Exception: Cassandra::Errors::UnavailableError

Inherits:
StandardError
  • Object
show all
Includes:
ExecutionError
Defined in:
lib/cassandra/errors.rb

Overview

Note:

This error can be handled by a Retry::Policy to determine the desired outcome.

Raised when coordinator determines that a request cannot be executed because there are not enough replicas. In this scenario, the request is not sent to the nodes at all.

See Also:

Instance Attribute Summary collapse

Method Summary

Methods included from ExecutionError

#execution_info

Instance Attribute Details

#alive ⇒ Integer (readonly)

Returns the number of replicas available for the request.

Returns:

  • (Integer) —

    the number of replicas available for the request



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# File 'lib/cassandra/errors.rb', line 174

def alive
  @alive
end

#consistency ⇒ Symbol (readonly)

Consistency level that triggered the error.

Returns:

  • (Symbol) —

    the original consistency level for the request, one of CONSISTENCIES



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# File 'lib/cassandra/errors.rb', line 167

def consistency
  @consistency
end

#required ⇒ Integer (readonly)

Returns the number of replicas required to achieve requested consistency level.

Returns:

  • (Integer) —

    the number of replicas required to achieve requested consistency level



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# File 'lib/cassandra/errors.rb', line 171

def required
  @required
end