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

object

ExecutionInfo

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: Cassandra

Assembly: Cassandra.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
IDictionary<string, 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(int)).

If this method returns

false

, clients can call CheckSchemaAgreementAsync() later to perform the check manually.

Declaration

public bool IsSchemaInAgreement { get; }

Property Value

Type	Description
bool	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
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
IList<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
string[]

Methods

GetQueryTraceAsync()

Gets the trace information for the query execution without blocking.

Declaration

public Task<QueryTrace> GetQueryTraceAsync()

Returns

Type	Description
Task<QueryTrace>