com.aliyun.odps.table.write.impl.batch

Class ArrowWriterImpl

java.lang.Object

com.aliyun.odps.table.write.impl.batch.ArrowWriterImpl

All Implemented Interfaces:

BatchWriter<org.apache.arrow.vector.VectorSchemaRoot>, Closeable, AutoCloseable

public class ArrowWriterImpl
extends Object
implements BatchWriter<org.apache.arrow.vector.VectorSchemaRoot>

Constructor Summary

Constructors

Constructor and Description
ArrowWriterImpl(String sessionId, TableIdentifier identifier, DataSchema schema, long blockNumber, WriterAttemptId attemptId, WriterOptions writerOptions, ArrowOptions arrowOptions)

Method Summary

Modifier and Type	Method and Description
void	abort() Aborts this writer if it is failed.
void	close()
WriterCommitMessage	commit() Commits this writer after all records are written successfully, returns a commit message which will be sent back to table sink
Metrics	currentMetricsValues() Returns metrics for this writer
org.apache.arrow.vector.VectorSchemaRoot	newElement() Returns an new element for BatchWriter.write(T)
void	write(org.apache.arrow.vector.VectorSchemaRoot root) Writes one element.

Methods inherited from class java.lang.Object

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

Constructor Detail

ArrowWriterImpl

public ArrowWriterImpl(String sessionId,
                       TableIdentifier identifier,
                       DataSchema schema,
                       long blockNumber,
                       WriterAttemptId attemptId,
                       WriterOptions writerOptions,
                       ArrowOptions arrowOptions)

Method Detail

newElement

public org.apache.arrow.vector.VectorSchemaRoot newElement()

Description copied from interface: BatchWriter

Returns an new element for BatchWriter.write(T)

Specified by:

newElement in interface BatchWriter<org.apache.arrow.vector.VectorSchemaRoot>

Returns:

write

public void write(org.apache.arrow.vector.VectorSchemaRoot root)
           throws IOException

Description copied from interface: BatchWriter

Writes one element.

If this method fails (by throwing an exception), BatchWriter.abort() will be called

Specified by:

write in interface BatchWriter<org.apache.arrow.vector.VectorSchemaRoot>

Throws:

IOException - if failure happens during IO.

abort

public void abort()
           throws IOException

Description copied from interface: BatchWriter

Aborts this writer if it is failed.

Specified by:

abort in interface BatchWriter<org.apache.arrow.vector.VectorSchemaRoot>

Throws:

IOException

commit

@Nullable
public WriterCommitMessage commit()
                                     throws IOException

Description copied from interface: BatchWriter

Commits this writer after all records are written successfully, returns a commit message which will be sent back to table sink

Specified by:

commit in interface BatchWriter<org.apache.arrow.vector.VectorSchemaRoot>

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException

currentMetricsValues

public Metrics currentMetricsValues()

Description copied from interface: BatchWriter

Returns metrics for this writer

Specified by:

currentMetricsValues in interface BatchWriter<org.apache.arrow.vector.VectorSchemaRoot>