Package org.apache.hadoop.hbase.util

Class LocatedBlockHelper

java.lang.Object

org.apache.hadoop.hbase.util.LocatedBlockHelper

@Private
public final class LocatedBlockHelper
extends Object

hadoop 3.3.1 changed the return value of this method from DatanodeInfo[] to DatanodeInfoWithStorage[], which causes the JVM can not locate the method if we are compiled with hadoop 3.2 and then link with hadoop 3.3+, so here we need to use reflection to make it work for both hadoop versions, otherwise we need to publish more artifacts for different hadoop versions...

Field Summary

Fields

Modifier and Type	Field	Description
private static final Method	GET_LOCATED_BLOCK_LOCATIONS_METHOD

Constructor Summary

Constructors

Modifier	Constructor	Description
private	LocatedBlockHelper()

Method Summary

Modifier and Type	Method	Description
static org.apache.hadoop.hdfs.protocol.DatanodeInfo[]	getLocatedBlockLocations(org.apache.hadoop.hdfs.protocol.LocatedBlock block)

Methods inherited from class java.lang.Object

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

Field Details

GET_LOCATED_BLOCK_LOCATIONS_METHOD

private static final Method GET_LOCATED_BLOCK_LOCATIONS_METHOD

Constructor Details

LocatedBlockHelper

private LocatedBlockHelper()

Method Details

getLocatedBlockLocations

public static org.apache.hadoop.hdfs.protocol.DatanodeInfo[] getLocatedBlockLocations(org.apache.hadoop.hdfs.protocol.LocatedBlock block)