Package org.apache.cassandra.io.sstable.metadata

Interface IMetadataSerializer

All Known Implementing Classes:

MetadataSerializer

public interface IMetadataSerializer

Interface for SSTable metadata serializer

Method Summary

Modifier and Type	Method	Description
java.util.Map<MetadataType,MetadataComponent>	deserialize(Descriptor descriptor, java.util.EnumSet<MetadataType> types)	Deserialize specified metadata components from given descriptor.
MetadataComponent	deserialize(Descriptor descriptor, MetadataType type)	Deserialized only metadata component specified from given descriptor.
void	mutate(Descriptor descriptor, java.lang.String description, java.util.function.UnaryOperator<StatsMetadata> transform)	Mutate SSTable Metadata NOTE: mutating stats metadata of a live sstable will race with entire-sstable-streaming, please use SSTableReader.mutateLevelAndReload(int) instead on live sstable.
void	mutateLevel(Descriptor descriptor, int newLevel)	Mutate SSTable level NOTE: mutating stats metadata of a live sstable will race with entire-sstable-streaming, please use SSTableReader.mutateLevelAndReload(int) instead on live sstable.
void	mutateRepairMetadata(Descriptor descriptor, long newRepairedAt, TimeUUID newPendingRepair, boolean isTransient)	Mutate the repairedAt time, pendingRepair ID, and transient status.
void	rewriteSSTableMetadata(Descriptor descriptor, java.util.Map<MetadataType,MetadataComponent> currentComponents)	Replace the sstable metadata file (-Statistics.db) with the given components.
void	serialize(java.util.Map<MetadataType,MetadataComponent> components, DataOutputPlus out, Version version)	Serialize given metadata components

Method Detail

serialize

void serialize(java.util.Map<MetadataType,MetadataComponent> components,
               DataOutputPlus out,
               Version version)
        throws java.io.IOException

Serialize given metadata components

Parameters:

components - Metadata components to serialize

out -

version -

Throws:

java.io.IOException

deserialize

java.util.Map<MetadataType,MetadataComponent> deserialize(Descriptor descriptor,
                                                                java.util.EnumSet<MetadataType> types)
                                                         throws java.io.IOException

Deserialize specified metadata components from given descriptor.

Parameters:

descriptor - SSTable descriptor

Returns:

Deserialized metadata components, in deserialized order.

Throws:

java.io.IOException

deserialize

MetadataComponent deserialize(Descriptor descriptor,
                              MetadataType type)
                       throws java.io.IOException

Deserialized only metadata component specified from given descriptor.

Parameters:

descriptor - SSTable descriptor

type - Metadata component type to deserialize

Returns:

Deserialized metadata component. Can be null if specified type does not exist.

Throws:

java.io.IOException

mutate

void mutate(Descriptor descriptor,
            java.lang.String description,
            java.util.function.UnaryOperator<StatsMetadata> transform)
     throws java.io.IOException

Mutate SSTable Metadata NOTE: mutating stats metadata of a live sstable will race with entire-sstable-streaming, please use SSTableReader.mutateLevelAndReload(int) instead on live sstable.

Parameters:

descriptor - SSTable descriptor

description - on changed attributions

transform - function to mutate sstable metadata

Throws:

java.io.IOException

mutateLevel

void mutateLevel(Descriptor descriptor,
                 int newLevel)
          throws java.io.IOException

Mutate SSTable level NOTE: mutating stats metadata of a live sstable will race with entire-sstable-streaming, please use SSTableReader.mutateLevelAndReload(int) instead on live sstable.

Parameters:

descriptor - SSTable descriptor

newLevel - new SSTable level

Throws:

java.io.IOException

mutateRepairMetadata

void mutateRepairMetadata(Descriptor descriptor,
                          long newRepairedAt,
                          TimeUUID newPendingRepair,
                          boolean isTransient)
                   throws java.io.IOException

Mutate the repairedAt time, pendingRepair ID, and transient status. NOTE: mutating stats metadata of a live sstable will race with entire-sstable-streaming, please use SSTableReader.mutateLevelAndReload(int) instead on live sstable.

Throws:

java.io.IOException

rewriteSSTableMetadata

void rewriteSSTableMetadata(Descriptor descriptor,
                            java.util.Map<MetadataType,MetadataComponent> currentComponents)
                     throws java.io.IOException

Replace the sstable metadata file (-Statistics.db) with the given components.

Throws:

java.io.IOException