org.apache.hadoop.hbase.regionserver

Class DefaultStoreEngine

java.lang.Object

org.apache.hadoop.hbase.regionserver.StoreEngine<DefaultStoreFlusher,RatioBasedCompactionPolicy,DefaultCompactor,org.apache.hadoop.hbase.regionserver.DefaultStoreFileManager>

org.apache.hadoop.hbase.regionserver.DefaultStoreEngine

@InterfaceAudience.LimitedPrivate(value="Configuration")
public class DefaultStoreEngine
extends StoreEngine<DefaultStoreFlusher,RatioBasedCompactionPolicy,DefaultCompactor,org.apache.hadoop.hbase.regionserver.DefaultStoreFileManager>

Default StoreEngine creates the default compactor, policy, and store file manager, or their derivatives.

Field Summary

Fields

Modifier and Type	Field and Description
static String	DEFAULT_COMPACTION_POLICY_CLASS_KEY
static String	DEFAULT_COMPACTOR_CLASS_KEY
static String	DEFAULT_STORE_FLUSHER_CLASS_KEY

Fields inherited from class org.apache.hadoop.hbase.regionserver.StoreEngine

compactionPolicy, compactor, STORE_ENGINE_CLASS_KEY, storeFileManager, storeFlusher

Constructor Summary

Constructors

Constructor and Description
DefaultStoreEngine()

Method Summary

Methods

Modifier and Type	Method and Description
CompactionContext	createCompaction() Creates an instance of a compaction context specific to this engine.
protected void	createComponents(org.apache.hadoop.conf.Configuration conf, Store store, KeyValue.KVComparator kvComparator) Create the StoreEngine's components.
boolean	needsCompaction(List<StoreFile> filesCompacting)

Methods inherited from class org.apache.hadoop.hbase.regionserver.StoreEngine

create, getCompactionPolicy, getCompactor, getStoreFileManager, getStoreFlusher

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_STORE_FLUSHER_CLASS_KEY

public static final String DEFAULT_STORE_FLUSHER_CLASS_KEY

See Also:

Constant Field Values

DEFAULT_COMPACTOR_CLASS_KEY

public static final String DEFAULT_COMPACTOR_CLASS_KEY

See Also:

Constant Field Values

DEFAULT_COMPACTION_POLICY_CLASS_KEY

public static final String DEFAULT_COMPACTION_POLICY_CLASS_KEY

See Also:

Constant Field Values

Constructor Detail

DefaultStoreEngine

public DefaultStoreEngine()

Method Detail

needsCompaction

public boolean needsCompaction(List<StoreFile> filesCompacting)

Specified by:

needsCompaction in class StoreEngine<DefaultStoreFlusher,RatioBasedCompactionPolicy,DefaultCompactor,org.apache.hadoop.hbase.regionserver.DefaultStoreFileManager>

Parameters:

filesCompacting - Files currently compacting

Returns:

whether a compaction selection is possible

createComponents

protected void createComponents(org.apache.hadoop.conf.Configuration conf,
                    Store store,
                    KeyValue.KVComparator kvComparator)
                         throws IOException

Description copied from class: StoreEngine

Create the StoreEngine's components.

Specified by:

createComponents in class StoreEngine<DefaultStoreFlusher,RatioBasedCompactionPolicy,DefaultCompactor,org.apache.hadoop.hbase.regionserver.DefaultStoreFileManager>

Throws:

IOException

createCompaction

public CompactionContext createCompaction()

Description copied from class: StoreEngine

Creates an instance of a compaction context specific to this engine. Doesn't actually select or start a compaction. See CompactionContext class comment.

Specified by:

createCompaction in class StoreEngine<DefaultStoreFlusher,RatioBasedCompactionPolicy,DefaultCompactor,org.apache.hadoop.hbase.regionserver.DefaultStoreFileManager>

Returns:

New CompactionContext object.