程序包 org.apache.flink.iteration.datacache.nonkeyed

类 DataCacheWriter<T>

java.lang.Object

org.apache.flink.iteration.datacache.nonkeyed.DataCacheWriter<T>

public class DataCacheWriter<T>
extends Object

Records the data received and replayed them when required.

构造器概要

构造器

构造器	说明
DataCacheWriter(org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer, org.apache.flink.core.fs.FileSystem fileSystem, org.apache.flink.util.function.SupplierWithException<org.apache.flink.core.fs.Path,IOException> pathGenerator)
DataCacheWriter(org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer, org.apache.flink.core.fs.FileSystem fileSystem, org.apache.flink.util.function.SupplierWithException<org.apache.flink.core.fs.Path,IOException> pathGenerator, List<Segment> priorFinishedSegments)
DataCacheWriter(org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer, org.apache.flink.core.fs.FileSystem fileSystem, org.apache.flink.util.function.SupplierWithException<org.apache.flink.core.fs.Path,IOException> pathGenerator, org.apache.flink.table.runtime.util.MemorySegmentPool segmentPool)
DataCacheWriter(org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer, org.apache.flink.core.fs.FileSystem fileSystem, org.apache.flink.util.function.SupplierWithException<org.apache.flink.core.fs.Path,IOException> pathGenerator, org.apache.flink.table.runtime.util.MemorySegmentPool segmentPool, List<Segment> priorFinishedSegments)

方法概要

修饰符和类型	方法	说明
void	addRecord(T record)
void	clear()	Removes all previously added records.
List<Segment>	finish()	Finishes adding records and closes resources occupied for adding records.
List<Segment>	getSegments()	Flushes all added records to segments and returns a list of segments containing all cached records.
void	writeSegmentsToFiles()	Write the segments in this writer to files on disk.

从类继承的方法 java.lang.Object

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

构造器详细资料

DataCacheWriter

public DataCacheWriter(org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer,
                       org.apache.flink.core.fs.FileSystem fileSystem,
                       org.apache.flink.util.function.SupplierWithException<org.apache.flink.core.fs.Path,IOException> pathGenerator)
                throws IOException

抛出:

IOException

DataCacheWriter

public DataCacheWriter(org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer,
                       org.apache.flink.core.fs.FileSystem fileSystem,
                       org.apache.flink.util.function.SupplierWithException<org.apache.flink.core.fs.Path,IOException> pathGenerator,
                       org.apache.flink.table.runtime.util.MemorySegmentPool segmentPool)
                throws IOException

抛出:

IOException

DataCacheWriter

public DataCacheWriter(org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer,
                       org.apache.flink.core.fs.FileSystem fileSystem,
                       org.apache.flink.util.function.SupplierWithException<org.apache.flink.core.fs.Path,IOException> pathGenerator,
                       List<Segment> priorFinishedSegments)
                throws IOException

抛出:

IOException

DataCacheWriter

public DataCacheWriter(org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer,
                       org.apache.flink.core.fs.FileSystem fileSystem,
                       org.apache.flink.util.function.SupplierWithException<org.apache.flink.core.fs.Path,IOException> pathGenerator,
                       @Nullable
                       org.apache.flink.table.runtime.util.MemorySegmentPool segmentPool,
                       List<Segment> priorFinishedSegments)
                throws IOException

抛出:

IOException

方法详细资料

addRecord

public void addRecord(T record)
               throws IOException

抛出:

IOException

finish

public List<Segment> finish()
                     throws IOException

Finishes adding records and closes resources occupied for adding records.

抛出:

IOException

getSegments

public List<Segment> getSegments()
                          throws IOException

Flushes all added records to segments and returns a list of segments containing all cached records.

抛出:

IOException

clear

public void clear()
           throws IOException

Removes all previously added records.

抛出:

IOException

writeSegmentsToFiles

public void writeSegmentsToFiles()
                          throws IOException

Write the segments in this writer to files on disk.

抛出:

IOException