Class Tablet (6.108.0)

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public final class Tablet extends GeneratedMessage implements TabletOrBuilder

A Tablet represents a single replica of a Group. A tablet is served by a single server at a time, and can move between servers due to server death or simply load balancing.

Protobuf type google.spanner.v1.Tablet

Inheritance

Object > AbstractMessageLite<MessageType,BuilderType> > AbstractMessage > GeneratedMessage > Tablet

Implements

TabletOrBuilder

Inherited Members

AbstractMessage.equals(Object)

AbstractMessage.findInitializationErrors()

AbstractMessage.getInitializationErrorString()

AbstractMessage.hashCode()

AbstractMessage.hashFields(int,Map<Descriptors.FieldDescriptor,Object>)

AbstractMessage.newBuilderForType(AbstractMessage.BuilderParent)

AbstractMessage.toString()

AbstractMessageLite.<T>addAll(Iterable<T>,List<? super T>)

AbstractMessageLite.checkByteStringIsUtf8(ByteString)

AbstractMessageLite.toByteArray()

AbstractMessageLite.toByteString()

AbstractMessageLite.writeDelimitedTo(OutputStream)

AbstractMessageLite.writeTo(OutputStream)

com.google.protobuf.GeneratedMessage.<ContainingT,T>newFileScopedGeneratedExtension(java.lang.Class<?>,com.google.protobuf.Message)

com.google.protobuf.GeneratedMessage.<ContainingT,T>newMessageScopedGeneratedExtension(com.google.protobuf.Message,int,java.lang.Class<?>,com.google.protobuf.Message)

com.google.protobuf.GeneratedMessage.<ListT>makeMutableCopy(ListT)

com.google.protobuf.GeneratedMessage.<ListT>makeMutableCopy(ListT,int)

GeneratedMessage.<M>parseDelimitedWithIOException(Parser<M>,InputStream)

GeneratedMessage.<M>parseDelimitedWithIOException(Parser<M>,InputStream,ExtensionRegistryLite)

GeneratedMessage.<M>parseWithIOException(Parser<M>,CodedInputStream)

GeneratedMessage.<M>parseWithIOException(Parser<M>,CodedInputStream,ExtensionRegistryLite)

GeneratedMessage.<M>parseWithIOException(Parser<M>,InputStream)

GeneratedMessage.<M>parseWithIOException(Parser<M>,InputStream,ExtensionRegistryLite)

com.google.protobuf.GeneratedMessage.<T>emptyList(java.lang.Class<T>)

com.google.protobuf.GeneratedMessage.<V>serializeBooleanMapTo(com.google.protobuf.CodedOutputStream,com.google.protobuf.MapField<java.lang.Boolean,V>,com.google.protobuf.MapEntry<java.lang.Boolean,V>,int)

com.google.protobuf.GeneratedMessage.<V>serializeIntegerMapTo(com.google.protobuf.CodedOutputStream,com.google.protobuf.MapField<java.lang.Integer,V>,com.google.protobuf.MapEntry<java.lang.Integer,V>,int)

com.google.protobuf.GeneratedMessage.<V>serializeLongMapTo(com.google.protobuf.CodedOutputStream,com.google.protobuf.MapField<java.lang.Long,V>,com.google.protobuf.MapEntry<java.lang.Long,V>,int)

com.google.protobuf.GeneratedMessage.<V>serializeStringMapTo(com.google.protobuf.CodedOutputStream,com.google.protobuf.MapField<java.lang.String,V>,com.google.protobuf.MapEntry<java.lang.String,V>,int)

com.google.protobuf.GeneratedMessage.canUseUnsafe()

GeneratedMessage.computeStringSize(int,Object)

GeneratedMessage.computeStringSizeNoTag(Object)

com.google.protobuf.GeneratedMessage.emptyBooleanList()

com.google.protobuf.GeneratedMessage.emptyDoubleList()

com.google.protobuf.GeneratedMessage.emptyFloatList()

com.google.protobuf.GeneratedMessage.emptyIntList()

com.google.protobuf.GeneratedMessage.emptyLongList()

GeneratedMessage.getAllFields()

GeneratedMessage.getDescriptorForType()

