org.apache.hadoop.hbase.regionserver
Class DateTieredStoreEngine
java.lang.Object
org.apache.hadoop.hbase.regionserver.StoreEngine<DefaultStoreFlusher,DateTieredCompactionPolicy,DateTieredCompactor,org.apache.hadoop.hbase.regionserver.DefaultStoreFileManager>
org.apache.hadoop.hbase.regionserver.DateTieredStoreEngine
@InterfaceAudience.Private
public class DateTieredStoreEngine
- extends StoreEngine<DefaultStoreFlusher,DateTieredCompactionPolicy,DateTieredCompactor,org.apache.hadoop.hbase.regionserver.DefaultStoreFileManager>
HBASE-15400 This store engine allows us to store data in date tiered layout with exponential sizing
so that the more recent data has more granularity. Time-range scan will perform the best with most recent data.
When data reach maxAge, they are compacted in fixed-size time windows for TTL and archiving.
Please refer to design spec for more details.
https://docs.google.com/document/d/1_AmlNb2N8Us1xICsTeGDLKIqL6T-oHoRLZ323MG_uy8/edit#heading=h.uk6y5pd3oqgx
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
DateTieredStoreEngine
public DateTieredStoreEngine()
needsCompaction
public boolean needsCompaction(List<StoreFile> filesCompacting)
- Specified by:
needsCompaction
in class StoreEngine<DefaultStoreFlusher,DateTieredCompactionPolicy,DateTieredCompactor,org.apache.hadoop.hbase.regionserver.DefaultStoreFileManager>
- Parameters:
filesCompacting
- Files currently compacting
- Returns:
- whether a compaction selection is possible
createCompaction
public CompactionContext createCompaction()
throws IOException
- 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,DateTieredCompactionPolicy,DateTieredCompactor,org.apache.hadoop.hbase.regionserver.DefaultStoreFileManager>
- Returns:
- New CompactionContext object.
- Throws:
IOException
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,DateTieredCompactionPolicy,DateTieredCompactor,org.apache.hadoop.hbase.regionserver.DefaultStoreFileManager>
- Throws:
IOException
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