Hi All
I saw something curious when I restarted our cluster following a full shutdown
whereby the result of calling nodetool getendpoints showed inconsistent results
as each node was started in turn.
Prior to shutdown, we had the following:
$ nodetool status
Datacenter: dc1
===============
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns (effective) Host ID
Rack
UN 10.0.3.11 46.53 GiB 256 51.1%
35dcbc33-efb3-4c98-9063-aa451e6e0c7f rack1
UN 10.0.3.12 44.44 GiB 256 48.9%
8c13e94a-2c8e-43a3-9fb0-11d4b5b4606f rack1
UN 10.0.3.21 41.42 GiB 256 45.4%
6b619cc8-e398-4e48-8542-09d84c3710f6 rack2
UN 10.0.3.22 49.55 GiB 256 54.6%
962b04ee-e135-4ed5-87f9-7463c0b18860 rack2
UN 10.0.3.31 45.76 GiB 256 50.2%
2a90ac41-a741-472f-8c74-a382a24eb65f rack3
UN 10.0.3.32 45.2 GiB 256 49.8%
e7dc5e68-bbde-4f6b-9426-43cf13c679c8 rack3
$ nodetool getendpoints ospreypro Users 39befa1f-dee1-48c4-9702-e8e8332b84df
10.0.3.12
10.0.3.22
10.0.3.32
As each node was started up, the results differed as follows:
administrator@OspreyProSRV1-R1N1:~$ nodetool getendpoints ospreypro Users
39befa1f-dee1-48c4-9702-e8e8332b84df
10.0.3.11
administrator@OspreyProSRV1-R1N1:~$ nodetool getendpoints ospreypro Users
39befa1f-dee1-48c4-9702-e8e8332b84df
10.0.3.11
10.0.3.12
administrator@OspreyProSRV1-R1N1:~$ nodetool getendpoints ospreypro Users
39befa1f-dee1-48c4-9702-e8e8332b84df
10.0.3.11
10.0.3.12
10.0.3.21
administrator@OspreyProSRV1-R1N1:~$ nodetool getendpoints ospreypro Users
39befa1f-dee1-48c4-9702-e8e8332b84df
10.0.3.11
10.0.3.12
10.0.3.22
administrator@OspreyProSRV1-R1N1:~$ nodetool getendpoints ospreypro Users
39befa1f-dee1-48c4-9702-e8e8332b84df
10.0.3.12
10.0.3.22
10.0.3.31
administrator@OspreyProSRV1-R1N1:~$ nodetool getendpoints ospreypro Users
39befa1f-dee1-48c4-9702-e8e8332b84df
10.0.3.12
10.0.3.22
10.0.3.32
Eventually, the endpoints settles on the expected values.
Seeing as the token ranges are stored in system.peers (stored on each node),
why would I see different endpoints as I do?
Regards
Marcel Villet
Osprey Pro Team Leader and Lead Architect
CT LAB (PTY) LTD - Bringing Quality To Power
T +27 (0)21-880-9915 | F +27 (0)21-880-1088 |
www.ctlab.com<http://www.ctlab.com/> |
www.pq-portal.com<http://www.pq-portal.com/rdPage.aspx>
15 Termo Lane, Techno Park, Stellenbosch, South Africa, 7600 | PO Box 897,
Stellenbosch,7599.
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