alluxio.master.journalv0

Interface Journal

All Known Subinterfaces:

MutableJournal

All Known Implementing Classes:

UfsJournal, UfsMutableJournal

@ThreadSafe
public interface Journal

The read-only journal. It prevents access to a JournalWriter.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	Journal.Factory A Journal factory.

Method Summary

Modifier and Type	Method and Description
URI	getLocation()
JournalReader	getReader()
boolean	isFormatted()

Method Detail

getLocation

URI getLocation()

Returns:

the journal location

getReader

JournalReader getReader()

Returns:

the JournalReader for this journal

isFormatted

boolean isFormatted()
             throws IOException

Returns:

whether the journal has been formatted

Throws:

IOException