dse advrep channel truncate

Truncates a channel to prevent replicating all messages that are currently in the replication log.

A replication channel is a defined channel of change data between source clusters and destination clusters.

Restriction: Command is supported only on nodes configured for DSE Advanced Replication.

Synopsis

dse advrep channel truncate
    --source-keyspace keyspace_name
    --source-table source_table_name
    --destinations destination [ , destination ]
    --data-center-ids data_center_id [ , data_center_id ]

Table 1. Legend
Syntax conventions	Description
UPPERCASE	Literal keyword.
Lowercase	Not literal.
`Italics`	Variable value. Replace with a valid option or user-defined value.
`[ ]`	Optional. Square brackets ( `[ ]` ) surround optional command arguments. Do not type the square brackets.
`( )`	Group. Parentheses ( `( )` ) identify a group to choose from. Do not type the parentheses.
`\|`	Or. A vertical bar ( `\|` ) separates alternative elements. Type any one of the elements. Do not type the vertical bar.
`...`	Repeatable. An ellipsis ( `...` ) indicates that you can repeat the syntax element as often as required.
`'Literal string'`	Single quotation ( `'` ) marks must surround literal strings in CQL statements. Use single quotation marks to preserve upper case.
`{ key:value }`	Map collection. Braces ( `{ }` ) enclose map collections or key value pairs. A colon separates the key and the value.
`<datatype1,datatype2>`	Set, list, map, or tuple. Angle brackets ( `< >` ) enclose data types in a set, list, map, or tuple. Separate the data types with a comma.
`cql_statement;`	End CQL statement. A semicolon ( `;` ) terminates all CQL statements.
`[ -- ]`	Separate the command line options from the command arguments with two hyphens ( `--` ). This syntax is useful when arguments might be mistaken for command line options.
`' <schema> ... </schema> '`	Search CQL only: Single quotation marks ( `'` ) surround an entire XML schema declaration.
`@xml_entity='xml_entity_type'`	Search CQL only: Identify the entity and literal value to overwrite the XML element in the schema and solrconfig files.

--source-keyspace keyspace_name: The source cluster keyspace to replicate.
--source-table source_table_name: The source table to replicate.
--destinations destination [ , destination ]: The destinations where the replication are sent.
--data-center-ids data_center_id [ , data_center_id ]: The datacenters for this channel, which must exist.

Examples

To truncate a replication channel to prevent replicating all messages that are currently in the replication log:

dse advrep channel status --source-keyspace foo --source-table bar --destinations mydest  --data-center-ids Cassandra

with a result:

Channel dc=Cassandra keyspace=foo table=bar to mydest was truncated

The source datacenter will be the datacenter in which the command is run. The keyspace and table names on the destination can be different than on the source, but in this example they are the same.