org.apache.hadoop.hbase.regionserver
Class DefaultStoreFlusher
java.lang.Object
org.apache.hadoop.hbase.regionserver.DefaultStoreFlusher
@InterfaceAudience.Private
public class DefaultStoreFlusher
- extends Object
Default implementation of StoreFlusher.
Field Summary |
protected org.apache.hadoop.conf.Configuration |
conf
|
protected Store |
store
|
Method Summary |
protected InternalScanner |
createScanner(SortedSet<KeyValue> snapshot,
long smallestReadPoint)
Creates the scanner for flushing snapshot. |
protected void |
finalizeWriter(StoreFile.Writer writer,
long cacheFlushSeqNum,
MonitoredTask status)
|
List<org.apache.hadoop.fs.Path> |
flushSnapshot(SortedSet<KeyValue> snapshot,
long cacheFlushId,
TimeRangeTracker snapshotTimeRangeTracker,
AtomicLong flushedSize,
MonitoredTask status)
Turns a snapshot of memstore into a set of store files. |
protected long |
performFlush(InternalScanner scanner,
Compactor.CellSink sink,
long smallestReadPoint)
Performs memstore flush, writing data from scanner into sink. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
conf
protected org.apache.hadoop.conf.Configuration conf
store
protected Store store
DefaultStoreFlusher
public DefaultStoreFlusher(org.apache.hadoop.conf.Configuration conf,
Store store)
flushSnapshot
public List<org.apache.hadoop.fs.Path> flushSnapshot(SortedSet<KeyValue> snapshot,
long cacheFlushId,
TimeRangeTracker snapshotTimeRangeTracker,
AtomicLong flushedSize,
MonitoredTask status)
throws IOException
- Turns a snapshot of memstore into a set of store files.
- Parameters:
snapshot
- Memstore snapshot.cacheFlushId
- Log cache flush sequence number.snapshotTimeRangeTracker
- Time range tracker from the memstore
pertaining to the snapshot.flushedSize
- Out parameter for the size of the KVs flushed.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
finalizeWriter
protected void finalizeWriter(StoreFile.Writer writer,
long cacheFlushSeqNum,
MonitoredTask status)
throws IOException
- Throws:
IOException
createScanner
protected InternalScanner createScanner(SortedSet<KeyValue> snapshot,
long smallestReadPoint)
throws IOException
- Creates the scanner for flushing snapshot. Also calls coprocessors.
- Returns:
- The scanner; null if coprocessor is canceling the flush.
- Throws:
IOException
performFlush
protected long performFlush(InternalScanner scanner,
Compactor.CellSink sink,
long smallestReadPoint)
throws IOException
- Performs memstore flush, writing data from scanner into sink.
- Parameters:
scanner
- Scanner to get data from.sink
- Sink to write data to. Could be StoreFile.Writer.smallestReadPoint
- Smallest read point used for the flush.
- Returns:
- Bytes flushed.
- Throws:
IOException
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