alluxio.conf

Class Hash

java.lang.Object

alluxio.conf.Hash

@ThreadSafe
public final class Hash
extends Object

A hex encoded MD5 hash of the cluster or path configurations.

Constructor Summary

Constructors

Constructor and Description
Hash(java.util.function.Supplier<java.util.stream.Stream<byte[]>> properties)

Method Summary

Modifier and Type	Method and Description
String	get() If markOutdated() is called since last get(), then the version will be recomputed, otherwise, the internally cached version is returned.
long	getLastUpdateTime()
void	markOutdated() Called when the version needs to be updated.

Methods inherited from class java.lang.Object

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

Constructor Detail

Hash

public Hash(java.util.function.Supplier<java.util.stream.Stream<byte[]>> properties)

Parameters:

properties - a stream of encoded properties

Method Detail

markOutdated

public void markOutdated()

Called when the version needs to be updated. Internally, it just sets a flag to indicate that the version should be updated, but version will not be recomputed until get() is called.

get

public String get()

If markOutdated() is called since last get(), then the version will be recomputed, otherwise, the internally cached version is returned.

Returns:

the latest version

getLastUpdateTime

public long getLastUpdateTime()

Returns:

the latest update time