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From Marco Matarazzo <>
Subject nodetool repair with vnodes
Date Sun, 17 Feb 2013 11:51:21 GMT

I'm trying to run "nodetool repair" on a Cassandra 1.2.1 cluster of 3 nodes with 256 vnodes

On a pre-1.2 cluster I used to launch a "nodetool repair" on every node every 24hrs. Now I'm
getting a differenf behavior, and I'm sure I'm missing something.

What I see on the command line is: 

[2013-02-17 10:20:15,186] Starting repair command #1, repairing 768 ranges for keyspace goh_master
[2013-02-17 10:48:13,401] Repair session 3d140e10-78e3-11e2-af53-d344dbdd69f5 for range (6556914650761469337,6580337080281832001]
(…repeat the last line 767 times)

…so it seems to me that it is running on all vnodes ranges.

Also, whatever the node which I launch the command on is, only one node log is "moving" and
is always the same node. 

So, to me, it's like the "nodetool repair" command is running always on the same single node
and repairing everything.

I'm sure I'm making some mistakes, and I just can't find any clue of what's wrong with my
nodetool usage on the documentation (if anything is wrong, btw). Is there anything I'm missing

Marco Matarazzo

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