GeneratedMessage.getField(Descriptors.FieldDescriptor)

GeneratedMessage.getOneofFieldDescriptor(Descriptors.OneofDescriptor)

GeneratedMessage.getParserForType()

GeneratedMessage.getRepeatedField(Descriptors.FieldDescriptor,int)

GeneratedMessage.getRepeatedFieldCount(Descriptors.FieldDescriptor)

GeneratedMessage.getSerializedSize()

GeneratedMessage.getUnknownFields()

GeneratedMessage.hasField(Descriptors.FieldDescriptor)

GeneratedMessage.hasOneof(Descriptors.OneofDescriptor)

GeneratedMessage.internalGetFieldAccessorTable()

GeneratedMessage.internalGetMapField(int)

com.google.protobuf.GeneratedMessage.internalGetMapFieldReflection(int)

GeneratedMessage.isInitialized()

com.google.protobuf.GeneratedMessage.isStringEmpty(java.lang.Object)

GeneratedMessage.makeExtensionsImmutable()

com.google.protobuf.GeneratedMessage.mergeFromAndMakeImmutableInternal(com.google.protobuf.CodedInputStream,com.google.protobuf.ExtensionRegistryLite)

com.google.protobuf.GeneratedMessage.newInstance(com.google.protobuf.GeneratedMessage.UnusedPrivateParameter)

GeneratedMessage.parseUnknownField(CodedInputStream,UnknownFieldSet.Builder,ExtensionRegistryLite,int)

com.google.protobuf.GeneratedMessage.parseUnknownFieldProto3(com.google.protobuf.CodedInputStream,com.google.protobuf.UnknownFieldSet.Builder,com.google.protobuf.ExtensionRegistryLite,int)

GeneratedMessage.writeReplace()

GeneratedMessage.writeString(CodedOutputStream,int,Object)

GeneratedMessage.writeStringNoTag(CodedOutputStream,Object)

GeneratedMessage.writeTo(CodedOutputStream)

Object.clone()

Object.finalize()

Object.getClass()

Object.notify()

Object.notifyAll()

Object.wait()

Object.wait(long)

Object.wait(long,int)

Static Fields

DISTANCE_FIELD_NUMBER

public static final int DISTANCE_FIELD_NUMBER

Field Value
Type	Description
int

INCARNATION_FIELD_NUMBER

public static final int INCARNATION_FIELD_NUMBER

Field Value
Type	Description
int

LOCATION_FIELD_NUMBER

public static final int LOCATION_FIELD_NUMBER

Field Value
Type	Description
int

ROLE_FIELD_NUMBER

public static final int ROLE_FIELD_NUMBER

Field Value
Type	Description
int

SERVER_ADDRESS_FIELD_NUMBER

public static final int SERVER_ADDRESS_FIELD_NUMBER

Field Value
Type	Description
int

SKIP_FIELD_NUMBER

public static final int SKIP_FIELD_NUMBER

Field Value
Type	Description
int

TABLET_UID_FIELD_NUMBER

public static final int TABLET_UID_FIELD_NUMBER

Field Value
Type	Description
int

Static Methods

getDefaultInstance()

public static Tablet getDefaultInstance()

Returns
Type	Description
Tablet

getDescriptor()

public static final Descriptors.Descriptor getDescriptor()

Returns
Type	Description
Descriptor

newBuilder()

public static Tablet.Builder newBuilder()

Returns
Type	Description
Tablet.Builder

newBuilder(Tablet prototype)

public static Tablet.Builder newBuilder(Tablet prototype)

Parameter
Name	Description
prototype	Tablet

Returns
Type	Description
Tablet.Builder

parseDelimitedFrom(InputStream input)

public static Tablet parseDelimitedFrom(InputStream input)

Parameter
Name	Description
input	InputStream

Returns
Type	Description
Tablet

Exceptions
Type	Description
IOException

parseDelimitedFrom(InputStream input, ExtensionRegistryLite extensionRegistry)

public static Tablet parseDelimitedFrom(InputStream input, ExtensionRegistryLite extensionRegistry)

Parameters
Name	Description
input	InputStream
extensionRegistry	ExtensionRegistryLite

