Thanks, to be on the same page taking help of below scenario:    hdfs snapshottable location /a/b/ has a file c which is snapshotted. Consider a scenario where c is deleted from hdfs using cli hdfs -rm -r -skipTrash (NN transaction happened and hdfs cli command doesn't show up the file anymore) and then a new file is created with same content/size and name.   - What gets stored in hdfs? whats the delta that snapshot add in hdfs in this case?    --> is it just that snapshot still holds c as block in hdfs in addition to the same file that was created in hdfs    --> NN resource used to maintain both of their metadata in heap?   is this all or there is more to it .   Regards   ... View more