org.apache.hadoop.hbase.client

类 MergeScanner

java.lang.Object

org.apache.hadoop.hbase.client.MergeScanner

所有已实现的接口:

Closeable, AutoCloseable, Iterable<Result>, ResultScanner

@InterfaceAudience.Private
 @InterfaceStability.Stable
public class MergeScanner
extends Object
implements ResultScanner

方法概要

限定符和类型	方法和说明
void	close() Closes the scanner and releases any resources it has allocated
ScanMetrics	getScanMetrics()
static Result	mergeResultsOfSameRow(Result r1, Result r2, int maxVersions)
Result	next() Grab the next row's worth of values.
boolean	renewLease() Allow the client to renew the scanner's lease on the server.

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.hadoop.hbase.client.ResultScanner

iterator, next

从接口继承的方法 java.lang.Iterable

forEach, spliterator

方法详细资料

next

public Result next()
            throws IOException

从接口复制的说明: ResultScanner

Grab the next row's worth of values. The scanner will return a Result.

指定者:

next 在接口中 ResultScanner

返回:

Result object if there is another row, null if the scanner is exhausted.

抛出:

IOException - e

close

public void close()

从接口复制的说明: ResultScanner

Closes the scanner and releases any resources it has allocated

指定者:

close 在接口中 Closeable

指定者:

close 在接口中 AutoCloseable

指定者:

close 在接口中 ResultScanner

renewLease

public boolean renewLease()

从接口复制的说明: ResultScanner

Allow the client to renew the scanner's lease on the server.

指定者:

renewLease 在接口中 ResultScanner

返回:

true if the lease was successfully renewed, false otherwise.

getScanMetrics

public ScanMetrics getScanMetrics()

指定者:

getScanMetrics 在接口中 ResultScanner

返回:

the scan metrics, or null if we do not enable metrics.

mergeResultsOfSameRow

public static Result mergeResultsOfSameRow(Result r1,
                                           Result r2,
                                           int maxVersions)