dvc add no longer working

[wappler99]

Bug Report

Issue name

dvc add causes an unexpected error:

Description

I've had DVC running on a Linux server for the past 3 months. Yesterday I set up a new conda environment with DVC 3.59.1 and now when I add data with "dvc add xxx" I get the following error:

"Adding... ERROR: unexpected error - no such column: "size" - should this be a string literal in single-quotes?".

Let me add that I have tried to reset DVC ("dvc init") and I have also deleted the .dvc directory and started from scratch, but the error persists. Maybe I made a mistake deleting the .dvc directory. Is there something else I need to do for a complete dvc reset?

Reproduce

1. conda install dvc==3.57.0
2. git init
3. dvc init
4. dvc add data/testfile.txt

Expected

Dvc adds file and does not show an error.

Environment information

Ubuntu 20.04
DVC 3.57.0

Output of dvc doctor:

$ dvc doctor

DVC version: 3.57.0 (conda)

Platform: Python 3.9.21 on Linux-6.8.0-52-generic-x86_64-with-glibc2.35
Subprojects:
dvc_data = 3.16.9
dvc_objects = 5.1.0
dvc_render = 1.0.2
dvc_task = 0.40.2
scmrepo = 3.3.10
Supports:
http (aiohttp = 3.11.12, aiohttp-retry = 2.8.3),
https (aiohttp = 3.11.12, aiohttp-retry = 2.8.3)
Config:
Global: /home/uli/.config/dvc
System: /etc/xdg/dvc
Cache types: https://error.dvc.org/no-dvc-cache
Caches: local
Remotes: None
Workspace directory: ext4 on /dev/nvme0n1
Repo: dvc, git
Repo.site_cache_dir: /var/tmp/dvc/repo/1efc5571a372d9b6285ce7e59990bbae

[kjnam]

Having the same error message while pulling. So far this happens on Windows. My environment is shown below:

DVC version: 3.59.1 (conda)
---------------------------
Platform: Python 3.11.11 on Windows-10-10.0.26100-SP0
Subprojects:
        dvc_data = 3.16.7
        dvc_objects = 5.1.0
        dvc_render = 1.0.2
        dvc_task = 0.40.2
        scmrepo = 3.3.10
Supports:
        http (aiohttp = 3.11.12, aiohttp-retry = 2.8.3),
        https (aiohttp = 3.11.12, aiohttp-retry = 2.8.3)

[wappler99]

I've upgraded to the latest version (3.59.1), still getting the error when I try to do a dvc add.

DVC version: 3.59.1 (conda)

Platform: Python 3.12.7 on Linux-6.8.0-52-generic-x86_64-with-glibc2.35
Subprojects:
dvc_data = 3.16.9
dvc_objects = 5.1.0
dvc_render = 1.0.2
dvc_task = 0.40.2
scmrepo = 3.3.10
Supports:
http (aiohttp = 3.11.12, aiohttp-retry = 2.8.3),
https (aiohttp = 3.11.12, aiohttp-retry = 2.8.3)
Config:
Global: /home/uli/.config/dvc
System: /etc/xdg/dvc
Cache types: https://error.dvc.org/no-dvc-cache
Caches: local
Remotes: None
Workspace directory: ext4 on /dev/nvme0n1
Repo: dvc, git
Repo.site_cache_dir: /var/tmp/dvc/repo/c02b34b775c7476e44bf2ef0e03c61c6

[skshetry]

Can you please try with pip? Also, please share the verbose output, try adding --verbose to the end of your command.

[vamshisaideep9]

Instead of conda try it with virtualenv

[nobutoba]

Hi, I ran into the same problem today and found that it's related to libsqlite version 3.49.1. In my case, running:

conda install -c conda-forge libsqlite=3.48.0

fixed the issue. Hope this helps!

[kjnam]

@nobutoba Thanks. It seems to resolve the issue. Looks like there is a bug or an incompatibility in the recent version of libsqlite.

[wappler99]

@skshetry: Thanks for jumping in. I looked at this in more detail last night. the crash happened in site-packages/dvc_data/hashfile/cache.py". The program was trying to do an insert into cache db and complained the column 'size' did not exist. The print for the added file looks as follows: ('/test/data/test.txt', '{"version":1,"checksum":"321037014704241475440851141032219623992","size":5,"hash_info":{"md5":"6137cde4893c59f76f005a8123d8e8e6"}}')].
So something's off with that database and like @nobutoba has pointed out, it seems to be an issue with sqlite. His proposed fix worked for me.

