Re: Ignite client thread amount control

[vkulichenko <va...@gmail.com>]

Hi Jeff,

Please properly subscribe to the mailing list so that the community can
receive email notifications for your messages. To subscribe, send empty
email to user-subscribe@ignite.apache.org and follow simple instructions in
the reply.


Jeff Jiao wrote
> Every time when I start a Ignite client (using default settings), it
> generates about 60 threads.
> 
> My use case is:
> My service has an Ignite cache component which allows users to query from
> it.
> I write a IgniteQueryPool, this pool will initialize 5~10 ignite clients, 
> If user use my IgniteQueryPool, it will cause their client side thread
> amount become very large(add 300-600)
> Is there a way to control Ignite client thread amount?

Ignite instance is thread-safe and can be reused by all threads within a
single JVM. So there is no need to create a pool of clients in your
application. Just start one client and use it everywhere.

-Val



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Re: Ignite client thread amount control

[Vladislav Pyatkov <vl...@gmail.com>]

Not, it is not. One instance of Ignite client can to support several
parallel queries.
You can use client like this:

*Ignition.setClientMode(true);*
*Ignite ignite = Ignitin.strt(cfg)*
*threads[i] = new Thread() {*
*    @Override public void run() {*
* try (QueryCursor cursor = ignite.cache(name).query(new
SqlFieldsQuery(sql))) {*
* for (Object obj : cursor) {*
* // Ops.*
* }*
* }*
*    }*
*};*

*for (Thread thread : threads)*
* thread.join();*

On Tue, Oct 25, 2016 at 6:12 AM, Jeff Jiao <je...@gmail.com> wrote:

> Hi vkulichenko,
>
> Thanks for the reply! I already subscribed.
>
> What if I have multiple users query at the same time? One user hold the
> Ignite client and the others just wait?
>
>
>
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> View this message in context: http://apache-ignite-users.
> 70518.x6.nabble.com/Ignite-client-thread-amount-control-tp8434p8455.html
> Sent from the Apache Ignite Users mailing list archive at Nabble.com.
>



-- 
Vladislav Pyatkov

Re: Ignite client thread amount control

[Jeff Jiao <je...@gmail.com>]

Hi vkulichenko,

Thanks for the reply! I already subscribed.

What if I have multiple users query at the same time? One user hold the
Ignite client and the others just wait?



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