incubator-cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Ran Tavory <ran...@gmail.com>
Subject Re: MultiThread Client problem with thrift
Date Tue, 22 Dec 2009 12:30:38 GMT
Would connection pooling work for you?
This Java client http://code.google.com/p/cassandra-java-client/ has
connection pooling.
I haven't put the client under stress yet so I can't testify, but this may
be a good solution for you

On Tue, Dec 22, 2009 at 2:22 PM, Richard Grossman <richiesgr@gmail.com>wrote:

> I agree it's solve my problem but can give a bigger one.
> The problem is I can't succeed to prevent opening a lot of connection
>
>
> On Tue, Dec 22, 2009 at 1:51 PM, Jaakko <rosvopaallikko@gmail.com> wrote:
>
>> Hi,
>>
>> I don't know the particulars of java implementation, but if it works
>> the same way as Unix native socket API, then I would not recommend
>> setting linger to zero.
>>
>> SO_LINGER option with zero value will cause TCP connection to be
>> aborted immediately as soon as the socket is closed. That is, (1)
>> remaining data in the send buffer will be discarded, (2) no proper
>> disconnect handshake and (3) receiving end will get TCP reset.
>>
>> Sure this will avoid TIME_WAIT state, but TIME_WAIT is our friend and
>> is there to avoid packets from old connection being delivered to new
>> incarnation of the connection. Instead of avoiding the state, the
>> application should be changed so that TIME_WAIT will not be a problem.
>> How many open files you can see when the exception happens? Might be
>> that you're out of file descriptors.
>>
>> -Jaakko
>>
>>
>> On Tue, Dec 22, 2009 at 8:17 PM, Richard Grossman <richiesgr@gmail.com>
>> wrote:
>> > Hi
>> > To all is interesting I've found a solution seems not recommended but
>> > working.
>> > When opening a Socket set this:
>> >    tSocket.getSocket().setReuseAddress(true);
>> >    tSocket.getSocket().setSoLinger(true, 0);
>> > it's prevent to have a lot of connection TIME_WAIT state but not
>> > recommended.
>> >
>>
>
>

Mime
View raw message