Can you guys help me with these questions?
1) Consistency guarantees for reads in Hbase:
What happens when you issue a direct bulk incremental update without
using the API?
Say, a new storefile is created in a region through the bulk tool. Already
existing scanners will not have an effect on the new updates. But new scanners
would. Is this correct?
And what will happen to the block cache? Are they marked dirty after the
new upload?
2) Regionserver failures:
I know that when a region server is running properly but is unreachable
for some time (a few minutes), then zk will change its state to expired. And
when the RS is reachable again, it will access the zk state, know that it is
viewed dead and will throw an exception. Can you guys let me know if I am
correct?
What if a regionserver is unreachable for a longer time (say an hour) and
then is again reachable? Does it have the same effect as the previous case?
Thank you
Vidhya
