I was just looking at
http://zookeeper.apache.org/bookkeeper/docs/r4.2.0/and thinking how I
never heard of anyone actually using Bookkeeper in
production. Is there a "Powered By" page somewhere?
Also, the Overview mentions one use case - writing of the WAL into BK. Are
there other good use cases that Bookkeeper is good for?
Solr & ElasticSearch Support