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container_push: add doc about no transaction #2060
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sluongng
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linzhp
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May 5, 2022
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Can you run buildifier to format the file? |
linzhp
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May 25, 2022
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Can you run buildifier to pass the CI check? |
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CI now passed but it seems like we run into another issue caused by bazelbuild/bazel#15558 A separate update to gpg key inside WORKSPACE is needed |
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created #2096 for this |
When use container_push with skip_unchanged_digest, user often rely on the push process to (1) check for existence of the image in the registry and (2) push the image if (1) is false. This leave a time window between (1) and (2) where the image could have been pushed by an external process such as another CI job running in parallel. In such situation, depends on the container registry configuration, the push arrive later can either fail for attempting to override an already pushed image, or it will override the previously pushed image. There is no transactional guarantee that can help coordinate (1) and (2) in the current container registry spec. So let's document this edge case and advise users to work around by using some external distributed lock for running container_push target.
St0rmingBr4in
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Oct 17, 2022
When use container_push with skip_unchanged_digest, user often rely on the push process to (1) check for existence of the image in the registry and (2) push the image if (1) is false. This leave a time window between (1) and (2) where the image could have been pushed by an external process such as another CI job running in parallel. In such situation, depends on the container registry configuration, the push arrive later can either fail for attempting to override an already pushed image, or it will override the previously pushed image. There is no transactional guarantee that can help coordinate (1) and (2) in the current container registry spec. So let's document this edge case and advise users to work around by using some external distributed lock for running container_push target.
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When use container_push with skip_unchanged_digest,
user often rely on the push process to (1) check for existence
of the image in the registry and (2) push the image if (1) is false.
This leave a time window between (1) and (2) where the image
could have been pushed by an external process such as another CI
job running in parallel. In such situation, depends on the container
registry configuration, the push arrive later can either fail for attempting
to override an already pushed image, or it will override the previously
pushed image.
There is no transactional guarantee that can help coordinate (1) and (2) in
the current container registry spec. So let's document this edge case and
advise users to work around by using some external distributed lock for
running container_push target.
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