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From 刘兵兵 <rucb...@gmail.com>
Subject when i use the OrderPreservingPartition, the load is very imbalance
Date Mon, 26 Apr 2010 01:18:52 GMT
i do some INSERT ,because i will do some scan operations, i use the
OrderPreservingPartition method.

the state of the cluster is showed below.

as i predicated the load is very imbalance, and some of the nodes down (in
some nodes,the Cassandra processes died and in others the processes are

alive but they still down),

so i have two questions:

1)how to do balance after the insert ends?

2)why the nodes died? how to make them up again (when the situation is that
the process is alive but the node'state is down)

thx

10.37.17.241  Up         47.65 GB
0p6ovvUXMJ4cdd1L                           |<--|
10.37.17.234  Up         67.41 GB
5OxiS2DKBZLeISPg                          |   ^
10.37.17.235  Up         67.54 GB
7UDcS0SToePuQACe                         v   |
10.37.17.246  Up         555 bytes
OCvC3nqKLeKA5n0I                           |   ^
10.37.17.233  Up         830 bytes
SJp6cQRNox52av2Y                           v   |
10.37.17.249  Up         830 bytes
SxVmCVcruOpoS48B                           |   ^
10.37.17.247  Up         555 bytes
TGctCMvfNuRo7RjS                           v   |
10.37.17.245  Up         555 bytes
j2smY0OOtQ0SeeHY                           |   ^
10.37.17.250  Up         830 bytes
jNwBPchW58i5tGxp                           v   |
10.37.17.248  Up         830 bytes
jYWaJC93OyMdWDaN                           |   ^
10.37.17.237  Up         830 bytes
mPwhLOsKlbPart6j                           v   |
10.37.17.236  Up         830 bytes
noh0t8HJgw4hmz7I                           |   ^
10.37.17.244  Up         555 bytes
q8c8SPYEkWEzmFcR                           v   |
10.37.17.238  Up         555 bytes
rIuuq3AR4DVK989X                           |   ^
10.37.17.242  Up         555 bytes
smebTmIvQBMG56Zf                           v   |
10.37.17.243  Up         555 bytes
tWTYyiqAKQVw7197                           |   ^
10.37.17.232  Up         830 bytes
uVdBQkR9Dszm5deK                           v   |
10.37.17.239  Up         555 bytes
xXQkDQn1vvg8e1xS                           |   ^
10.37.17.240  Up         555 bytes
yQRrq9RG2dUsHUyR                           |-->|


-- 
Bingbing Liu

Web and Mobile Data Management lab

Renmin University  of  China

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