java.lang.Object
- org.apache.iotdb.db.engine.compaction.cross.utils.AbstractCompactionEstimator
- - org.apache.iotdb.db.engine.compaction.inner.AbstractInnerSpaceEstimator

```
public abstract class AbstractInnerSpaceEstimator
extends AbstractCompactionEstimator
```
Estimate the memory cost of one inner space compaction task with specific source files based on its corresponding implementation.

Field Summary
- Fields inherited from class org.apache.iotdb.db.engine.compaction.cross.utils.AbstractCompactionEstimator
  fileReaderCache

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`long`	`estimateCrossCompactionMemory(java.util.List<TsFileResource> seqResources, TsFileResource unseqResource)`	Estimate the memory cost of compacting the unseq file and its corresponding overlapped seq files in cross space compaction task.
`abstract long`	`estimateInnerCompactionMemory(java.util.List<TsFileResource> resources)`	Estimate the memory cost of compacting the source files in inner space compaction task.

Methods inherited from class org.apache.iotdb.db.engine.compaction.cross.utils.AbstractCompactionEstimator
clear, getFileReader

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

Class AbstractInnerSpaceEstimator