org.apache.flink.connector.hbase2.source

Class HBaseRowDataInputFormat

java.lang.Object

org.apache.flink.api.common.io.RichInputFormat<T,TableInputSplit>

org.apache.flink.connector.hbase2.source.AbstractTableInputFormat<RowData>

org.apache.flink.connector.hbase2.source.HBaseRowDataInputFormat

All Implemented Interfaces:

Serializable, InputFormat<RowData,TableInputSplit>, InputSplitSource<TableInputSplit>

public class HBaseRowDataInputFormat
extends AbstractTableInputFormat<RowData>

InputFormat subclass that wraps the access for HTables. Returns the result as RowData

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.flink.connector.hbase2.source.AbstractTableInputFormat

connection, currentRow, endReached, regionLocator, resultScanner, scan, scannedRows, serializedConfig, table

Constructor Summary

Constructors

Constructor and Description
HBaseRowDataInputFormat(Configuration conf, String tableName, HBaseTableSchema schema, String nullStringLiteral)

Method Summary

Modifier and Type	Method and Description
protected org.apache.hadoop.hbase.client.Scan	getScanner() Returns an instance of Scan that retrieves the required subset of records from the HBase table.
String	getTableName() What table is to be read.
protected void	initTable() Creates a Scan object and opens the HTable connection to initialize the HBase table.
protected RowData	mapResultToOutType(org.apache.hadoop.hbase.client.Result res) HBase returns an instance of Result.

Methods inherited from class org.apache.flink.connector.hbase2.source.AbstractTableInputFormat

close, closeTable, configure, createInputSplits, getConnection, getHadoopConfiguration, getInputSplitAssigner, getStatistics, includeRegionInScan, nextRecord, open, reachedEnd

Methods inherited from class org.apache.flink.api.common.io.RichInputFormat

closeInputFormat, getRuntimeContext, openInputFormat, setRuntimeContext

Methods inherited from class java.lang.Object

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

Constructor Detail

HBaseRowDataInputFormat

public HBaseRowDataInputFormat(Configuration conf,
                               String tableName,
                               HBaseTableSchema schema,
                               String nullStringLiteral)

Method Detail

initTable

protected void initTable()
                  throws IOException

Description copied from class: AbstractTableInputFormat

Creates a Scan object and opens the HTable connection to initialize the HBase table.

Specified by:

initTable in class AbstractTableInputFormat<RowData>

Throws:

IOException - Thrown, if the connection could not be opened due to an I/O problem.

getScanner

protected org.apache.hadoop.hbase.client.Scan getScanner()

Description copied from class: AbstractTableInputFormat

Returns an instance of Scan that retrieves the required subset of records from the HBase table.

Specified by:

getScanner in class AbstractTableInputFormat<RowData>

Returns:

The appropriate instance of Scan for this use case.

getTableName

public String getTableName()

Description copied from class: AbstractTableInputFormat

What table is to be read.

Per instance of a TableInputFormat derivative only a single table name is possible.

Specified by:

getTableName in class AbstractTableInputFormat<RowData>

Returns:

The name of the table

mapResultToOutType

protected RowData mapResultToOutType(org.apache.hadoop.hbase.client.Result res)

Description copied from class: AbstractTableInputFormat

HBase returns an instance of Result.

This method maps the returned Result instance into the output type T.

Specified by:

mapResultToOutType in class AbstractTableInputFormat<RowData>

Parameters:

res - The Result instance from HBase that needs to be converted

Returns:

The appropriate instance of T that contains the data of Result.