org.apache.flink.runtime.state.metainfo

类 StateMetaInfoSnapshotReadersWriters

java.lang.Object

org.apache.flink.runtime.state.metainfo.StateMetaInfoSnapshotReadersWriters

public class StateMetaInfoSnapshotReadersWriters
extends Object

Static factory that gives out the write and readers for different versions of StateMetaInfoSnapshot.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	StateMetaInfoSnapshotReadersWriters.StateTypeHint Enum for backwards compatibility.

字段概要

字段

限定符和类型	字段和说明
static int	CURRENT_STATE_META_INFO_SNAPSHOT_VERSION Current version for the serialization format of StateMetaInfoSnapshotReadersWriters

方法概要

限定符和类型	方法和说明
static StateMetaInfoReader	getReader(int readVersion, StateMetaInfoSnapshotReadersWriters.StateTypeHint stateTypeHint) Returns a reader for StateMetaInfoSnapshot with the requested state type and version number.
static StateMetaInfoWriter	getWriter() Returns the writer for StateMetaInfoSnapshot.

从类继承的方法 java.lang.Object

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

字段详细资料

CURRENT_STATE_META_INFO_SNAPSHOT_VERSION

public static final int CURRENT_STATE_META_INFO_SNAPSHOT_VERSION

Current version for the serialization format of StateMetaInfoSnapshotReadersWriters. - v6: since Flink 1.7.x

另请参阅:

常量字段值

方法详细资料

getWriter

@Nonnull
public static StateMetaInfoWriter getWriter()

Returns the writer for StateMetaInfoSnapshot.

getReader

@Nonnull
public static StateMetaInfoReader getReader(int readVersion,
                                                     @Nonnull
                                                     StateMetaInfoSnapshotReadersWriters.StateTypeHint stateTypeHint)

Returns a reader for StateMetaInfoSnapshot with the requested state type and version number.

参数:

readVersion - the format version to read.

stateTypeHint - a hint about the expected type to read.

返回:

the requested reader.