Package org.apache.hadoop.hbase.regionserver

Interface Summary
ChangedReadersObserver If set of MapFile.Readers in Store change, implementors are notified.
ColumnTracker Implementing classes of this interface will be used for the tracking and enforcement of columns and numbers of versions during the course of a Get or Scan operation.
DeleteTracker This interface is used for the tracking and enforcement of Deletes during the course of a Get or Scan operation.
FlushRequester Implementors of this interface want to be notified when an HRegion determines that a cache flush is needed.
InternalScanner Internal scanners differ from client-side scanners in that they operate on HStoreKeys and byte[] instead of RowResults.
KeyValueScanner Scanner that returns the next KeyValue.
 

Class Summary
ColumnCount Simple wrapper for a byte buffer and a counter.
DebugPrint  
ExplicitColumnTracker This class is used for the tracking and enforcement of columns and numbers of versions during the course of a Get or Scan operation, when explicit column qualifiers have been asked for in the query.
HRegion HRegion stores data for a certain region of a table.
HRegionServer HRegionServer makes a set of HRegions available to clients.
KeyValueHeap Implements a heap merge across any number of KeyValueScanners.
LruHashMap<K extends HeapSize,V extends HeapSize> The LruHashMap is a memory-aware HashMap with a configurable maximum memory footprint.
LruHashMap.Entry<K extends HeapSize,V extends HeapSize> Entry to store key/value mappings.
MemStore The MemStore holds in-memory modifications to the Store.
MinorCompactingStoreScanner A scanner that does a minor compaction at the same time.
ReadWriteConsistencyControl Manages the read/write consistency within memstore.
ReadWriteConsistencyControl.WriteEntry  
ScanDeleteTracker This class is responsible for the tracking and enforcement of Deletes during the course of a Scan operation.
ScanQueryMatcher A query matcher that is specifically designed for the scan case.
ScanWildcardColumnTracker Keeps track of the columns for a scan if they are not explicitly specified
Store A Store holds a column family in a Region.
StoreFile A Store data file.
StoreFile.Reader Reader for a StoreFile.
StoreFile.Writer A StoreFile writer.
TimeRangeTracker Stores the minimum and maximum timestamp values.
 

Enum Summary
DeleteTracker.DeleteCompare Return codes for comparison of two Deletes.
ScanQueryMatcher.MatchCode ScanQueryMatcher.match(org.apache.hadoop.hbase.KeyValue) return codes.
StoreFile.BloomType  
 

Exception Summary
NoSuchColumnFamilyException Thrown if request for nonexistent column family.
RegionServerRunningException Thrown if the region server log directory exists (which indicates another region server is running at the same address)
WrongRegionException Thrown when a request contains a key which is not part of this region
 



Copyright © 2010 Apache Software Foundation. All Rights Reserved.