Sounds like a job for “nodetool scrub”, which rewrites the SStable rows in the correct order. After the scrub, nodetool repair should succeed.


From: Haithem Jarraya []
Sent: Wednesday, May 01, 2013 5:46 PM
Subject: Repair session failed




I am seeing this error message during repair,


 INFO [AntiEntropyStage:1] 2013-05-01 14:30:54,300 (line 764) [repair #ed104480-b26a-11e2-af9b-05179fa66b76] mycolumnfamily is fully synced (1 remaining column family to sync for this session)

ERROR [Thread-12725] 2013-05-01 14:30:54,304 (line 2420) Repair session failed:

java.lang.IllegalArgumentException: Requested range intersects a local range but is not fully contained in one; this would lead to imprecise repair

        at org.apache.cassandra.service.AntiEntropyService.getNeighbors(

        at org.apache.cassandra.service.AntiEntropyService$RepairSession.<init>(

        at org.apache.cassandra.service.AntiEntropyService$RepairSession.<init>(

        at org.apache.cassandra.service.AntiEntropyService.submitRepairSession(

        at org.apache.cassandra.service.StorageService.forceTableRepair(

        at org.apache.cassandra.service.StorageService$4.runMayThrow(


        at java.util.concurrent.Executors$

        at java.util.concurrent.FutureTask$Sync.innerRun(





what does it mean imprecise repair?

Is it maybe because I went over the gcgrade period?

What you do if you go over that period?

Any hint will be valuable, 

Also I noticed when I run a repair on different node, I see a message like this


[2013-05-01 14:30:54,305] Starting repair command #5, repairing 1120 ranges for keyspace struqrealtime


I have couple of questions, why I have repair command #5?

And why the ranges values changes from one node to another?



Many Thanks,




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