Class ExecutionInfo

Basic information on the execution of a query.

This provides the following information on the execution of a (successful) query:

  • The list of Cassandra hosts tried in order (usually just one, unless a node has been tried but was dead/in error or a timeout provoked a retry (which depends on the RetryPolicy)).
  • The consistency level achieved by the query (usually the one asked, though some specific RetryPolicy may allow this to be different).
  • The query trace recorded by Cassandra if tracing had been set for the query.

Inheritance
System.Object
ExecutionInfo
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: Dse
Assembly: Dse.dll
Syntax
public class ExecutionInfo

Constructors

ExecutionInfo()

Declaration
public ExecutionInfo()

Properties

AchievedConsistency

Gets the final achieved consistency

Declaration
public ConsistencyLevel AchievedConsistency { get; }
Property Value
Type Description
ConsistencyLevel

IncomingPayload

Returns the incoming custom payload set by the server with its response, or null if the server have not include any custom payload.

This feature is only available for Cassandra 2.2 or above; with lower versions, this property always returns null.

Declaration
public IDictionary<string, byte[]> IncomingPayload { get; }
Property Value
Type Description
System.Collections.Generic.IDictionary<System.String, System.Byte[]>

IsSchemaInAgreement

After a successful schema-altering query (ex: creating a table), the driver will check if the cluster's nodes agree on the new schema version. If not, it will keep retrying for a given delay (configurable via WithMaxSchemaAgreementWaitSeconds(Int32)).

If this method returns 

false
, clients can call CheckSchemaAgreementAsync() later to perform the check manually.
Declaration
public bool IsSchemaInAgreement { get; }
Property Value
Type Description
System.Boolean

Whether the cluster reached schema agreement, or 

true
for a non schema-altering statement.
Remarks

Note that the schema agreement check is only performed for schema-altering queries For other query types, this method will always return 

true
.

QueriedHost

Retrieves the coordinator that responded to the request

Declaration
public IPEndPoint QueriedHost { get; }
Property Value
Type Description
System.Net.IPEndPoint

QueryTrace

Gets the trace for the query execution.

Declaration
public QueryTrace QueryTrace { get; }
Property Value
Type Description
QueryTrace

TriedHosts

Gets the list of host that were queried before getting a valid response, being the last host the one that replied correctly.

Declaration
public IList<IPEndPoint> TriedHosts { get; }
Property Value
Type Description
System.Collections.Generic.IList<System.Net.IPEndPoint>

Warnings

Returns the server-side warnings for this query.

This feature is only available for Cassandra 2.2 or above; with lower versions, this property always returns null.

Declaration
public string[] Warnings { get; }
Property Value
Type Description
System.String[]

Methods

GetQueryTraceAsync()

Gets the trace information for the query execution without blocking.

Declaration
public Task<QueryTrace> GetQueryTraceAsync()
Returns
Type Description
System.Threading.Tasks.Task<QueryTrace>