Apache spark saveToCassandra与Cassandra Lucene插件一起工作?
我在Lucene plugin for Cassandra页面上实现了这个示例,当我尝试使用saveToCassandra保存数据时,我得到了异常NoSuchElementException。 如果我使用CassandraConnector.withSessionDo,我可以将元素添加到Cassandra中,并且不会引发异常 各表:Apache spark saveToCassandra与Cassandra Lucene插件一起工作?,apache-spark,cassandra,lucene,cassandra-lucene-index,Apache Spark,Cassandra,Lucene,Cassandra Lucene Index,我在Lucene plugin for Cassandra页面上实现了这个示例,当我尝试使用saveToCassandra保存数据时,我得到了异常NoSuchElementException。 如果我使用CassandraConnector.withSessionDo,我可以将元素添加到Cassandra中,并且不会引发异常 各表: CREATE KEYSPACE demo WITH REPLICATION = {'class' : 'SimpleStrategy', 'replication_
CREATE KEYSPACE demo
WITH REPLICATION = {'class' : 'SimpleStrategy', 'replication_factor': 1};
USE demo;
CREATE TABLE tweets (
id INT PRIMARY KEY,
user TEXT,
body TEXT,
time TIMESTAMP,
latitude FLOAT,
longitude FLOAT
);
CREATE CUSTOM INDEX tweets_index ON tweets ()
USING 'com.stratio.cassandra.lucene.Index'
WITH OPTIONS = {
'refresh_seconds' : '1',
'schema' : '{
fields : {
id : {type : "integer"},
user : {type : "string"},
body : {type : "text", analyzer : "english"},
time : {type : "date", pattern : "yyyy/MM/dd", sorted : true},
place : {type : "geo_point", latitude:"latitude", longitude:"longitude"}
}
}'
};
守则:
import org.apache.spark.{SparkConf, SparkContext, Logging}
import com.datastax.spark.connector.cql.CassandraConnector
import com.datastax.spark.connector._
object App extends Logging{
def main(args: Array[String]) {
// Get the cassandra IP and create the spark context
val cassandraIP = System.getenv("CASSANDRA_IP");
val sparkConf = new SparkConf(true)
.set("spark.cassandra.connection.host", cassandraIP)
.set("spark.cleaner.ttl", "3600")
.setAppName("Simple Spark Cassandra Example")
val sc = new SparkContext(sparkConf)
// Works
CassandraConnector(sparkConf).withSessionDo { session =>
session.execute("INSERT INTO demo.tweets(id, user, body, time, latitude, longitude) VALUES (19, 'Name', 'Body', '2016-03-19 09:00:00-0300', 39, 39)")
}
// Does not work
val demo = sc.parallelize(Seq((9, "Name", "Body", "2016-03-29 19:00:00-0300", 29, 29)))
// Raises the exception
demo.saveToCassandra("demo", "tweets", SomeColumns("id", "user", "body", "time", "latitude", "longitude"))
}
}
例外情况:
16/03/28 14:15:41 INFO CassandraConnector: Connected to Cassandra cluster: Test Cluster
Exception in thread "main" java.util.NoSuchElementException: Column not found in demo.tweets
at com.datastax.spark.connector.cql.StructDef$$anonfun$columnByName$2.apply(Schema.scala:60)
at com.datastax.spark.connector.cql.StructDef$$anonfun$columnByName$2.apply(Schema.scala:60)
at scala.collection.Map$WithDefault.default(Map.scala:52)
at scala.collection.MapLike$class.apply(MapLike.scala:141)
at scala.collection.AbstractMap.apply(Map.scala:58)
at com.datastax.spark.connector.cql.TableDef$$anonfun$9.apply(Schema.scala:153)
at com.datastax.spark.connector.cql.TableDef$$anonfun$9.apply(Schema.scala:152)
at scala.collection.TraversableLike$WithFilter$$anonfun$map$2.apply(TraversableLike.scala:722)
at scala.collection.immutable.Map$Map1.foreach(Map.scala:109)
