Re: How to start and use ignite in Tomcat
Hi, Yes, you can start an Ignite client node inside of your application container and communicate with the cluster through it. > however, the exception is about "class org.apache.ignite.IgniteException: > Ignite instance with this name has already been started: b2c_acc"… This exception happens in cases when you are starting several Ignite nodes with the same name inside of a single JVM process. If you need to have several Ignite instances inside of a single JVM process then you have to set a unique name for every node using IgniteConfiguration.setGridName. If it’s not your case then you should look through your code finding a place that start the node instance one more time. — Denis > On May 6, 2016, at 2:04 PM, minisoft_rm wrote: > > Hello experts~~~ > my goal is to use ignite(in standalone server style) from tomcat webapp. > And I am trying to start ignite client in web app owned logic(programming > it, not by ServletContextListenerStartup), does it work? > > in my project, I want to hide one table (table in mysql DB) by putting > ignite layer on above of it. > > indeed, ignite doesn't support insert/update/delete so far. So I did some > coding to translate them to put operations > > however, the exception is about "class org.apache.ignite.IgniteException: > Ignite instance with this name has already been started: b2c_acc"... what > is the root cause of it? might it be only one ignite instance there per > jvm? and where/who start ignite several times? > > > > -- > View this message in context: > http://apache-ignite-users.70518.x6.nabble.com/How-to-start-and-use-ignite-in-Tomcat-tp4776p4822.html > Sent from the Apache Ignite Users mailing list archive at Nabble.com.
Re: How to start and use ignite in Tomcat
Hello experts~~~ my goal is to use ignite(in standalone server style) from tomcat webapp. And I am trying to start ignite client in web app owned logic(programming it, not by ServletContextListenerStartup), does it work? in my project, I want to hide one table (table in mysql DB) by putting ignite layer on above of it. indeed, ignite doesn't support insert/update/delete so far. So I did some coding to translate them to put operations however, the exception is about "class org.apache.ignite.IgniteException: Ignite instance with this name has already been started: b2c_acc"... what is the root cause of it? might it be only one ignite instance there per jvm? and where/who start ignite several times? -- View this message in context: http://apache-ignite-users.70518.x6.nabble.com/How-to-start-and-use-ignite-in-Tomcat-tp4776p4822.html Sent from the Apache Ignite Users mailing list archive at Nabble.com.
Re: How to start and use ignite in Tomcat
Hi,
Please clarify what are you trying to achieve?
>From logs I see the Ignite grid instance tries to start several times.
Please check the ServletContextListenerStartup class
for example how to correctly start Ignite in the servlet environment:
https://github.com/apache/ignite/blob/master/modules/web/src/main/java/org/apache/ignite/startup/servlet/ServletContextListenerStartup.java
2016-05-05 17:24 GMT+03:00 Andrey Gura :
> Hi,
>
> In order to start clint node you should just execute code like this:
>
> Ignition.setClientMode(true);
> Ignition.start();
>
> In this case client node with default configuration will be started. Of
> course you can provide own IgniteConfiguration programatically:
>
> IgniteConfiguration cfg = new IgniteConfiguration();
> cfg.setClientMode(true);
> // ... other settings
> Ignition.start(cfg);
>
> or using Spring configuration files:
>
> http://www.springframework.org/schema/beans";
>xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
>xsi:schemaLocation="http://www.springframework.org/schema/beans
>
> http://www.springframework.org/schema/beans/spring-beans.xsd";>
>
> class="org.apache.ignite.configuration.IgniteConfiguration">
>
>
>
>
>
> class="org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi">
>
>
>
>
> class="org.apache.ignite.spi.discovery.tcp.ipfinder.multicast.TcpDiscoveryMulticastIpFinder">
>
>
>
> 127.0.0.1:47500..47509
>
>
>
>
>
>
>
>
>
>
>
> If you want use JDBC drievr for connection to Ignite cluster there is no
> need to create any client nodes.
>
>
> On Thu, May 5, 2016 at 5:33 AM, minisoft_rm
> wrote:
>
>> Dear all,
>> i searched a number of topics here. but still don't know how to start and
>> use ignite (in client mode) from Tomcat you know, I launched the
>> standalone ignite as server node.