Returns
Type	Description
Tablet

Exceptions
Type	Description
IOException

parseFrom(byte[] data)

public static Tablet parseFrom(byte[] data)

Parameter
Name	Description
data	byte[]

Returns
Type	Description
Tablet

Exceptions
Type	Description
InvalidProtocolBufferException

parseFrom(byte[] data, ExtensionRegistryLite extensionRegistry)

public static Tablet parseFrom(byte[] data, ExtensionRegistryLite extensionRegistry)

Parameters
Name	Description
data	byte[]
extensionRegistry	ExtensionRegistryLite

Returns
Type	Description
Tablet

Exceptions
Type	Description
InvalidProtocolBufferException

parseFrom(ByteString data)

public static Tablet parseFrom(ByteString data)

Parameter
Name	Description
data	ByteString

Returns
Type	Description
Tablet

Exceptions
Type	Description
InvalidProtocolBufferException

parseFrom(ByteString data, ExtensionRegistryLite extensionRegistry)

public static Tablet parseFrom(ByteString data, ExtensionRegistryLite extensionRegistry)

Parameters
Name	Description
data	ByteString
extensionRegistry	ExtensionRegistryLite

Returns
Type	Description
Tablet

Exceptions
Type	Description
InvalidProtocolBufferException

parseFrom(CodedInputStream input)

public static Tablet parseFrom(CodedInputStream input)

Parameter
Name	Description
input	CodedInputStream

Returns
Type	Description
Tablet

Exceptions
Type	Description
IOException

parseFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)

public static Tablet parseFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)

Parameters
Name	Description
input	CodedInputStream
extensionRegistry	ExtensionRegistryLite

Returns
Type	Description
Tablet

Exceptions
Type	Description
IOException

parseFrom(InputStream input)

public static Tablet parseFrom(InputStream input)

Parameter
Name	Description
input	InputStream

Returns
Type	Description
Tablet

Exceptions
Type	Description
IOException

parseFrom(InputStream input, ExtensionRegistryLite extensionRegistry)

public static Tablet parseFrom(InputStream input, ExtensionRegistryLite extensionRegistry)

Parameters
Name	Description
input	InputStream
extensionRegistry	ExtensionRegistryLite

Returns
Type	Description
Tablet

Exceptions
Type	Description
IOException

parseFrom(ByteBuffer data)

public static Tablet parseFrom(ByteBuffer data)

Parameter
Name	Description
data	ByteBuffer

Returns
Type	Description
Tablet

Exceptions
Type	Description
InvalidProtocolBufferException

parseFrom(ByteBuffer data, ExtensionRegistryLite extensionRegistry)

public static Tablet parseFrom(ByteBuffer data, ExtensionRegistryLite extensionRegistry)

Parameters
Name	Description
data	ByteBuffer
extensionRegistry	ExtensionRegistryLite

Returns
Type	Description
Tablet

Exceptions
Type	Description
InvalidProtocolBufferException

parser()

public static Parser<Tablet> parser()

Returns
Type	Description
Parser<Tablet>

Methods

equals(Object obj)

public boolean equals(Object obj)

Parameter
Name	Description
obj	Object

Returns
Type	Description
boolean

Overrides

AbstractMessage.equals(Object other)

getDefaultInstanceForType()

public Tablet getDefaultInstanceForType()

Returns
Type	Description
Tablet

getDistance()

public int getDistance()

Distances help the client pick the closest tablet out of the list of tablets for a given request. Tablets with lower distances should generally be preferred. Tablets with the same distance are approximately equally close; the client can choose arbitrarily.

Distances do not correspond precisely to expected latency, geographical distance, or anything else. Distances should be compared only between tablets of the same group; they are not meaningful between different groups.

A value of zero indicates that the tablet may be in the same zone as the client, and have minimum network latency. A value less than or equal to five indicates that the tablet is thought to be in the same region as the client, and may have a few milliseconds of network latency. Values greater than five are most likely in a different region, with non-trivial network latency.

Clients should use the following algorithm:

• If the request is using a directed read, eliminate any tablets that do not match the directed read's target zone and/or replica type.
• (Read-write transactions only) Choose leader tablet if it has an distance <=5.
• Group and sort tablets by distance. Choose a random tablet with the lowest distance. If the request is not a directed read, only consider replicas with distances <=5.

