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From Philippe <>
Subject Re: batch mutates & throughput
Date Sun, 07 Aug 2011 22:54:51 GMT
Quick followup.
I have pushed the RPC timeout to 30s. Using Hector, I'm doing 1 thread doing
batches of 10 mutates at a time so that's even slower than when I was doing
16 threads in parallel doing non-batched mutations.
After a couple hundred execute() calls, I get a timeout for every node; I
have a 15 second grace period between retries. tpstats indicate no pendings
on any of the nodes. I never recover from that

I then set the batch size to one and it seems to work a lot better. The only
difference I note is that the Mutator.execute() method returns a result than
sometimes has a null host and 0 microsecond time in the batch sizes of ten
but never in batch sizes of 1.

I'm stumped ! Any ideas ?


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