Package org.apache.hadoop.yarn.server.resourcemanager

Class DBManager

java.lang.Object

org.apache.hadoop.yarn.server.resourcemanager.DBManager

All Implemented Interfaces:

Closeable, AutoCloseable

public class DBManager
extends Object
implements Closeable

Field Summary

Fields

Modifier and Type	Field	Description
static final org.slf4j.Logger	LOG

Constructor Summary

Constructors

Constructor	Description
DBManager()

Method Summary

Modifier and Type	Method	Description
void	close()
org.iq80.leveldb.DB	initDatabase(File configurationFile, org.iq80.leveldb.Options options, Consumer<org.iq80.leveldb.DB> initMethod)
org.apache.hadoop.yarn.server.records.Version	loadVersion(String versionKey)
void	setDb(org.iq80.leveldb.DB db)
void	startCompactionTimer(long compactionIntervalMsec, String className)
void	storeVersion(String versionKey, org.apache.hadoop.yarn.server.records.Version versionValue)

Methods inherited from class java.lang.Object

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

Field Details

LOG

public static final org.slf4j.Logger LOG

Constructor Details

DBManager

public DBManager()

Method Details

initDatabase

public org.iq80.leveldb.DB initDatabase(File configurationFile,
 org.iq80.leveldb.Options options,
 Consumer<org.iq80.leveldb.DB> initMethod)
                                 throws Exception

Throws:

Exception

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException

storeVersion

public void storeVersion(String versionKey,
 org.apache.hadoop.yarn.server.records.Version versionValue)

loadVersion

public org.apache.hadoop.yarn.server.records.Version loadVersion(String versionKey)
                                                          throws Exception

Throws:

Exception

setDb

@VisibleForTesting
public void setDb(org.iq80.leveldb.DB db)

startCompactionTimer

public void startCompactionTimer(long compactionIntervalMsec,
 String className)