>>
>> my code in tomcat web app like this:"
>>
>> this.ignite =
>> Ignition.start(ClientConfigurationFactory.createConfiguration());
>>
>>
>> Class.forName("org.apache.ignite.IgniteJdbcDriver");
>> this.conn = DriverManager
>>
>> .getConnection("jdbc:ignite:cfg://cache=b2c_accCache
>> @file:///Users/i306576/Documents/ignite/apache-ignite-fabric-1.5.0.final-bin/examples/config/ignite-jdbc.xml");
>> this.cartCacher = new CartCacher();
>> this.ic = ignite.cache("b2c_accCache");
>>
>> "
>>
>> the console log show some error mes I don't understand..."
>> Caused by: class org.apache.ignite.IgniteCheckedException: Ignite instance
>> with this name has already been started: b2c_acc
>> "
>>
>> :-( the thing is this kind of client mode is ok without Tomcat...
>>
>> please help~~
>>
>>
>>
>>
>> --
>> View this message in context:
>> http://apache-ignite-users.70518.x6.nabble.com/How-to-start-and-use-ignite-in-Tomcat-tp4776.html
>> Sent from the Apache Ignite Users mailing list archive at Nabble.com.
>>
>
>
>
> --
> Andrey Gura
> GridGain Systems, Inc.
> www.gridgain.com
>
--
Best regards,
Alexei Scherbakov
Re: How to start and use ignite in Tomcat
Hi,
In order to start clint node you should just execute code like this:
Ignition.setClientMode(true);
Ignition.start();
In this case client node with default configuration will be started. Of
course you can provide own IgniteConfiguration programatically:
IgniteConfiguration cfg = new IgniteConfiguration();
cfg.setClientMode(true);
// ... other settings
Ignition.start(cfg);
or using Spring configuration files:
http://www.springframework.org/schema/beans";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd";>
127.0.0.1:47500..47509
If you want use JDBC drievr for connection to Ignite cluster there is no
need to create any client nodes.
On Thu, May 5, 2016 at 5:33 AM, minisoft_rm wrote:
> Dear all,
> i searched a number of topics here. but still don't know how to start and
> use ignite (in client mode) from Tomcat you know, I launched the
> standalone ignite as server node.
>
> my code in tomcat web app like this:"
>
> this.ignite =
> Ignition.start(ClientConfigurationFactory.createConfiguration());
>
>
> Class.forName("org.apache.ignite.IgniteJdbcDriver");
> this.conn = DriverManager
>
> .getConnection("jdbc:ignite:cfg://cache=b2c_accCache
> @file:///Users/i306576/Documents/ignite/apache-ignite-fabric-1.5.0.final-bin/examples/config/ignite-jdbc.xml");
> this.cartCacher = new CartCacher();
> this.ic = ignite.cache("b2c_accCache");
>
> "
>
> the console log show some error mes I don't understand..."
> Caused by: class org.apache.ignite.IgniteCheckedException: Ignite instance
> with this name has already been started: b2c_acc
> "
>
> :-( the thing is.... this kind of client mode is ok without Tomcat...
>
> please help~~
>
>
>
>
> --
> View this message in context:
> http://apache-ignite-users.70518.x6.nabble.com/How-to-start-and-use-ignite-in-Tomcat-tp4776.html
> Sent from the Apache Ignite Users mailing list archive at Nabble.com.
>
--
Andrey Gura
GridGain Systems, Inc.
www.gridgain.com
How to start and use ignite in Tomcat
Dear all,
i searched a number of topics here. but still don't know how to start and
use ignite (in client mode) from Tomcat you know, I launched the
standalone ignite as server node.
my code in tomcat web app like this:"
this.ignite =
Ignition.start(ClientConfigurationFactory.createConfiguration());
Class.forName("org.apache.ignite.IgniteJdbcDriver");
this.conn = DriverManager
.getConnection("jdbc:ignite:cfg://cache=b2c_accCache@file:///Users/i306576/Documents/ignite/apache-ignite-fabric-1.5.0.final-bin/examples/config/ignite-jdbc.xml");
this.cartCacher = new CartCacher();
this.ic = ignite.cache("b2c_accCache");
"
the console log show some error mes I don't understand..."
Caused by: class org.apache.ignite.IgniteCheckedException: Ignite instance
with this name has already been started: b2c_acc
"
:-( the thing is this kind of client mode is ok without Tomcat...
please help~~
--
View this message in context:
http://apache-ignite-users.70518.x6.nabble.com/How-to-start-and-use-ignite-in-Tomcat-tp4776.html
Sent from the Apache Ignite Users mailing list archive at Nabble.com.