at scala.collection.TraversableLike$WithFilter.map(TraversableLike.scala:721)
at com.datastax.spark.connector.cql.TableDef.<init>(Schema.scala:152)
at com.datastax.spark.connector.cql.Schema$$anonfun$com$datastax$spark$connector$cql$Schema$$fetchTables$1$2.apply(Schema.scala:283)
at com.datastax.spark.connector.cql.Schema$$anonfun$com$datastax$spark$connector$cql$Schema$$fetchTables$1$2.apply(Schema.scala:271)
at scala.collection.TraversableLike$WithFilter$$anonfun$map$2.apply(TraversableLike.scala:722)
at scala.collection.immutable.Set$Set4.foreach(Set.scala:137)
at scala.collection.TraversableLike$WithFilter.map(TraversableLike.scala:721)
at com.datastax.spark.connector.cql.Schema$.com$datastax$spark$connector$cql$Schema$$fetchTables$1(Schema.scala:271)
at com.datastax.spark.connector.cql.Schema$$anonfun$com$datastax$spark$connector$cql$Schema$$fetchKeyspaces$1$2.apply(Schema.scala:295)
at com.datastax.spark.connector.cql.Schema$$anonfun$com$datastax$spark$connector$cql$Schema$$fetchKeyspaces$1$2.apply(Schema.scala:294)
at scala.collection.TraversableLike$WithFilter$$anonfun$map$2.apply(TraversableLike.scala:722)
at scala.collection.immutable.HashSet$HashSet1.foreach(HashSet.scala:153)
at scala.collection.immutable.HashSet$HashTrieSet.foreach(HashSet.scala:306)
at scala.collection.TraversableLike$WithFilter.map(TraversableLike.scala:721)
at com.datastax.spark.connector.cql.Schema$.com$datastax$spark$connector$cql$Schema$$fetchKeyspaces$1(Schema.scala:294)
at com.datastax.spark.connector.cql.Schema$$anonfun$fromCassandra$1.apply(Schema.scala:307)
at com.datastax.spark.connector.cql.Schema$$anonfun$fromCassandra$1.apply(Schema.scala:304)
at com.datastax.spark.connector.cql.CassandraConnector$$anonfun$withClusterDo$1.apply(CassandraConnector.scala:121)
at com.datastax.spark.connector.cql.CassandraConnector$$anonfun$withClusterDo$1.apply(CassandraConnector.scala:120)
at com.datastax.spark.connector.cql.CassandraConnector$$anonfun$withSessionDo$1.apply(CassandraConnector.scala:110)
at com.datastax.spark.connector.cql.CassandraConnector$$anonfun$withSessionDo$1.apply(CassandraConnector.scala:109)
at com.datastax.spark.connector.cql.CassandraConnector.closeResourceAfterUse(CassandraConnector.scala:139)
at com.datastax.spark.connector.cql.CassandraConnector.withSessionDo(CassandraConnector.scala:109)
at com.datastax.spark.connector.cql.CassandraConnector.withClusterDo(CassandraConnector.scala:120)
at com.datastax.spark.connector.cql.Schema$.fromCassandra(Schema.scala:304)
at com.datastax.spark.connector.writer.TableWriter$.apply(TableWriter.scala:275)
at com.datastax.spark.connector.RDDFunctions.saveToCassandra(RDDFunctions.scala:36)
at com.webradar.spci.spark.cassandra.App$.main(App.scala:27)
at com.webradar.spci.spark.cassandra.App.main(App.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:731) 16/03/28 14:15:41 INFO CassandraConnector: Connected to Cassandra cluster: Test Cluster
Exception in thread "main" java.util.NoSuchElementException: Column not found in demo.tweets
