Spark2Cassandra

Spark Library for Bulk Loading into Cassandra

• 
• 

Requirements

Spark2Cassandra supports Spark 2.2.

It is compatible with the following versions of Cassandra:

• 2.1.5+
• 2.2
• 3.0.x

Downloads

SBT

libraryDependencies +="com.github.leoromanovsky"%%"spark2cassandra"%"3.0.0"

Maven

<dependency>
<groupId>com.github.leoromanovsky</groupId>
<artifactId>spark2cassandra_2.11</artifactId>
<version>x.y.z</version>
</dependency>

Features

• Utilizes Cassandra Java classes with https://github.com/datastax/spark-cassandra-connector to serialize RDDs or DataFrames to SSTables.
• Streams SSTables to Cassandra nodes.

Usage

Bulk Loading into Cassandra

// Import the following to have access to the `bulkLoadToEs()` function for RDDs or DataFrames.importcom.github.jparkie.spark.cassandra.rdd._importcom.github.jparkie.spark.cassandra.sql._valsparkConf=newSparkConf()
valsc=SparkContext.getOrCreate(sparkConf)
valsqlContext=SQLContext.getOrCreate(sc)
// https://datastax-oss.atlassian.net/browse/SPARKC-475implicitvalrwf:RowWriterFactory[Row] =SqlRowWriter.Factoryvalrdd= sc.parallelize(???)
valdf= sqlContext.read.parquet("<PATH>")
// Specify the `keyspaceName` and the `tableName` to write.
rdd.bulkLoadToCass(
keyspaceName ="twitter",
tableName ="tweets_by_date"
)
// Specify the `keyspaceName` and the `tableName` to write.
df.bulkLoadToCass(
keyspaceName ="twitter",
tableName ="tweets_by_author"
)

For more information, refer to:

• SparkCassRDDFunction.scala
• SparkCassDataFrameFunctions.scala

Configurations

As Spark2Cassandra utilizes https://github.com/datastax/spark-cassandra-connector for serializations from Spark and session management, please refer to the following for more configurations: https://github.com/datastax/spark-cassandra-connector/blob/master/doc/reference.md.

SparkCassWriteConf

Refer to for more: SparkCassWriteConf.scala

Property Name	Default	Description
spark.cassandra_bulk.write.partitioner	org.apache.cassandra.dht.Murmur3Partitioner	The 'partitioner' defined in cassandra.yaml.
spark.cassandra_bulk.write.throughput_mb_per_sec	Int.MaxValue	The maximum throughput to throttle.
spark.cassandra_bulk.write.connection_per_host	1	The number of connections per host to utilize when streaming SSTables.

SparkCassServerConf

Refer to for more: SparkCassServerConf.scala

Property Name	Default	Description
spark.cassandra_bulk.server.storage.port	7000	The 'storage_port' defined in cassandra.yaml.
spark.cassandra_bulk.server.sslStorage.port	7001	The 'ssl_storage_port' defined in cassandra.yaml.
spark.cassandra_bulk.server.internode.encryption	"none"	The 'server_encryption_options:internode_encryption' defined in cassandra.yaml.
spark.cassandra_bulk.server.keyStore.path	conf/.keystore	The 'server_encryption_options:keystore' defined in cassandra.yaml.
spark.cassandra_bulk.server.keyStore.password	cassandra	The 'server_encryption_options:keystore_password' defined in cassandra.yaml.
spark.cassandra_bulk.server.trustStore.path	conf/.truststore	The 'server_encryption_options:truststore' defined in cassandra.yaml.
spark.cassandra_bulk.server.trustStore.password	cassandra	The 'server_encryption_options:truststore_password' defined in cassandra.yaml.
spark.cassandra_bulk.server.protocol	TLS	The 'server_encryption_options:protocol' defined in cassandra.yaml.
spark.cassandra_bulk.server.algorithm	SunX509	The 'server_encryption_options:algorithm' defined in cassandra.yaml.
spark.cassandra_bulk.server.store.type	JKS	The 'server_encryption_options:store_type' defined in cassandra.yaml.
spark.cassandra_bulk.server.cipherSuites	TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_256_CBC_SHA	The 'server_encryption_options:cipher_suites' defined in cassandra.yaml.
spark.cassandra_bulk.server.requireClientAuth	false	The 'server_encryption_options:require_client_auth' defined in cassandra.yaml.