(Thanks for jumping in Billy)
Smaller Scans? (This is good on Scans in 1.1.+ which you seem to be on:
https://blogs.apache.org/hbase/entry/scan_improvements_in_hbase_1)
Otherwise look at other factors. Are the servers loaded? GC on
client/server or resources being taken up by adjacent processes;
Disclaimer: this is what I think I know and I'm not an HBase contributor...
Anytime we get scanner timeouts like that, we first expand the timeout
itself like you're doing to fix the short-term problem. But then we look at
our rowkey design and what we're doing. Timeouts like that are usually