org.apache.flink.runtime.state.filesystem

Interface FileMergingCheckpointStateOutputStream.FileMergingSnapshotManagerProxy

Enclosing class:

FileMergingCheckpointStateOutputStream

public static interface FileMergingCheckpointStateOutputStream.FileMergingSnapshotManagerProxy

A proxy of the FileMergingSnapshotManager that owns this FileMergingCheckpointStateOutputStream, with the interfaces for dealing with physical files.

Method Summary

Modifier and Type	Method and Description
SegmentFileStateHandle	closeStreamAndCreateStateHandle(org.apache.flink.core.fs.Path filePath, long startPos, long stateSize) Close the stream and create a SegmentFileStateHandle for a file segment.
void	closeStreamExceptionally() Notify the FileMergingSnapshotManager that the stream is closed exceptionally.
org.apache.flink.api.java.tuple.Tuple2<org.apache.flink.core.fs.FSDataOutputStream,org.apache.flink.core.fs.Path>	providePhysicalFile() Provide a physical file.

Method Detail

providePhysicalFile

org.apache.flink.api.java.tuple.Tuple2<org.apache.flink.core.fs.FSDataOutputStream,org.apache.flink.core.fs.Path> providePhysicalFile()
                                                                                                                               throws IOException

Provide a physical file.

Returns:

Output stream and path of the physical file.

Throws:

IOException - if the physical file cannot be created or opened.

closeStreamAndCreateStateHandle

SegmentFileStateHandle closeStreamAndCreateStateHandle(org.apache.flink.core.fs.Path filePath,
                                                       long startPos,
                                                       long stateSize)
                                                throws IOException

Close the stream and create a SegmentFileStateHandle for a file segment.

Parameters:

filePath - Path of the physical file.

startPos - Start position of the segment in the physical file.

stateSize - Size of the segment.

Returns:

The state handle of the segment.

Throws:

IOException - if any exception happens when closing the file.

closeStreamExceptionally

void closeStreamExceptionally()
                       throws IOException

Notify the FileMergingSnapshotManager that the stream is closed exceptionally.

Throws:

IOException - if any exception happens when deleting the file.