Kudu

Kudu source connector

Support Kudu Version

• 1.11.1/1.12.0/1.13.0/1.14.0/1.15.0

Support Those Engines

Spark
Flink
SeaTunnel Zeta

Key features

• batch
• exactly-once
• column projection
• parallelism
• support user-defined split

Description

Used to read data from Kudu.

The tested kudu version is 1.11.1.

Data Type Mapping

kudu Data Type	SeaTunnel Data Type
BOOL	BOOLEAN
INT8 INT16 INT32	INT
INT64	BIGINT
DECIMAL	DECIMAL
FLOAT	FLOAT
DOUBLE	DOUBLE
STRING	STRING
UNIXTIME_MICROS	TIMESTAMP
BINARY	BYTES

Source Options

Name	Type	Required	Default	Description
kudu_masters	String	Yes	-	Kudu master address. Separated by ',',such as '192.168.88.110:7051'.
table_name	String	Yes	-	The name of kudu table.
client_worker_count	Int	No	2 * Runtime.getRuntime().availableProcessors()	Kudu worker count. Default value is twice the current number of cpu cores.
client_default_operation_timeout_ms	Long	No	30000	Kudu normal operation time out.
client_default_admin_operation_timeout_ms	Long	No	30000	Kudu admin operation time out.
enable_kerberos	Bool	No	false	Kerberos principal enable.
kerberos_principal	String	No	-	Kerberos principal. Note that all zeta nodes require have this file.
kerberos_keytab	String	No	-	Kerberos keytab. Note that all zeta nodes require have this file.
kerberos_krb5conf	String	No	-	Kerberos krb5 conf. Note that all zeta nodes require have this file.
scan_token_query_timeout	Long	No	30000	The timeout for connecting scan token. If not set, it will be the same as operationTimeout.
scan_token_batch_size_bytes	Int	No	1024 * 1024	Kudu scan bytes. The maximum number of bytes read at a time, the default is 1MB.
filter	Int	No	1024 * 1024	Kudu scan filter expressions,Not supported yet.
schema	Map	No	1024 * 1024	SeaTunnel Schema.
table_list	Array	No	-	The list of tables to be read. you can use this configuration instead of table_path example: table_list = [{ table_name = "kudu_source_table_1"},{ table_name = "kudu_source_table_2"}]
common-options		No	-	Source plugin common parameters, please refer to Source Common Options for details.

Task Example

Simple:

The following example is for a Kudu table named "kudu_source_table", The goal is to print the data from this table on the console and write kudu table "kudu_sink_table"

# Defining the runtime environment
env {
  parallelism = 2
  job.mode = "BATCH"
}

source {
  # This is a example source plugin **only for test and demonstrate the feature source plugin**
  kudu {
    kudu_masters = "kudu-master:7051"
    table_name = "kudu_source_table"
    plugin_output = "kudu"
    enable_kerberos = true
    kerberos_principal = "xx@xx.COM"
    kerberos_keytab = "xx.keytab"
  }
}

transform {
}

sink {
  console {
    plugin_input = "kudu"
  }

  kudu {
    plugin_input = "kudu"
    kudu_masters = "kudu-master:7051"
    table_name = "kudu_sink_table"
    enable_kerberos = true
    kerberos_principal = "xx@xx.COM"
    kerberos_keytab = "xx.keytab"
  }
}

Multiple Table

env {
  # You can set engine configuration here
  parallelism = 1
  job.mode = "STREAMING"
  checkpoint.interval = 5000
}

source {
  # This is a example source plugin **only for test and demonstrate the feature source plugin**
  kudu{
   kudu_masters = "kudu-master:7051"
   table_list = [
   {
    table_name = "kudu_source_table_1"
   },{
    table_name = "kudu_source_table_2"
   }
   ]
   plugin_output = "kudu"
}
}

transform {
}

sink {
  Assert {
    rules {
      table-names = ["kudu_source_table_1", "kudu_source_table_2"]
    }
  }
}

Changelog

2.2.0-beta 2022-09-26

• Add Kudu Source Connector

Next Version

• Change plugin name from KuduSource to Kudu 3432