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my Cassandra version is 1.2.4 and i'm trying to upgrade it to 2.0.5 and i know that in the first part i have to upgrade it to 1.0.14 and after that try to upgrade it to the 2.0.5 ,

when I try to run nodetool -h localhost removenode Host ID it gives me :

Exception in thread "main" java.lang.UnsupportedOperationException: Cannot remove self at org.apache.cassandra.service.StorageService.removeNode(StorageService.java:3199) .....

before running that command i tried nodetool upgradesstables

what is the problem ? and how can i resolve it ?

OS:Ubuntu 12.04 lts

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