> the log file shows as follows, not sure what does 'Couldn't find cfId=1000' > means(google just returned useless results):
Those should be the indication that the schema is wrong on the node. Reads and writes are being received from other nodes pertaining to column families it does not know about. I don't know, without investigation, why the instructions from the wiki don't work though. You did the procedure of restarting the node with the migrations/schema removed, right? -- / Peter Schuller (@scode on twitter)