Attempted to convert rather large mongo dump to dynamo.

Seems like AWS data pipeline is most elegant way to do this if one can workaround with dynamo non-standard json format issue.

Get https://www.npmjs.com/package/dyngodb2 and create a collection

export json and run some sed to trim

mongoexport --db=wiki --collection=wiki -f title,text > output.json
sed -i 's/{ \"$oid\" : \"/"/g;s/\" }, \"/", "/g;s/{{{//g;s/}}}//g;s/{{//g;s/}}//g;s/$/,/g;' output.json

split file to avoid OOM, adjust 30000 based on your free ram then add [ and replace trailing, with ]

split -l 30000 output.json
sed -i '1s/^/[/;$s/,$/]/' x*

import & make a batch process to do all sliced files

dyngodb2 < db.wiki.save(json('xaa'))

{
  "operation": "echo",
  "TableName": "Thread",
  "Key": {
      "title-index": "!"
        }
}