removed unecessary output
Experiment II: rotating trees around the cloud and refining them
on each node. Different approaches to merge refined leaf with a new leaf
or a new subtree.
Experiment III: after rotating node around the cloud we replace leaf by
a new leaf with current histogram.
Back to 1<<22 length chunks.
- chunks 1<<18 causes non-determinism in CM voting (?)
Experiment IV: trees has 2-round pass around the cloud.
+ The histograms are reconstructed back.
+ We remember a split node producer
Experiment V: showing that we cannot simply merge histograms of leafs or replace
leaf by refined subtree. We need to transfer data from other nodes to
make a proper refinement. Class RefinedTreeMarkAndLogRows show how many
rows we need for data transfers.
Experiment VI: trees are rotated around cloud and rows which causes
a collision with prediction are stored as filters.
In the second stage, all these rows are loaded by original node and
whole local forest is rebuilt.
Enabling non-user keys listing.
Update of experiment VI - filters merged per remote node, statistics
collected.