Package org.apache.hadoop.tools.fedbalance.procedure

Interface BalanceJournal

All Superinterfaces:

org.apache.hadoop.conf.Configurable

All Known Implementing Classes:

BalanceJournalInfoHDFS

public interface BalanceJournal
extends org.apache.hadoop.conf.Configurable

The Journal of the state machine. It handles the job persistence and recover.

Method Summary

Modifier and Type	Method	Description
void	clear(BalanceJob job)	Clear all the journals of this job.
BalanceJob[]	listAllJobs()	List all unfinished jobs.
void	recoverJob(BalanceJob job)	Recover the job from journal.
void	saveJob(BalanceJob job)	Save journal of this job.

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Method Detail

saveJob

void saveJob(BalanceJob job)
      throws java.io.IOException

Save journal of this job.

Throws:

java.io.IOException

recoverJob

void recoverJob(BalanceJob job)
         throws java.io.IOException

Recover the job from journal.

Throws:

java.io.IOException

listAllJobs

BalanceJob[] listAllJobs()
                  throws java.io.IOException

List all unfinished jobs.

Throws:

java.io.IOException

clear

void clear(BalanceJob job)
    throws java.io.IOException

Clear all the journals of this job.

Throws:

java.io.IOException