• Send the request to the fallback endpoint.

  The tablet picked by this algorithm may be skipped, either because it is marked as skip by the server or because the corresponding server is unreachable, flow controlled, etc. Skipped tablets should be added to the skipped_tablet_uid field in RoutingHint; the algorithm above should then be re-run without including the skipped tablet(s) to pick the next best tablet.

uint32 distance = 6;

Returns
Type	Description
int	The distance.

getIncarnation()

public ByteString getIncarnation()

incarnation indicates the freshness of the tablet information contained in this proto. Incarnations can be compared lexicographically; if incarnation A is greater than incarnation B, then the Tablet corresponding to A is newer than the Tablet corresponding to B, and should be used preferentially.

bytes incarnation = 5;

Returns
Type	Description
ByteString	The incarnation.

getLocation()

public String getLocation()

Where this tablet is located. This is the name of a Google Cloud region, such as "us-central1".

string location = 3;

Returns
Type	Description
String	The location.

getLocationBytes()

public ByteString getLocationBytes()

Where this tablet is located. This is the name of a Google Cloud region, such as "us-central1".

string location = 3;

Returns
Type	Description
ByteString	The bytes for location.

getParserForType()

public Parser<Tablet> getParserForType()

Returns
Type	Description
Parser<Tablet>

Overrides

GeneratedMessage.getParserForType()

getRole()

public Tablet.Role getRole()

The role of the tablet.

.google.spanner.v1.Tablet.Role role = 4;

Returns
Type	Description
Tablet.Role	The role.

getRoleValue()

public int getRoleValue()

The role of the tablet.

.google.spanner.v1.Tablet.Role role = 4;

Returns
Type	Description
int	The enum numeric value on the wire for role.

getSerializedSize()

public int getSerializedSize()

Returns
Type	Description
int

Overrides

GeneratedMessage.getSerializedSize()

getServerAddress()

public String getServerAddress()

The address of the server that is serving this tablet -- either an IP address or DNS hostname and a port number.

string server_address = 2;

Returns
Type	Description
String	The serverAddress.

getServerAddressBytes()

public ByteString getServerAddressBytes()

The address of the server that is serving this tablet -- either an IP address or DNS hostname and a port number.

string server_address = 2;

Returns
Type	Description
ByteString	The bytes for serverAddress.

getSkip()

public boolean getSkip()

If true, the tablet should not be chosen by the client. Typically, this signals that the tablet is unhealthy in some way. Tablets with skip set to true should be reported back to the server in RoutingHint.skipped_tablet_uid; this cues the server to send updated information for this tablet should it become usable again.

bool skip = 7;

Returns
Type	Description
boolean	The skip.

getTabletUid()

public long getTabletUid()

The UID of the tablet, unique within the database. Matches the tablet_uids and leader_tablet_uid fields in Group.

uint64 tablet_uid = 1;

Returns
Type	Description
long	The tabletUid.

hashCode()

public int hashCode()

Returns
Type	Description
int

Overrides

AbstractMessage.hashCode()

internalGetFieldAccessorTable()

protected GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable()

Returns
Type	Description
FieldAccessorTable

Overrides

GeneratedMessage.internalGetFieldAccessorTable()

isInitialized()

public final boolean isInitialized()

Returns
Type	Description
boolean

Overrides

GeneratedMessage.isInitialized()

newBuilderForType()

public Tablet.Builder newBuilderForType()

Returns
Type	Description
Tablet.Builder

newBuilderForType(AbstractMessage.BuilderParent parent)

protected Tablet.Builder newBuilderForType(AbstractMessage.BuilderParent parent)

Parameter
Name	Description
parent	BuilderParent

Returns
Type	Description
Tablet.Builder

Overrides

AbstractMessage.newBuilderForType(AbstractMessage.BuilderParent parent)

toBuilder()

public Tablet.Builder toBuilder()

Returns
Type	Description
Tablet.Builder

writeTo(CodedOutputStream output)

public void writeTo(CodedOutputStream output)

Parameter
Name	Description
output	CodedOutputStream

Overrides

GeneratedMessage.writeTo(CodedOutputStream output)

Exceptions
Type	Description
IOException