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From Alex Popescu <>
Subject Re: Datastax Cassandra Java Driver executeAsynch question.
Date Mon, 12 Jan 2015 18:35:48 GMT
Hi Bogdan,

This question would be better on the specific driver's mailing list.
Assuming you are using the Java driver the mailing list is [1]. As for your
question look into PoolingOptions [2] that you pass when configuring the
Cluster instance.



On Mon, Jan 12, 2015 at 9:58 AM, Batranut Bogdan <> wrote:

> Hello all,
> In my implementation of the FutureCallBack<> interface in the onSuccess
> method, I put Thread.currentThread.getName(). What I saw was that there is
> a ThreadPool... That is all fine, but seems to me that the pool does not
> have that many threads. About 10 from my observations - I did not bother to
> get the exact number. Why? Well because when I query cassandra I have a
> list of about 6000 cf keys. I traverse the list and executeAsynch a
> prepared statement for each of these. I have seen that during the execution
> the driver is waiting for free threads to continue if all the threads in
> the pool are waiting for response from C*.
> How can I increase the number of threads that the driver uses to query
> Cassandra?



Alex Popescu
Sen. Product Manager @ DataStax

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