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From xavier manach <>
Subject Cause possible for a "cound not connect" TTransportException.NOT_OPEN , during load datas ?
Date Thu, 20 May 2010 18:14:44 GMT

  I am neebie in Cassandra. I study and compare performance of databases for
choose my future architecture.

  I try to load a lot of datas in cassandra.
I use python with protocol thrift (very simple, whithout threading)
I do sequentials requests : client.batch_mutate and client.get_slice.
(around 1M mutate y 0.3M get mixed for 10 columns family)
I didn't wait between each request.
I use only one node (I have the same probleme with 2 nodes)

  It's start fine, but in the middle of the load
during  an
I have this exception  :
  TTransportException.NOT_OPEN error
with the message : could not connect to <IP>:<PORT>

  The server didn't respond for seconds ( between 1 and 30)
After,  it's work again...

  I turn the log to DEBUG,
When the server did'nt respond, I have this message :
  Disseminating load info...
 Whats mean this ?

  I had forget something ? What is wrong ?
How avoid it ?

Thanks for your help.

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