org.apache.flink.table.filesystem.stream.compact

Class CompactMessages

java.lang.Object

org.apache.flink.table.filesystem.stream.compact.CompactMessages

public class CompactMessages
extends Object

Util class for all compaction messages.

The compaction operator graph is: TempFileWriter|parallel ---(InputFile&EndInputFile)---> CompactCoordinator|non-parallel ---(CompactionUnit&EndCompaction)--->CompactOperator|parallel---(PartitionCommitInfo)---> PartitionCommitter|non-parallel

Because the end message is a kind of barrier of record messages, they can only be transmitted in the way of full broadcast in the link from coordinator to compact operator.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	CompactMessages.CompactionUnit The unit of a single compaction.
static interface	CompactMessages.CoordinatorInput The input of compact coordinator.
static interface	CompactMessages.CoordinatorOutput The output of compact coordinator.
static class	CompactMessages.EndCheckpoint A flag to end checkpoint, coordinator can start coordinating one checkpoint.
static class	CompactMessages.EndCompaction A flag to end compaction.
static class	CompactMessages.InputFile A partitioned input file.

Method Summary

Methods inherited from class java.lang.Object

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