-Re: [Question: replication] why only one regionserver is used during replication? 0.94.9
Demai Ni 2013-08-27, 19:33
J-D, thanks for the tip.
On Tue, Aug 27, 2013 at 11:40 AM, Jean-Daniel Cryans <[EMAIL PROTECTED]>wrote:
> Region servers replicate data written to them, so look at how your regions
> are distributed.
> On Tue, Aug 27, 2013 at 11:29 AM, Demai Ni <[EMAIL PROTECTED]> wrote:
> > hi, guys,
> > I am using hbase 0.94.9. And setup replication from a 4-nodes master(3
> > regserver) to a 3-nodes slave(2 regserver).
> > I can tell that all source regservers can successfully replicate data.
> > However, it seems for each particular table, only one regserver will
> > its replication at each given table.
> > For example, I am using YCSB to load 1,000,000 rows with workloada, with
> > threads. During the load period, I looked at the ageOfLastShippedOp and
> > sizeOfLogQueue. I can tell one of the regserver from Master is doing the
> > replication. While values of both age and sizeOfLog are growing, another
> > two regserver doesn't come into help.
> > So does that mean: for each table and process, only one regionserver will
> > do the replication regardless how long the queue is? Or did I miss some
> > setup configuration?
> > Thanks.
> > Demai