@nobutoba : Thanks, you are a life saver!

[mdekstrand]

It doesn't make sense to me to close this issue until the problem is fixed, either in DVC or SQLite — downgrading SQLite works around the problem, but there is still a bug when combining DVC with the most recent version of SQLite, which is a configuration that happens in Conda and I expect would also appear in rolling-release Linux distributions like Arch.

[skshetry]

@mdekstrand, I have reopened the issue. If you are experiencing this problem, please provide a verbose traceback so that I can identify where this is happening.

If you are installing DVC from any other places than PyPI, I suggest you try installing with uv or pip and see if the issue happens. There was a bug in a dependency that was fixed recently (iterative/sqltrie#53) and released.

There is also a related bug report: iterative/dvc-data#599, but so far I haven't been able to reproduce with sqlite3 3.49.1. That seems to come from https://github.com/grantjenks/python-diskcache, but I don't see how size column can be missing. :(

As another step, try deleting Repo.site_cache_dir (you can find its path in the output of dvc doctor) — the database may have been corrupted somehow.

[mdekstrand]

Here's a traceback. This was in CI, so cache was completely clean (except for the local file cache, cached in GHA).

Switching to uv does get a working install, and we have switched this project to uv. I expect that is using whatever sqlite version the Python install was linked against.

Traceback

2025-02-20 15:23:34,081 DEBUG: Preparing to collect status from '/home/runner/work/poprox-recommender-locality/poprox-recommender-locality/.dvc/cache/files/md5'
2025-02-20 15:23:34,081 DEBUG: Collecting status from '/home/runner/work/poprox-recommender-locality/poprox-recommender-locality/.dvc/cache/files/md5'
2025-02-20 15:23:36,269 ERROR: unexpected error - no such column: "size" - should this be a string literal in single-quotes?
Traceback (most recent call last):
  File "/home/runner/work/poprox-recommender-locality/poprox-recommender-locality/.pixi/envs/test/lib/python3.11/site-packages/dvc/cli/__init__.py", line 211, in main
    ret = cmd.do_run()
          ^^^^^^^^^^^^
  File "/home/runner/work/poprox-recommender-locality/poprox-recommender-locality/.pixi/envs/test/lib/python3.11/site-packages/dvc/cli/command.py", line 27, in do_run
    return self.run()
           ^^^^^^^^^^
  File "/home/runner/work/poprox-recommender-locality/poprox-recommender-locality/.pixi/envs/test/lib/python3.11/site-packages/dvc/commands/data_sync.py", line 35, in run
    stats = self.repo.pull(
            ^^^^^^^^^^^^^^^
  File "/home/runner/work/poprox-recommender-locality/poprox-recommender-locality/.pixi/envs/test/lib/python3.11/site-packages/dvc/repo/__init__.py", line 58, in wrapper
    return f(repo, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/work/poprox-recommender-locality/poprox-recommender-locality/.pixi/envs/test/lib/python3.11/site-packages/dvc/repo/pull.py", line 30, in pull
    processed_files_count = self.fetch(
                            ^^^^^^^^^^^
  File "/home/runner/work/poprox-recommender-locality/poprox-recommender-locality/.pixi/envs/test/lib/python3.11/site-packages/dvc/repo/__init__.py", line 58, in wrapper
    return f(repo, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/work/poprox-recommender-locality/poprox-recommender-locality/.pixi/envs/test/lib/python3.11/site-packages/dvc/repo/fetch.py", line 184, in fetch
    fetch_transferred, fetch_failed = ifetch(
                                      ^^^^^^^
  File "/home/runner/work/poprox-recommender-locality/poprox-recommender-locality/.pixi/envs/test/lib/python3.11/site-packages/dvc_data/index/fetch.py", line 159, in fetch
    fetched += save(
               ^^^^^
  File "/home/runner/work/poprox-recommender-locality/poprox-recommender-locality/.pixi/envs/test/lib/python3.11/site-packages/dvc_data/index/save.py", line 172, in save
    transferred += cache.add(
                   ^^^^^^^^^^
  File "/home/runner/work/poprox-recommender-locality/poprox-recommender-locality/.pixi/envs/test/lib/python3.11/site-packages/dvc_data/hashfile/db/__init__.py", line 119, in add
    self.state.save_many(
  File "/home/runner/work/poprox-recommender-locality/poprox-recommender-locality/.pixi/envs/test/lib/python3.11/site-packages/dvc_data/hashfile/state.py", line 197, in save_many
    return self.hashes.set_many(lst)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/work/poprox-recommender-locality/poprox-recommender-locality/.pixi/envs/test/lib/python3.11/site-packages/dvc_data/hashfile/cache.py", line 116, in set_many
    self._con.executemany(query, items)
sqlite3.OperationalError: no such column: "size" - should this be a string literal in single-quotes?

