So suppose I want to capture metadata about a table across all of the regions for that table.
Has anyone used a coprocessor to capture a region’s statistics and push them up to ZK where its stored by (table, region, <metadata object>) and then a table wide value is also stored based on a computational update? So if I wanted to store the row counts for each region of a table, each region would update its record in ZK on each insert / delete (can you easily remove a tombstone?) and then update the computational value? (Assuming you could lock those values for a short enough time to do the quick computation. If not, then it can be computed on the fly) Has this been done? Thoughts?
