Can we get some more information... - What is countPendingHints showing ? Are they all for the same row ? - What about listEndpointsPendingHints are their different end points listed there ? - Can you turn up the logging to DEBUG on one of the machines that has the increasing number of hints ? When a node is asked to store a hint it will log a message with "Adding hint for" You should then see a message that includes "applied. Sending response to" - Number of nodes and RF ?
ReadRepair does not use HintedHandoff as part of it's processing. Hope that helps. Aaron On 19 Mar 2011, at 05:10, Shotaro Kamio wrote: > Hi, > > When I looking at "countPendingHints" in HintedHandoffManager via jmx, > I found that pending hints increases even when my cluster handles only > reads with quorum from clients. > The count decreases when I see it in long period (e.g., in an hour). > But it can increase in several thousands in short period (for > instance, in a few seconds. even in minutes some cases). My cluster > looks healthy at that time. > Is it normal behavior? I thought that hints are created only when data > are written and a node is down. Does it increase with read repair? > I'm waiting for finishing hinted handoff. But it takes long time. > I'm using cassandra 0.7.4. > > > Best regards, > Shtoaro
