Failed to find data nodes for cache in Apache Ignite

Question

I have a Spark application (version 2.1) writing data to an Ignite server cache (version 2.2). This is the code I use to create the cache from an IgniteContext in the Spark job:

object Spark_Streaming_Processing {

 case class Custom_Class(
                  @(QuerySqlField @field)(index = true) a: String,
                  @(QuerySqlField @field)(index = true) b: String,
                  @(QuerySqlField @field)(index = true) c: String,
                  @(QuerySqlField @field)(index = true) d: String,
                  @(QuerySqlField @field)(index = true) e: String,
                  @(QuerySqlField @field)(index = true) f: String,
                  @(QuerySqlField @field)(index = true) g: String,
                  @(QuerySqlField @field)(index = true) h: String

                )

//START IGNITE CONTEXT

val addresses=new util.ArrayList[String]()
addresses.add("127.0.0.1:48500..48520")

val igniteContext:IgniteContext=new IgniteContext(sqlContext.sparkContext,()=>
new IgniteConfiguration().setDiscoverySpi(new TcpDiscoverySpi().setIpFinder(new TcpDiscoveryVmIpFinder().setAddresses(addresses))
  ).setCacheConfiguration(new CacheConfiguration[String,Custom_Class]()
  .setName("Spark_Ignite").setBackups(1).setIndexedTypes(classOf[String],classOf[Custom_Class]))
,true)


println(igniteContext.ignite().cacheNames())

val ignite_cache_rdd:IgniteRDD[String,Custom_Class] =igniteContext.fromCache[String,Custom_Class]("Spark_Ignite")

val processed_Pair:RDD[(String,Custom_Class)]=(...)// rdd with data, which as you can see has the correct datatypes as parameters

ignite_cache_rdd.savePairs(processed_PairRDD)

}
  }

Everything was working fine, but yesterday I decided to destroy the Spark_Ignite cache and restart the Ignite server. However, running the Spark application again, I am now getting the following error

javax.cache.CacheException: Failed to find data nodes for cache: Spark_Ignite
    at org.apache.ignite.internal.processors.query.h2.twostep.GridReduceQueryExecutor.stableDataNodes(GridReduceQueryExecutor.java:447)
    at org.apache.ignite.internal.processors.query.h2.twostep.GridReduceQueryExecutor.query(GridReduceQueryExecutor.java:591)
    at org.apache.ignite.internal.processors.query.h2.IgniteH2Indexing$8.iterator(IgniteH2Indexing.java:1160)

If I go to the Ignite visor I can see that the cache was created on the Ignite server side, and I can see that the Ignite server detects the Spark application's Ignite client:

 [12:17:01] Topology snapshot [ver=4, servers=1, clients=1, CPUs=12, heap=1.9GB]

However, the Ignite client in the Spark application doesn't seem to detect the server node when it starts, even though the cache was created:

18/04/13 12:17:01 INFO GridDiscoveryManager: Topology snapshot [ver=4, servers=0, clients=1, CPUs=12, heap=0.89GB]
18/04/13 12:17:07 ERROR Executor: Exception in task 0.0 in stage 2.0 (TID 2)
javax.cache.CacheException: Failed to find data nodes for cache: Spark_Ignite

I should add that the Ignite client won't start if the Ignite server is not up, it looks for it in the addresses given and just hangs. When I connect the server, the cache is created and only then do I get this error.

What might the issue be here? And how is it that it was working before?

Thank you.

UPDATE

Here is the xml config file that I use for my single Ignite server:

<?xml version="1.0" encoding="UTF-8"?>

 <beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:util="http://www.springframework.org/schema/util"
   xsi:schemaLocation="
    http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
    http://www.springframework.org/schema/util
    http://www.springframework.org/schema/util/spring-util-2.0.xsd">

<bean id="ignite_cluster.cfg" 
 class="org.apache.ignite.configuration.IgniteConfiguration">
    <property name="igniteInstanceName" value="ignite_node1" />
    <!-- Explicitly configure TCP discovery SPI to provide list of initial nodes. -->
     <property name="discoverySpi">
            <bean class="org.apache.ignite.spi.discovery.tcp.TcpDiscoverySpi">
                    <!-- Initial local port to listen to. -->
                    <property name="localPort" value="48510"/>
                    <!-- Changing local port range. This is an optional action. -->
                    <property name="localPortRange" value="20"/>
                    <!-- Setting up IP finder for this cluster -->
                    <property name="ipFinder">
                            <bean class="org.apache.ignite.spi.discovery.tcp.ipfinder.vm.TcpDiscoveryVmIpFinder">
                                    <property name="addresses">
                                            <list>
                                                    <!-- Addresses and port range of the nodes from the first cluster.
          127.0.0.1 can be replaced with actual IP addresses or host names.
          Port range is optional. -->

           <value>127.0.0.1:48500..48520</value>
                                            </list>
                                    </property>
                            </bean>
                    </property>
            </bean>
    </property>
    <property name="communicationSpi">
            <bean class="org.apache.ignite.spi.communication.tcp.TcpCommunicationSpi">
                    <property name="localPort" value="48100"/>
            </bean>
    </property>
</bean>
 <bean class="org.apache.ignite.configuration.FileSystemConfiguration">
    <property name="secondaryFileSystem">
 <bean class="org.apache.ignite.hadoop.fs.IgniteHadoopIgfsSecondaryFileSystem">
  <property name="fileSystemFactory">
    <bean class="org.apache.ignite.hadoop.fs.CachingHadoopFileSystemFactory">
      <property name="uri" value="hdfs://localhost:9000/"/>
      </bean>
     </property>
    </bean>
  </property>
</bean>
<bean class="org.apache.ignite.hadoop.fs.CachingHadoopFileSystemFactory">
 <property name="uri" value="hdfs://localhost:9000/"/>
 <property name="configPaths">
    <list>
      <value>/etc/hadoop-2.9.0/etc/hadoop/core-site.xml</value>
    </list>
  </property>
 </bean>

 </beans>

Answer 1

I encountered a similar problem with the exact same error message:

javax.cache.CacheException: Failed to find data nodes for cache: <cache name>
    at org.apache.ignite.internal.processors.query.h2.twostep.GridReduceQueryExecutor.stableDataNodes(GridReduceQueryExecutor.java:447)
    at org.apache.ignite.internal.processors.query.h2.twostep.GridReduceQueryExecutor.query(GridReduceQueryExecutor.java:591)
    at org.apache.ignite.internal.processors.query.h2.IgniteH2Indexing$8.iterator(IgniteH2Indexing.java:1160)

Did the following:

1. Checked the ignite topology by: ./control.sh --baseline
2. If there is any baseline node in offline state, either start that baseline node or you can remove it by ./control.sh --baseline remove <ConsistentID>

3. Restart your client application