Yes,
I tested the following by restarting the cluster and waiting approximately
5-10 minutes for its initial ramp up. There are no clients asking for data.
In the following example KVM15 was randomly assigned to serve the META
Table.
root@KVM15:~# lsof -n | grep :60020- | sed 's/.*->//;s/:.*//' | sort | uniq
-c | sort -nr
1 10.40.178.180
1 10.40.178.179
1 10.40.178.176
1 10.40.178.170
1 10.40.178.169
1 10.40.178.164
1 10.40.178.162
1 10.40.178.160
1 10.40.178.130
1 10.40.178.129
1 10.40.178.128
1 10.40.178.110
1 10.40.178.109
1 10.40.178.108
The following returned nothing
root@KVM15:~# lsof -n | grep :9090- | sed 's/.*->//;s/:.*//' | sort | uniq
-c | sort -nr
This picture shows the iftop for KVM15 LeftSide | KVM03 Top Right
| KVM05
Bottom Right
In this example it was running for about 1-2 minutes before i took the
screen shot and had already transmitted ~2GB of data.
https://www.dropbox.com/s/iy0rkgljyo1872m/KVMThroughputExample.png?dl=0
At the 10 minute mark KVM15 had transmitted ~18GB of data.
https://www.dropbox.com/s/cgpo1krebrp2jzh/KVMThroughputExample10.png?dl=0
Cheers,
Jon
PS. I'm currently interested in moving from 5.1.2-1.cdh5.1.2.p0.3 to
5.2.1-1.cdh5.2.1.p0.12
and from HBASE 0.98.1 to HBASE 0.98.6. But as im in no rush, I will wait
until you guys feel you know what this issue is.
--
View this message in context:
http://apache-hbase.679495.n3.nabble.com/Region-Server-Thread-with-a-Single-High-Idle-CPU-tp4066876p4067014.html
Sent from the HBase User mailing list archive at Nabble.com.
