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Kafka Sink Connector Configuration¶
Topic: Kafka Sink Connector configuration properties
Learn: How to configure the ScyllaDB Kafka Sink Connector
Audience: ScyllaDB application developers
Synopsis¶
This document contains Kafka Sink Connector configuration properties and descriptions.
Usage¶
To use this connector, specify the name of the connector class in the connector.class configuration property.
connector.class=io.connect.scylladb.ScyllaDbSinkConnector
Connection¶
scylladb.contact.points¶
Specifies which ScyllaDB hosts to connect to. ScyllaDB nodes use this list of hosts to find each other and learn the topology of the ring. You must change this if you are running multiple nodes. It’s essential to put at least two hosts in case of bigger clusters for high availability purposes. If you are using a docker image, connect to the host it uses.
Type: List
Importance: High
Default Value: [localhost]
scylladb.port¶
Specifies the port that the ScyllaDB hosts are listening on.
For example, when using a docker image, connect to the port it uses (use docker ps).
Type: Int
Importance: Medium
Default Value: 9042
Valid Values: ValidPort{start=1, end=65535}
scylladb.loadbalancing.localdc¶
Specifies the local Data Center name (case-sensitive) that is local to the machine on which the connector is running.
Type: string
Default: “”
Importance: high
scylladb.security.enabled¶
Enables security while loading the sink connector and connecting to ScyllaDB.
Type: Boolean
Importance: High
Default Value: False
scylladb.username¶
Specifies the username to use to connect to ScyllaDB. Set scylladb.security.enable = true when using this parameter.
Type: String
Importance: High
Default Value: cassandra
scylladb.password¶
Specifies the password to use to connect to ScyllaDB. Set scylladb.security.enable = true when using this parameter.
Type: Password
Importance: High
Default Value: cassandra
scylladb.compression¶
Specifies the compression algorithm to use when connecting to ScyllaDB.
Type: string
Default: NONE
Valid Values: [NONE, SNAPPY, LZ4]
Importance: low
scylladb.ssl.enabled¶
Specifies if SSL should be enabled when connecting to ScyllaDB.
Type: boolean
Default: false
Importance: high
SSL¶
scylladb.ssl.truststore.path¶
Specifies the path to the Java Truststore.
Type: string
Default: “”
Importance: medium
scylladb.ssl.truststore.password¶
Specifies the password to use to access the Java Truststore.
Type: password
Default: [hidden]
Importance: medium
scylladb.ssl.provider¶
Specifies the SSL Provider to use when connecting to ScyllaDB.
Type: string
Default: JDK
Valid Values: [JDK, OPENSSL, OPENSSL_REFCNT]
Importance: low
Keyspace¶
scylladb.keyspace¶
Specifies the keyspace to write to. This keyspace is like a database in the ScyllaDB cluster.
Type: String
Importance: High
scylladb.keyspace.create.enabled¶
Determines if the keyspace should be created if it does not exist.
Note
An error will result if a new keyspace (which already exists) has to be created, and this parameter is set to false.
Type: Boolean
Importance: High
Default Value: true
scylladb.keyspace.replication.factor¶
Specifies the replication factor to use if a keyspace is created by the connector. The Replication Factor (RF) is equivalent to the number of nodes where data (rows and partitions) are replicated. Data is replicated to multiple (RF=N) nodes
Type: int
Default: 3
Valid Values: [1,…]
Importance: high
Table¶
scylladb.table.manage.enabled¶
Determines if the connector should manage the table.
Type: Boolean
Importance: High
Default Value: true
scylladb.table.create.compression.algorithm¶
Specifies the compression algorithm to use when the table is created.
Type: string
Default: NONE
Valid Values: [NONE, SNAPPY, LZ4, DEFLATE]
Importance: medium
scylladb.offset.storage.table¶
The table within the ScyllaDB keyspace to store the offsets that have been read from Apache Kafka. This is used once to enable delivery to ScyllaDB.
Type: String
Importance: Low
Default: kafka_connect_offsets
Write¶
scylladb.consistency.level¶
The requested consistency level to use when writing to ScyllaDB. The Consistency Level (CL) determines how many replicas in a cluster that must acknowledge read or write operations before it is considered successful.
Type: String
Importance: High
Default Value: LOCAL_QUORUM
Valid Values: ANY, ONE, TWO, THREE, QUORUM, ALL, LOCAL_QUORUM, EACH_QUORUM, SERIAL, LOCAL_SERIAL, LOCAL_ONE
scylladb.deletes.enabled¶
Determines if the connector should process deletes. The Kafka records with a Kafka record value as null will result in the deletion of the ScyllaDB record with the primary key present in the Kafka record key.
Type: boolean
Default: true
Importance: high
scylladb.execute.timeout.ms¶
The timeout for executing a ScyllaDB statement.
Type: Long
Importance: Low
Default Value: 30000
scylladb.ttl¶
The retention period for the data in ScyllaDB. After this interval elapses, ScyllaDB will remove these records. If this configuration is not provided, the Sink Connector will perform insert operations in ScyllaDB without the TTL setting.
Type: Int
Importance: Medium
Default Value: null
scylladb.offset.storage.table.enable¶
If true, Kafka consumer offsets will be stored in the ScyllaDB table. If false, the connector will skip writing offset information into ScyllaDB (this might imply duplicate writes into ScyllaDB when a task restarts).
Type: Boolean
Importance: Medium
Default Value: True
scylladb.max.batch.size.kb¶
Maximum size(in kilobytes) of a single batch consisting of ScyllaDB operations.
Should be equal to batch_size_warn_threshold_in_kb and 1/10th of the batch_size_fail_threshold_in_kb configured in scylla.yaml.
The default value is set to 5kb, any change in this configuration should be accompanied by a change in scylla.yaml.
Type: int
Default: 5
Valid Values: [1,…]
Importance: high
Confluent Platform configurations¶
tasks.max¶
Specifies the maximum number of tasks to use for the connector that helps in parallelism.
Type:int
Importance: high
topics¶
Specifies the name of the topics to consume data from and write to ScyllaDB.
Type: list
Importance: high
confluent.topic.bootstrap.servers¶
A list of host/port pairs to use for establishing the initial connection to the Kafka cluster used for licensing.
All servers in the cluster will be discovered from the initial connection.
This list should be in the form host1:port1,host2:port2,….
Since these servers are just used for the initial connection to discover the full cluster membership (which may change dynamically), this list need not contain the full set of servers (you may want more than one, though, in case a server is down).
Type: list
Importance: high