ignite

Ignite.NET从2.0版本开始，引入了 插件系统 ，插件可以仅在于.NET环境中，也可以在于.NET + Java混合环境中，本文会描述如何在后者实现插件。 为什么需要插件？ Ignite.NET构建于Ignite（用Java编写）之上，JVM会在.NET进程中启动，.NET部分与Java部分进行交互，并尽可能重用现有的Ignite功能。 插件系统将此平台交互机制公开给第三方，主要场景之一是在.NET中可以使用Ignite和第三方Java API。 这种API的一个典型事例是 IgniteSemaphore ，该功能在Ignite.NET中尚不可用。 分布式Semaphore API Ignite中的Semaphore类似于 System.Threading.Semaphore （ MSDN ），但是是在整个集群中生效的，限制在所有Ignite节点上执行指定代码段的线程数。 代码大致如下： IIgnite ignite = Ignition.GetIgnite(); ISemaphore semaphore = ignite.GetOrCreateSemaphore(name: "foo", count: 3); semaphore.WaitOne(); // Enter the semaphore (may block) // Do work semaphore

I am writing a code to cache RDBMS data using spark SQLContext JDBC connection. Once a Dataframe is created I want to cache that reusltset using apache ignite thereby making other applications to make use of the resultset. Here is the code snippet. object test { def main(args:Array[String]) { val configuration = new Configuration() val config="src/main/scala/config.xml" val sparkConf = new SparkConf().setAppName("test").setMaster("local[*]") val sc=new SparkContext(sparkConf) val sqlContext = new org.apache.spark.sql.SQLContext(sc) val sql_dump1=sqlContext.read.format("jdbc").option("url",

I am trying to run apache ignite cluster using Google Kubernetes Engine. After following the tutorial here are some yaml files. First I create a service - ignite-service.yaml apiVersion: v1 kind: Service metadata: # Name of Ignite Service used by Kubernetes IP finder. # The name must be equal to TcpDiscoveryKubernetesIpFinder.serviceName. name: ignite namespace: default spec: clusterIP: None # custom value. ports: - port: 9042 # custom value. selector: # Must be equal to one of the labels set in Ignite pods' # deployement configuration. app: ignite kubectl create -f ignite-service.yaml Second,

I am creating a cache of BinaryObject from spark a dataframe and then I want to perform SQL on that ignite cache. Here is my code where bank is the dataframe which contains three fields (id,name and age): val ic = new IgniteContext(sc, () => new IgniteConfiguration()) val cacheConfig = new CacheConfiguration[BinaryObject, BinaryObject]() cacheConfig.setName("test123") cacheConfig.setStoreKeepBinary(true) cacheConfig.setIndexedTypes(classOf[BinaryObject], classOf[BinaryObject]) val qe = new QueryEntity() qe.setKeyType(TestKey) qe.setValueType(TestValue) val fields = new java.util.LinkedHashMap

I have system with Hibernate, Spring, PostgreSQL, MongoDB, Neo4j and ElasticSearch working with EhCache for Hibernate L2 and Spring Cache, it works well. I'm testing Ignite but the system became extremely slow when I put Ignite for Hibernate L2 (with Spring Cache works fast), I put JProfiler to see what is really slow and I just saw the follow methods extremely slow: org.postgresql.core.VisibleBufferedInputStream.read(byte[ ], int, int) org.postgresql.jdbc2.AbstractJdbc2Statement.parseSql javax.persistence.EntityManager.find This doesn't make much sense to me. I'm using Ignite 1.5.1.final

I am having trouble using Ignite on JDK 9. I have the following minimal testcase: package no.ovstetun.ignite; import org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi; import org.junit.Test; public class FailingIgniteTest { @Test public void failingIgnite() { TcpDiscoverySpi discoverySpi = new TcpDiscoverySpi(); } } This code sample fails with the following stacktrace: java.lang.ExceptionInInitializerError at org.apache.ignite.internal.util.IgniteUtils.<clinit>(IgniteUtils.java:769) at org.apache.ignite.spi.IgniteSpiAdapter.<init>(IgniteSpiAdapter.java:119) at org.apache.ignite.spi.discovery

I'm prototyping something with Spring-Boot 1.2.7.RELEASE and Apache Ignite 1.4.0 and noticed something a little odd, maybe it's a just a logging configuration. It looks like Apache Ignite is trying to start twice with Spring? If I comment out the SpringApplication.run line then it looks like it only starts once. Maybe I'm not using Spring with Apache Ignite correctly? pom.xml <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org