2025-02-20 15:23:36,288 DEBUG: link type reflink is not available ([Errno 95] no more link types left to try out)
2025-02-20 15:23:36,288 DEBUG: Removing '/home/runner/work/poprox-recommender-locality/.lp6xqzg6jvvOhuwflIfPSA.tmp'
2025-02-20 15:23:36,288 DEBUG: Removing '/home/runner/work/poprox-recommender-locality/.lp6xqzg6jvvOhuwflIfPSA.tmp'
2025-02-20 15:23:36,288 DEBUG: Removing '/home/runner/work/poprox-recommender-locality/.lp6xqzg6jvvOhuwflIfPSA.tmp'
2025-02-20 15:23:36,288 DEBUG: Removing '/home/runner/work/poprox-recommender-locality/poprox-recommender-locality/.dvc/cache/files/md5/.byYaGb1jhptze1WCh4uMFg.tmp'
2025-02-20 15:23:36,291 DEBUG: Version info for developers:
DVC version: 3.59.1 (conda)
---------------------------
Platform: Python 3.11.11 on Linux-6.8.0-1021-azure-x86_64-with-glibc2.39
Subprojects:
	dvc_data = 3.16.9
	dvc_objects = 5.1.0
	dvc_render = 1.0.2
	dvc_task = 0.40.2
	scmrepo = 3.3.10
Supports:

Having any troubles? Hit us up at https://dvc.org/support, we are always happy to help!
	http (aiohttp = 3.11.12, aiohttp-retry = 2.8.3),
	https (aiohttp = 3.11.12, aiohttp-retry = 2.8.3),
	s3 (s3fs = 2025.2.0, boto3 = 1.36.3)
Config:
	Global: /home/runner/.config/dvc
	System: /etc/xdg/dvc
Cache types: hardlink, symlink
Cache directory: ext4 on /dev/sda1
Caches: local
Remotes: s3, s3, s3
Workspace directory: ext4 on /dev/sda1
Repo: dvc, git
Repo.site_cache_dir: /var/tmp/dvc/repo/0e7b94d77fff1d1d5a21c2b03a6980d6
2025-02-20 15:23:36,292 DEBUG: Analytics is enabled.
2025-02-20 15:23:36,369 DEBUG: Trying to spawn ['daemon', 'analytics', '/tmp/tmp3wvfh0pw', '-v']
2025-02-20 15:23:36,377 DEBUG: Spawned ['daemon', 'analytics', '/tmp/tmp3wvfh0pw', '-v'] with pid 4104
2025-02-20 15:23:36,378 DEBUG: Removing '/tmp/tmp5ljc62dfdvc-clone'
2025-02-20 15:23:36,396 DEBUG: Removing '/tmp/tmpmotiwnuxdvc-clone'
2025-02-20 15:23:36,398 DEBUG: Removing '/tmp/tmp5gyth2k5dvc-clone'
2025-02-20 15:23:36,400 DEBUG: Removing '/tmp/tmp6j7u3h2odvc-cache'
2025-02-20 15:23:36,400 DEBUG: Removing '/tmp/tmp6od4q00ndvc-cache'
2025-02-20 15:23:36,401 DEBUG: Removing '/tmp/tmpcfx4hzd0dvc-cache'

[skshetry]

Ok, I finally found the root cause: conda-forge/sqlite-feedstock#130, which is a regression in a recent release of sqlite installed from conda. cc @sfinkens.

[mdekstrand]

Is DVC or one of its dependencies using a double-quoted string literal when it should use a single-quoted one for SQL conformity?