Package org.apache.hadoop.hbase.regionserver

Interface FlushRequester

All Known Implementing Classes:

MemStoreFlusher

@Private
public interface FlushRequester

Request a flush.

Method Summary

Modifier and Type	Method	Description
void	registerFlushRequestListener(FlushRequestListener listener)	Register a FlushRequestListener
boolean	requestDelayedFlush(HRegion region, long delay)	Tell the listener the cache needs to be flushed after a delay
boolean	requestFlush(HRegion region, List<byte[]> families, FlushLifeCycleTracker tracker)	Tell the listener the cache needs to be flushed.
boolean	requestFlush(HRegion region, FlushLifeCycleTracker tracker)	Tell the listener the cache needs to be flushed.
void	setGlobalMemStoreLimit(long globalMemStoreSize)	Sets the global memstore limit to a new size.
boolean	unregisterFlushRequestListener(FlushRequestListener listener)	Unregister the given FlushRequestListener

Method Details

requestFlush

boolean requestFlush(HRegion region,
 FlushLifeCycleTracker tracker)

Tell the listener the cache needs to be flushed.

Parameters:

region - the Region requesting the cache flush

Returns:

true if our region is added into the queue, false otherwise

requestFlush

boolean requestFlush(HRegion region,
 List<byte[]> families,
 FlushLifeCycleTracker tracker)

Tell the listener the cache needs to be flushed.

Parameters:

region - the Region requesting the cache flush

families - stores of region to flush, if null then use flush policy

Returns:

true if our region is added into the queue, false otherwise

requestDelayedFlush

boolean requestDelayedFlush(HRegion region,
 long delay)

Tell the listener the cache needs to be flushed after a delay

Parameters:

region - the Region requesting the cache flush

delay - after how much time should the flush happen

Returns:

true if our region is added into the queue, false otherwise

registerFlushRequestListener

void registerFlushRequestListener(FlushRequestListener listener)

Register a FlushRequestListener

unregisterFlushRequestListener

boolean unregisterFlushRequestListener(FlushRequestListener listener)

Unregister the given FlushRequestListener

Returns:

true when passed listener is unregistered successfully.

setGlobalMemStoreLimit

void setGlobalMemStoreLimit(long globalMemStoreSize)

Sets the global memstore limit to a new size.