org.apache.flink.connector.mongodb.source.enumerator.assigner

Interface MongoSplitAssigner

All Known Implementing Classes:

MongoScanSplitAssigner

@Internal
public interface MongoSplitAssigner

The split assigner for MongoSourceSplit.

Method Summary

Modifier and Type	Method and Description
void	addSplitsBack(Collection<MongoSourceSplit> splits) Adds a set of splits to this assigner.
void	close() Called to close the assigner, in case it holds on to any resources, like threads or network connections.
Optional<MongoSourceSplit>	getNext() Gets the next split to assign to MongoSourceSplitReader when MongoSourceEnumerator receives a split request, until there are noMoreSplits().
boolean	noMoreSplits() Return whether there are no more splits.
void	open() Called to open the assigner to acquire any resources, like threads or network connections.
MongoSourceEnumState	snapshotState(long checkpointId) Snapshot the current assign state into checkpoint.

Method Detail

open

void open()

Called to open the assigner to acquire any resources, like threads or network connections.

close

void close()
    throws IOException

Called to close the assigner, in case it holds on to any resources, like threads or network connections.

Throws:

IOException

getNext

Optional<MongoSourceSplit> getNext()

Gets the next split to assign to MongoSourceSplitReader when MongoSourceEnumerator receives a split request, until there are noMoreSplits().

addSplitsBack

void addSplitsBack(Collection<MongoSourceSplit> splits)

Adds a set of splits to this assigner. This happens for example when some split processing failed and the splits need to be re-added.

snapshotState

MongoSourceEnumState snapshotState(long checkpointId)

Snapshot the current assign state into checkpoint.

noMoreSplits

boolean noMoreSplits()

Return whether there are no more splits.