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Questions tagged [gridgain]

GridGain is a High Performance In-Memory Platform that enables processing of terabytes of data, in-memory, on 1000s of computers, in less than a second. (Source GridGain.com)

GridGain In-Memory Data Fabric is Java-based middleware for in-memory processing of big data in a distributed environment. It is based on high performance in-memory data platform that integrates world’s fastest MapReduce implementation with In-Memory Data Grid technology delivering easy to use and easy to scale software. Using GridGain you can process terabytes of data, on 1000s of nodes in under a second.

GridGain typically resides between business, analytics or BI applications and long term data storage such as RDBMS (e.g. Oracle, MySQL, etc), ERP, or Hadoop HDFS, and provides in-memory data platform for high performance, low latency data processing and computations.

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What's the alternative to GridAttributesTopologySpi in GridGain 6 (open source version)

We're migrating an application from an older gridgain 4 codebase to gridgain 6. In the old application, we partitioned the nodes based on the grid attribute key "com.mycompany.workgroup" . The new release doesn't have a topologySpi configuration…
Vinay B
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How to implement distributed task executed on GG Node against segment of the IMDB located on it?

I have partitioned (IMDB) I would like to start a compute task on each node which do some calculation on each node IMDB against ALL records on THE node it was executed. Thus each task do a part of the job. it seems that that colocation is not quite…
Val K
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GridGain multicast discover does not find cluster nodes

I'm trying to setup a gridgain cluster in a cloud environment (opensciencedatacloud.org). I've verified that UDP multicast is available and port 47400 is open in this environment, but unfortunately GridGain is unable to find the other nodes when…
pditommaso
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How to deploy a .war to Embedded Jetty of Gridgain

I would like to deploy my custom web application (.war) to the embedded Jetty container of Gridgain. Would you please direct me to documentation or describe steps? Please advise. Thanks.
techbysample.com
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How to execute sql Query With reducer from Dot Net Application?

I made .Net app which create In Memory DataBase (IMDB) on GG nodes I would like to execute "select count(*) from ..." on each node against the context of the IMDB which is on that node and return the result to .Net application. It seems impossible…
Val K
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GridGain join query for two objects

I am using GridGain as local in-memory storage of my data objects (pojos) and I need to query those objects and select the proper one with specific values. Lets consider the following situation: class Person { public Long id; public String…
user3392697
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Gridgain In-Memory Streaming deploiyng

I'm trying to use Gridgain In-Memory Streaming and I can't understand ho w to deploy to cluster. For example, I have cluster from two nodes: 1) first node starts with streamer "TestStreamer" 2) second node has identical streamer "TestStreamer" 3)…
user2773253
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Optimistic mode for gridgain transactions

I am learning how transactions work in gridgain and faced with next issue: optimistic mode doesn't guarantee consistency even with SERIALIZABLE isolation level. Here is sample unit test which shows the problem: @Before public void init() throws…
dimka_ks
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Gridgain visor and Wan replication available only on Enterprise?

Am I right in saying that Gridgain visor and Wan replication can only be used on an Enterprise subscription? http://www.gridgain.org/support/ suggests they are. Thanks
Venkat Srinivasan
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What set GRIDGAIN_HOME variable when embedding GridGain into another application

What value set the environment variable GRIDGAIN_HOME when embedding GridGain into another application? Currently I'm not defining it, the application is working fine but the in the log there's the following warning: WARN …
pditommaso
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GridGain logging configuration issue

I'm starting to play with GridGain (congratulation to open-source it!) I'm trying to embedding it in another app, for this reason I need to use JCL logging instead of the Log4j. My simple piece of code looks like the following (yes, it's groovy…
pditommaso
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Which config file to use for each GG example

Which spring-????-config.xml I should use to star GG nodes so the .net example GridClientApiExample works?
Val K
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GridGain open source datacenter topology specification

GRIDGAIN DATA-CENTER REPLICATION A few specific questions regarding the recently open-sourced Gridgain code. The gridgain.org support link says datacenter replication is not enabled for the open-source version. Is this true or false. More…
user3481150
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Cannot access GridGain 6.0 Maven repository

This question is mainly for the GridGain support team. We are trying to access the GridGain 6.0 repository but our corporate firewall is blocking it because it is using a non-standard port number: GridGain External…
user3470610
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ClassNotFoundException at first sample code of GridGain

I set up GridGain 6.0.2 and started a node in Windows 7. When i want to run the first example at this documentation i get a ClassNotFoundException for the class which has main method. Is there any idea?
user1153321
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