alluxio.master.journal

Interface JournalContext

All Superinterfaces:

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

All Known Implementing Classes:

FileSystemMergeJournalContext, MasterJournalContext, MergeJournalContext, MetadataSyncMergeJournalContext, NoopJournalContext, StateChangeJournalContext

public interface JournalContext
extends Closeable, java.util.function.Supplier<JournalContext>

Context for storing journaling information.

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.
default JournalContext	get()

Method Detail

append

void append(Journal.JournalEntry entry)

Parameters:

entry - the Journal.JournalEntry to append to the journal

flush

void flush()
    throws UnavailableException

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.

Throws:

UnavailableException

get

default JournalContext get()

Specified by:

get in interface java.util.function.Supplier<JournalContext>

close

void close()
    throws UnavailableException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

UnavailableException