StripeStoreFlusher (Apache HBase 1.2.12 API)

java.lang.Object
- org.apache.hadoop.hbase.regionserver.StoreFlusher
- - org.apache.hadoop.hbase.regionserver.StripeStoreFlusher

```
@InterfaceAudience.Private
public class StripeStoreFlusher
extends StoreFlusher
```
Stripe implementation of StoreFlusher. Flushes files either into L0 file w/o metadata, or into separate striped files, avoiding L0.

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static class`	`StripeStoreFlusher.BoundaryStripeFlushRequest` Stripe flush request wrapper based on boundaries.
`static class`	`StripeStoreFlusher.SizeStripeFlushRequest` Stripe flush request wrapper based on size.
`static class`	`StripeStoreFlusher.StripeFlushRequest` Stripe flush request wrapper that writes a non-striped file.

Field Summary

Fields
Modifier and Type	Field and Description
`private Object`	`flushLock`
`private static org.apache.commons.logging.Log`	`LOG`
`private StripeCompactionPolicy`	`policy`
`private StripeCompactionPolicy.StripeInformationProvider`	`stripes`

Fields inherited from class org.apache.hadoop.hbase.regionserver.StoreFlusher
conf, store

Constructor Summary

Constructors
Constructor and Description
`StripeStoreFlusher(org.apache.hadoop.conf.Configuration conf, Store store, StripeCompactionPolicy policy, StripeStoreFileManager stripes)`

Method Summary

Methods
Modifier and Type	Method and Description
`private StripeMultiFileWriter.WriterFactory`	`createWriterFactory(TimeRangeTracker tracker, long kvCount)`
`List<org.apache.hadoop.fs.Path>`	`flushSnapshot(MemStoreSnapshot snapshot, long cacheFlushSeqNum, MonitoredTask status)` Turns a snapshot of memstore into a set of store files.

Methods inherited from class org.apache.hadoop.hbase.regionserver.StoreFlusher
createScanner, finalizeWriter, performFlush

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

LOG

private static final org.apache.commons.logging.Log LOG

flushLock
```
private final Object flushLock
```

policy

private final StripeCompactionPolicy policy

stripes

private final StripeCompactionPolicy.StripeInformationProvider stripes

Constructor Detail

StripeStoreFlusher

public StripeStoreFlusher(org.apache.hadoop.conf.Configuration conf,
                  Store store,
                  StripeCompactionPolicy policy,
                  StripeStoreFileManager stripes)

Method Detail

flushSnapshot
```
public List<org.apache.hadoop.fs.Path> flushSnapshot(MemStoreSnapshot snapshot,
                                            long cacheFlushSeqNum,
                                            MonitoredTask status)
                                              throws IOException
```
Description copied from class: StoreFlusher

Turns a snapshot of memstore into a set of store files.

Specified by:

flushSnapshot in class StoreFlusher

Parameters:
snapshot - Memstore snapshot.
cacheFlushSeqNum - Log cache flush sequence number.
status - Task that represents the flush operation and may be updated with status.

Returns:
List of files written. Can be empty; must not be null.

Throws:

IOException

createWriterFactory

private StripeMultiFileWriter.WriterFactory createWriterFactory(TimeRangeTracker tracker,
                                                      long kvCount)

Class StripeStoreFlusher

Nested Class Summary

Field Summary

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

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Field Detail

LOG

flushLock

policy

stripes

Constructor Detail

StripeStoreFlusher

Method Detail

flushSnapshot

createWriterFactory