Package org.elasticsearch.xpack.esql.action

Class EsqlResolveFieldsResponse

java.lang.Object

org.elasticsearch.transport.TransportMessage

org.elasticsearch.transport.TransportResponse

org.elasticsearch.action.ActionResponse

org.elasticsearch.xpack.esql.action.EsqlResolveFieldsResponse

All Implemented Interfaces:

Writeable, org.elasticsearch.core.RefCounted

public class EsqlResolveFieldsResponse
extends ActionResponse

Nested Class Summary

Nested classes/interfaces inherited from class org.elasticsearch.action.ActionResponse

ActionResponse.Empty

Nested classes/interfaces inherited from interface org.elasticsearch.common.io.stream.Writeable

Writeable.Reader<V>, Writeable.Writer<V>

Field Summary

Fields

Modifier and Type	Field	Description
static final TransportVersion	RESOLVE_FIELDS_RESPONSE_USED_TV	Marks when we started using the minimum transport version to determine whether a data type is supported on all nodes.

Fields inherited from interface org.elasticsearch.core.RefCounted

ALWAYS_REFERENCED

Constructor Summary

Constructors

Constructor	Description
EsqlResolveFieldsResponse(FieldCapabilitiesResponse caps, TransportVersion minTransportVersion)
EsqlResolveFieldsResponse(StreamInput in)

Method Summary

Modifier and Type	Method	Description
FieldCapabilitiesResponse	caps()
TransportVersion	minTransportVersion()	The minimum TransportVersion of all clusters against which we resolved indices.
void	writeTo(StreamOutput out)

Methods inherited from class org.elasticsearch.transport.TransportMessage

decRef, hasReferences, incRef, tryIncRef

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.elasticsearch.core.RefCounted

mustIncRef

Field Details

RESOLVE_FIELDS_RESPONSE_USED_TV

public static final TransportVersion RESOLVE_FIELDS_RESPONSE_USED_TV

Marks when we started using the minimum transport version to determine whether a data type is supported on all nodes. This is about the coordinator - data nodes will be able to respond with the correct data as long as they're on the transport version required for the respective data types. See DataType.supportedVersion().

Note: this is in 9.2.1, but not 9.2.0 - in 9.2.0 we resorted to workarounds to sometimes enable DataType.DENSE_VECTOR and DataType.AGGREGATE_METRIC_DOUBLE, even though 9.2.0 nodes already support these types.

This means that mixed clusters with a 9.2.1 coordinator and 9.2.0 data nodes will properly support these types, but a 9.2.0 coordinator with 9.2.1+ nodes will still require the workaround.

Constructor Details

EsqlResolveFieldsResponse

public EsqlResolveFieldsResponse(FieldCapabilitiesResponse caps,
 TransportVersion minTransportVersion)

EsqlResolveFieldsResponse

public EsqlResolveFieldsResponse(StreamInput in)
                          throws IOException

Throws:

IOException

Method Details

writeTo

public void writeTo(StreamOutput out)
             throws IOException

Throws:

IOException

caps

public FieldCapabilitiesResponse caps()

minTransportVersion

@Nullable
public TransportVersion minTransportVersion()

The minimum TransportVersion of all clusters against which we resolved indices.

If this is null then one of the nodes is before RESOLVE_FIELDS_RESPONSE_CREATED_TV but we have no idea how early it is. Could be back in 8.19.0.