
        "longitude": 39.29726327777777,
        "altitude": 261.167,
        "dop": 20.0
    "band_name": "RGB",
    "camera": "v2 sony dsc-wx220 4896 3672 brown 0.0 rgb"

I’ve got a couple of these cropping up in a 7k image dataset. I could pull these out of the process and rerun, but I am curious if there are any insights on what is happening to trigger this error.

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Mm, not sure, but doesn’t seem to be an isolated case.

If you can reproduce this consistently, can you setup a (small) test case (images, parameters, etc.)?

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You don’t want a 7k image test case?

Yeah, let me see what I can do that’s reproducible.



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