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feat: new overwrite_files
S3 write mode for atomic overwrites
#3074
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overwrite_files
S3 write mode for atomic overwritesoverwrite_files
S3 write mode for atomic overwrites
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Hi @jaidisido! This PR is now ready for review. Let me know if the main idea is consistent and I'll add some tests 👍🏻 // cc. @kukushking |
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Feature or Bugfix
Detail
This pull request introduces a new mode,
overwrite_files
, when writing to S3. This new mode ensures atomic replacement of the files uploaded to S3 and removes the possible race-conditions created by theoverwrite
&overwrite_partitions
modes as explained in this issue.This initial implementation has the following limits by design:
max_rows_by_file
argument should not be set.bucketing_info
argument should not be set.These limitations will ensure that the number of output files is always 1 per partition. This way, the files will always be correctly overwritten by subsequent uploads. In the future, we may allow multi-part uploads and optionally add a final phase to delete any extra files in the partition or root.
Relates
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.