Hi,
I have a hadoop/hbase cluster running on 9 machines (only 8 GB RAM, 1 TB
drives), and have recently noticed that Gets from Hbase have slowed down
significantly. I'd say at this point I'm not getting more than 100/sec when
using the Hbase Java API. DFS-wise, there's plenty of space left (using less
than 10%), and all of the servers seem okay. The tables use LZO, and have
blockcache disabled (we were having problems inserting up to a billion rows
with it on, and read in the mailing list somewhere that it might help).
The primary table has only 4 million rows at the moment. I created a new test
table with only 200,000, and it was running 100/sec as well.
I'm not sure what the problem could be (paging?), or some configuration that
can be adjusted?
Any ideas? I can show our configuration if that's helpful, I just wasn't sure
what info would be helpful and what would be extraneous.
Thanks,
- Ruben