at com.datastax.spark.connector.cql.StructDef$$anonfun$columnByName$2.apply(Schema.scala:60)
at com.datastax.spark.connector.cql.StructDef$$anonfun$columnByName$2.apply(Schema.scala:60)
at scala.collection.Map$WithDefault.default(Map.scala:52)
at scala.collection.MapLike$class.apply(MapLike.scala:141)
at scala.collection.AbstractMap.apply(Map.scala:58)
at com.datastax.spark.connector.cql.TableDef$$anonfun$9.apply(Schema.scala:153)
at com.datastax.spark.connector.cql.TableDef$$anonfun$9.apply(Schema.scala:152)
at scala.collection.TraversableLike$WithFilter$$anonfun$map$2.apply(TraversableLike.scala:722)
at scala.collection.immutable.Map$Map1.foreach(Map.scala:109)
at scala.collection.TraversableLike$WithFilter.map(TraversableLike.scala:721)
at com.datastax.spark.connector.cql.TableDef.<init>(Schema.scala:152)
at com.datastax.spark.connector.cql.Schema$$anonfun$com$datastax$spark$connector$cql$Schema$$fetchTables$1$2.apply(Schema.scala:283)
at com.datastax.spark.connector.cql.Schema$$anonfun$com$datastax$spark$connector$cql$Schema$$fetchTables$1$2.apply(Schema.scala:271)
at scala.collection.TraversableLike$WithFilter$$anonfun$map$2.apply(TraversableLike.scala:722)
at scala.collection.immutable.Set$Set4.foreach(Set.scala:137)
at scala.collection.TraversableLike$WithFilter.map(TraversableLike.scala:721)
at com.datastax.spark.connector.cql.Schema$.com$datastax$spark$connector$cql$Schema$$fetchTables$1(Schema.scala:271)
at com.datastax.spark.connector.cql.Schema$$anonfun$com$datastax$spark$connector$cql$Schema$$fetchKeyspaces$1$2.apply(Schema.scala:295)
at com.datastax.spark.connector.cql.Schema$$anonfun$com$datastax$spark$connector$cql$Schema$$fetchKeyspaces$1$2.apply(Schema.scala:294)
at scala.collection.TraversableLike$WithFilter$$anonfun$map$2.apply(TraversableLike.scala:722)
at scala.collection.immutable.HashSet$HashSet1.foreach(HashSet.scala:153)
at scala.collection.immutable.HashSet$HashTrieSet.foreach(HashSet.scala:306)
at scala.collection.TraversableLike$WithFilter.map(TraversableLike.scala:721)
at com.datastax.spark.connector.cql.Schema$.com$datastax$spark$connector$cql$Schema$$fetchKeyspaces$1(Schema.scala:294)
at com.datastax.spark.connector.cql.Schema$$anonfun$fromCassandra$1.apply(Schema.scala:307)
at com.datastax.spark.connector.cql.Schema$$anonfun$fromCassandra$1.apply(Schema.scala:304)
at com.datastax.spark.connector.cql.CassandraConnector$$anonfun$withClusterDo$1.apply(CassandraConnector.scala:121)
at com.datastax.spark.connector.cql.CassandraConnector$$anonfun$withClusterDo$1.apply(CassandraConnector.scala:120)
at com.datastax.spark.connector.cql.CassandraConnector$$anonfun$withSessionDo$1.apply(CassandraConnector.scala:110)
at com.datastax.spark.connector.cql.CassandraConnector$$anonfun$withSessionDo$1.apply(CassandraConnector.scala:109)
at com.datastax.spark.connector.cql.CassandraConnector.closeResourceAfterUse(CassandraConnector.scala:139)
at com.datastax.spark.connector.cql.CassandraConnector.withSessionDo(CassandraConnector.scala:109)
at com.datastax.spark.connector.cql.CassandraConnector.withClusterDo(CassandraConnector.scala:120)
