alluxio.master.journal

Class NoopJournalContext

java.lang.Object

alluxio.master.journal.NoopJournalContext

All Implemented Interfaces:

JournalContext, Closeable, AutoCloseable, java.util.function.Supplier<JournalContext>

@ThreadSafe
public final class NoopJournalContext
extends Object
implements JournalContext

Noop version of JournalContext.

Field Summary

Fields

Modifier and Type	Field and Description
static NoopJournalContext	INSTANCE

Method Summary

Modifier and Type	Method and Description
void	append(Journal.JournalEntry entry)
void	close()
void	flush() Flushes all the entries appended by the journal context so far.

Methods inherited from class java.lang.Object

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

Methods inherited from interface alluxio.master.journal.JournalContext

get

Field Detail

INSTANCE

public static final NoopJournalContext INSTANCE

Method Detail

append

public void append(Journal.JournalEntry entry)

Specified by:

append in interface JournalContext

Parameters:

entry - the Journal.JournalEntry to append to the journal

flush

public void flush()
           throws UnavailableException

Description copied from interface: JournalContext

Flushes all the entries appended by the journal context so far. This method can be called multiple times within the life cycle of the journal context The journals will be committed synchronously (example MasterJournalContext, or only added into the async journal writer (example MetadataSyncMergeJournalContext, based on different implementations.

Specified by:

flush in interface JournalContext

Throws:

UnavailableException

close

public void close()

Specified by:

close in interface JournalContext

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable