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From Paolo Crosato <>
Subject nodetool repair stalled
Date Wed, 08 Jan 2014 16:52:32 GMT

I have two nodes with Cassandra 2.0.3, where repair sessions hang for an 
undefinite time. I'm running nodetool repair once a week on every node, 
on different days. Currently I have like 4 repair sessions running on 
each node, one since 3 weeks and none has finished.
Reading the logs I didn't find any exception, apparently one of the 
repair session got stuck at this command:

  INFO [AntiEntropySessions:10] 2014-01-05 01:00:02,804 
(line 116) [repair #5385ea40-759c-11e3-93dc-a1357a0d9222] requesting 
merkle trees for events (to [/, /])

Has anybody any suggestion on why a nodetool repair might be stuck and 
how to debug it?


Paolo Crosato

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