at com.datastax.spark.connector.cql.Schema$.fromCassandra(Schema.scala:304)
at com.datastax.spark.connector.writer.TableWriter$.apply(TableWriter.scala:275)
at com.datastax.spark.connector.RDDFunctions.saveToCassandra(RDDFunctions.scala:36)
at com.webradar.spci.spark.cassandra.App$.main(App.scala:27)
at com.webradar.spci.spark.cassandra.App.main(App.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:731)
at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:181)
at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:206)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:121)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:181)
at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:206)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:121)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
编辑:
版本
Spark 1.6.0
卡桑德拉3.0.3
Lucene插件3.0.3.1
为了创建Jar,我使用maven汇编插件获得了一个胖Jar。
如果我删除了自定义索引,我就可以使用saveToCassandra了,问题似乎是由Cassandra Spark驱动程序中的问题引起的,而不是插件中的问题 因为Cassandra 3.x每行索引不再需要在伪列上创建。因此,在Cassandra 3.x中,基于%s%s列语法的创建自定义索引%s将替换为基于%s行语法的新创建自定义索引%s。然而,DataStax Spark驱动程序似乎还不支持这个新特性 调用com.datastax.spark.connector.RDDFunctions.saveToCassandra时,它会尝试加载与表列相关的表架构和索引架构。由于这个新的索引语法不再具有假列,因此由于列名称为空,它会导致NosTouchElementException 但是,如果使用前面的伪列语法执行相同的示例,则saveToCassandra工作良好:
CREATE KEYSPACE demo
WITH REPLICATION = {'class' : 'SimpleStrategy', 'replication_factor': 1};
USE demo;
CREATE TABLE tweets (
id INT PRIMARY KEY,
user TEXT,
body TEXT,
time TIMESTAMP,
latitude FLOAT,
longitude FLOAT,
lucene TEXT
);
CREATE CUSTOM INDEX tweets_index ON tweets (lucene)
USING 'com.stratio.cassandra.lucene.Index'
WITH OPTIONS = {
'refresh_seconds' : '1',
'schema' : '{
fields : {
id : {type : "integer"},
user : {type : "string"},
body : {type : "text", analyzer : "english"},
time : {type : "date", pattern : "yyyy/MM/dd", sorted : true},
place : {type : "geo_point", latitude:"latitude", longitude:"longitude"}
}
}'
};
问题似乎是由Cassandra Spark驱动程序中的问题引起的,而不是插件中的问题 因为Cassandra 3.x每行索引不再需要在伪列上创建。因此,在Cassandra 3.x中,基于%s%s列语法的创建自定义索引%s将替换为基于%s行语法的新创建自定义索引%s。然而,DataStax Spark驱动程序似乎还不支持这个新特性 调用com.datastax.spark.connector.RDDFunctions.saveToCassandra时,它会尝试加载与表列相关的表架构和索引架构。由于这个新的索引语法不再具有假列,因此由于列名称为空,它会导致NosTouchElementException 但是,如果使用前面的伪列语法执行相同的示例,则saveToCassandra工作良好:
CREATE KEYSPACE demo
WITH REPLICATION = {'class' : 'SimpleStrategy', 'replication_factor': 1};
USE demo;
CREATE TABLE tweets (
id INT PRIMARY KEY,
user TEXT,
body TEXT,
time TIMESTAMP,
latitude FLOAT,
longitude FLOAT,
lucene TEXT
);
CREATE CUSTOM INDEX tweets_index ON tweets (lucene)
USING 'com.stratio.cassandra.lucene.Index'
WITH OPTIONS = {
'refresh_seconds' : '1',
'schema' : '{
fields : {
id : {type : "integer"},
user : {type : "string"},
body : {type : "text", analyzer : "english"},
time : {type : "date", pattern : "yyyy/MM/dd", sorted : true},
place : {type : "geo_point", latitude:"latitude", longitude:"longitude"}
}
}'
};
几个问题。。。您使用的是哪种版本的spark,cassandra连接器?你如何提交你的罐子?它是一个罐子还是一个胖罐子?我添加了几个问题。。。您使用的是哪种版本的spark,cassandra连接器?你如何提交你的罐子?是罐子还是肥罐子?我添加了版本