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From Paulo Motta <pauloricard...@gmail.com>
Subject Output of "nodetool ring" with virtual nodes
Date Tue, 15 Oct 2013 18:45:13 GMT
Hello,

I recently did the "Enabling virtual nodes on an existing production
cluster" procedure (
http://www.datastax.com/documentation/cassandra/1.2/webhelp/cassandra/configuration/configVnodesProduction_t.html),
and noticed that the output of the command "nodetool ring" changes
significantly when virtual nodes are enabled in a new data center.

Before, it showed only 1 token per node, now it shows 256 tokens per node
(output below). So, that means 256*N entries, which makes the command
unreadable, while before it was pretty useful to check the cluster status
in a human-readable format. Moreover, the command is taking much longer to
execute.

Is this expected behavior, or did I make any mistake during the procedure?

Cassandra version: 1.2.10

Before it was like this:

Datacenter: VNodesDisabled
==========
Replicas: 3

Address          Rack        Status State   Load            Owns
     Token

    28356863910078205239614050619314017619
AAA.BBB.CCC.1   x         Up     Normal  236.49 GB       20.83%
 113427455640312821154458002477256070480
AAA.BBB.CCC.2   x         Up     Normal  347.6 GB        29.17%
 77981375752715064543690004203113548455
AAA.BBB.CCC.3   x         Up     Normal  332.46 GB       37.50%
 106338614526609105785626408013334622686
AAA.BBB.CCC.4   x         Up     Normal  198.94 GB       20.83%
 141784319550391026443072753090570088104
AAA.BBB.CCC.5   x         Up     Normal  330.68 GB       33.33%
 92159807707754167187997289512070557265
AAA.BBB.CCC.6   x         Up     Normal  268.64 GB       25.00%
 155962751505430129087380028400227096915
AAA.BBB.CCC.7   x         Up     Normal  262.43 GB       25.00%
 163051967482949680409533666060055601314
AAA.BBB.CCC.8   x         Up     Normal  200.18 GB       16.67%
 1
AAA.BBB.CCC.9   x         Up     Normal  189.13 GB       16.67%
 120516671617832372476611040132084574885
AAA.BBB.CCC.10  x         Up     Normal  220.7 GB        25.00%
 42535295865117307932921025928971026429
AAA.BBB.CCC.11  x         Up     Normal  259.36 GB       25.00%
 35446079887597756610768088274142522024
AAA.BBB.CCC.12  x         Up     Normal  270.32 GB       25.00%
 28356863910078205088614550619314017619


Now it is like this:
Datacenter: VNodesEnabled
==========
Replicas: 3

Address          Rack        Status State   Load            Owns
     Token

    168998414504718061309167200639854699955
XXX.YYY.ZZZ.1    y          Up     Normal  122.84 KB       0.00%
    4176479009577065052560790400565254
XXX.YYY.ZZZ.1    y          Up     Normal  122.84 KB       0.00%
    291517050854558940844583227825291566
XXX.YYY.ZZZ.1    y          Up     Normal  122.84 KB       0.00%
    389126351568277133928956802249918052
XXX.YYY.ZZZ.1    y          Up     Normal  122.84 KB       0.00%
    504218791605899949008255495493335240
XXX.YYY.ZZZ.2    y          Up     Normal  122.84 KB       0.00%
    4176479009577065052560790400565254
XXX.YYY.ZZZ.2    y          Up     Normal  122.84 KB       0.00%
    291517050854558940844583227825291566
XXX.YYY.ZZZ.2    y          Up     Normal  122.84 KB       0.00%
    389126351568277133928956802249918052
XXX.YYY.ZZZ.2    y          Up     Normal  122.84 KB       0.00%
    504218791605899949008255495493335240
XXX.YYY.ZZZ.3    y          Up     Normal  122.84 KB       0.00%
    4176479009577065052560790400565254
XXX.YYY.ZZZ.3    y          Up     Normal  122.84 KB       0.00%
    291517050854558940844583227825291566
XXX.YYY.ZZZ.3    y          Up     Normal  122.84 KB       0.00%
    389126351568277133928956802249918052
XXX.YYY.ZZZ.3    y          Up     Normal  122.84 KB       0.00%
    504218791605899949008255495493335240
XXX.YYY.ZZZ.4    y          Up     Normal  122.84 KB       0.00%
    4176479009577065052560790400565254
XXX.YYY.ZZZ.4    y          Up     Normal  122.84 KB       0.00%
    291517050854558940844583227825291566
XXX.YYY.ZZZ.4    y          Up     Normal  122.84 KB       0.00%
    389126351568277133928956802249918052
XXX.YYY.ZZZ.4    y          Up     Normal  122.84 KB       0.00%
    504218791605899949008255495493335240
XXX.YYY.ZZZ.5    y          Up     Normal  122.84 KB       0.00%
    4176479009577065052560790400565254
XXX.YYY.ZZZ.5    y          Up     Normal  122.84 KB       0.00%
    291517050854558940844583227825291566
XXX.YYY.ZZZ.5    y          Up     Normal  122.84 KB       0.00%
    389126351568277133928956802249918052
XXX.YYY.ZZZ.5    y          Up     Normal  122.84 KB       0.00%
    504218791605899949008255495493335240
XXX.YYY.ZZZ.6    y          Up     Normal  122.84 KB       0.00%
    4176479009577065052560790400565254
XXX.YYY.ZZZ.6    y          Up     Normal  122.84 KB       0.00%
    291517050854558940844583227825291566
XXX.YYY.ZZZ.6    y          Up     Normal  122.84 KB       0.00%
    389126351568277133928956802249918052
XXX.YYY.ZZZ.6    y          Up     Normal  122.84 KB       0.00%
    504218791605899949008255495493335240
....

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