Parallel uploads to the same s3 bucket directory with s3cmd

Question

I try to run the following code but index.js turns out to be corrupted.

Any idea why?

gzip dist/production/index.js
mv dist/production/index.js.gz dist/production/index.js

s3cmd --access_key="$S3_ACCESS_KEY" --secret_key="$S3_SECRET_KEY" \
      --acl-public --no-mime-magic --progress --recursive         \
      --exclude "dist/production/index.js" \
      put dist/production/ 
      "s3://${BUCKET}/something/${BUILD_IDENTIFIER}/production/" &

s3cmd --access_key="$S3_ACCESS_KEY" --secret_key="$S3_SECRET_KEY" \
      --acl-public --no-mime-magic --progress --recursive         \
      --add-header="Content-Encoding:gzip" \
      put dist/production/index.js 
      "s3://${BUCKET}/something/${BUILD_IDENTIFIER}/production/" &

wait

Notice the & in the end of the two commands that makes two uploads to the same location in parallel.

Answer 1

Is your problem is not with the line?

cp dist/production/index.js.gz dist/production/index.js

You are copying gzipped file, not the plain index.js text file.

Hope it helps.

EDIT1:

If you are doing it on purpose why not maintain the gz extension. Extensions does lot of things when you handle with browser.

cp dist/production/index.js.gz dist/production/index.js.gz

If you use plain s3 to download and verify the hash, they should be the same file. I did verify it.