LengthCachingDataStore configuration

datastore-list-example.txt

4432|dd10bca036f3134352c63e534d4568a3d2ac2fdc
32167|dd10bca036f3134567c63e534d4568a3d2ac2fdc

pre-populate.sh

s3cmd ls s3://bucket-name \ 
 | awk '{ split($4,url,"/"); print $3"|"url[4] }' \
 | sed -e 's/\-//g' > datastore-list.txt

repository.xml

<!-- replace the current datastore configuration with: -->

<DataStore class="org.apache.jackrabbit.oak.upgrade.blob.LengthCachingDataStore">
  <param name="mappingFilePath" value="/path/to/datastore-list.txt" />
  <param name="delegateClass" value="org.apache.jackrabbit.aws.ext.ds.S3DataStore" />
  <param name="delegateConfigFilePath" value="/path/to/s3datastore.properties"/>
</DataStore>

s3datastore.properties

proactiveCaching=false
recLengthCacheSize=10000
config=/path/to/crx-quickstart/repository/aws.properties
secret=boom