StateMetaInfoSnapshotReadersWriters (Flink : Runtime 2.1.0 API)

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.

Field Summary

Fields
Modifier and Type Field Description

static int CURRENT_STATE_META_INFO_SNAPSHOT_VERSION
Current version for the serialization format of StateMetaInfoSnapshotReadersWriters.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static StateMetaInfoReader`	`getReader(int readVersion)`	Returns a reader for `StateMetaInfoSnapshot` with the requested state type and version number.
`static StateMetaInfoWriter`	`getWriter()`	Returns the writer for `StateMetaInfoSnapshot`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - 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
    
    See Also:
    
    Constant Field Values
- Method Detail
  - getWriter
```
@Nonnull
public static StateMetaInfoWriter getWriter()
```
    Returns the writer for StateMetaInfoSnapshot.
  - getReader
```
@Nonnull
public static StateMetaInfoReader getReader(int readVersion)
```
    Returns a reader for StateMetaInfoSnapshot with the requested state type and version number.
    
    Parameters:
    
    readVersion - the format version to read.
    
    Returns:
    
    the requested reader.