Package org.apache.accumulo.server.mem

Class LowMemoryDetector

java.lang.Object

org.apache.accumulo.server.mem.LowMemoryDetector

public class LowMemoryDetector
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	LowMemoryDetector.Action
static class	LowMemoryDetector.DetectionScope

Constructor Summary

Constructors

Constructor	Description
LowMemoryDetector()

Method Summary

Modifier and Type	Method	Description
long	getIntervalMillis(AccumuloConfiguration conf)
boolean	isRunningLowOnMemory()
boolean	isRunningLowOnMemory(ServerContext context, LowMemoryDetector.DetectionScope scope, Supplier<Boolean> isUserTable, LowMemoryDetector.Action action)
void	logGCInfo(AccumuloConfiguration conf)

Methods inherited from class java.lang.Object

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

Constructor Detail

LowMemoryDetector

public LowMemoryDetector()

Method Detail

getIntervalMillis

public long getIntervalMillis(AccumuloConfiguration conf)

isRunningLowOnMemory

public boolean isRunningLowOnMemory()

isRunningLowOnMemory

public boolean isRunningLowOnMemory(ServerContext context,
                                    LowMemoryDetector.DetectionScope scope,
                                    Supplier<Boolean> isUserTable,
                                    LowMemoryDetector.Action action)

Parameters:

context - server context

scope - whether this is being checked in the context of scan or compact code

isUserTable - boolean set true if the table being scanned / compacted is a user table. No action is taken for system tables.

action - Action to perform when this method returns true

Returns:

true if server running low on memory

logGCInfo

public void logGCInfo(AccumuloConfiguration conf)