CompactionJobStats (schwefel 7.2.2.1 API)

java.lang.Object
- org.rocksdb.AbstractNativeReference
- - org.rocksdb.AbstractImmutableNativeReference
  - - org.rocksdb.RocksObject
    - - org.rocksdb.CompactionJobStats

All Implemented Interfaces:: AutoCloseable

public class CompactionJobStats
extends RocksObject

Field Summary
- Fields inherited from class org.rocksdb.RocksObject
  nativeHandle_
- Fields inherited from class org.rocksdb.AbstractImmutableNativeReference
  owningHandle_

Constructor Summary

Constructors
Constructor and Description

CompactionJobStats()

Constructors
Constructor and Description
`CompactionJobStats()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`add(CompactionJobStats compactionJobStats)` Aggregate the CompactionJobStats from another instance with this one.
`protected void`	`disposeInternal(long handle)`
`long`	`elapsedMicros()` Get the elapsed time in micro of this compaction.
`long`	`fileFsyncNanos()` Get the Time spent on file fsync.
`long`	`filePrepareWriteNanos()` Get the Time spent on preparing file write (falocate, etc) Only populated if `ColumnFamilyOptions.reportBgIoStats()` is set.
`long`	`fileRangeSyncNanos()` Get the Time spent on sync file range.
`long`	`fileWriteNanos()` Get the Time spent on file's Append() call.
`boolean`	`isManualCompaction()` Determine if the compaction is a manual compaction.
`byte[]`	`largestOutputKeyPrefix()` Get the largest output key prefix.
`long`	`numCorruptKeys()` Get the number of corrupt keys (ParseInternalKey returned false when applied to the key) encountered and written out.
`long`	`numExpiredDeletionRecords()` Get the number of deletion records that were found obsolete and discarded because it is not possible to delete any more keys with this entry.
`long`	`numInputDeletionRecords()` Get the number of deletion entries before compaction.
`long`	`numInputFiles()` Get the number of compaction input files.
`long`	`numInputFilesAtOutputLevel()` Get the number of compaction input files at the output level.
`long`	`numInputRecords()` Get the number of compaction input records.
`long`	`numOutputFiles()` Get the number of compaction output files.
`long`	`numOutputRecords()` Get the number of compaction output records.
`long`	`numRecordsReplaced()` Get the number of records being replaced by newer record associated with same key.
`long`	`numSingleDelFallthru()` Get the number of single-deletes which do not meet a put.
`long`	`numSingleDelMismatch()` Get the number of single-deletes which meet something other than a put.
`void`	`reset()` Reset the stats.
`byte[]`	`smallestOutputKeyPrefix()` Get the smallest output key prefix.
`long`	`totalInputBytes()` Get the size of the compaction input in bytes.
`long`	`totalInputRawKeyBytes()` Get the sum of the uncompressed input keys in bytes.
`long`	`totalInputRawValueBytes()` Get the sum of the uncompressed input values in bytes.
`long`	`totalOutputBytes()` Get the size of the compaction output in bytes.

Methods inherited from class org.rocksdb.RocksObject
disposeInternal, getNativeHandle

Methods inherited from class org.rocksdb.AbstractImmutableNativeReference
close, disOwnNativeHandle, isOwningHandle

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

- Constructor Detail
  - CompactionJobStats
```
public CompactionJobStats()
```
- Method Detail
  - reset
```
public void reset()
```
    Reset the stats.
  - add
```
public void add(CompactionJobStats compactionJobStats)
```
    Aggregate the CompactionJobStats from another instance with this one.
    
    Parameters:
    
    compactionJobStats - another instance of stats.
  - elapsedMicros
```
public long elapsedMicros()
```
    Get the elapsed time in micro of this compaction.
    
    Returns:
    
    the elapsed time in micro of this compaction.
  - numInputRecords
```
public long numInputRecords()
```
    Get the number of compaction input records.
    
    Returns:
    
    the number of compaction input records.
  - numInputFiles
```
public long numInputFiles()
```
    Get the number of compaction input files.
    
    Returns:
    
    the number of compaction input files.
  - numInputFilesAtOutputLevel
```
public long numInputFilesAtOutputLevel()
```
    Get the number of compaction input files at the output level.
    
    Returns:
    
    the number of compaction input files at the output level.
  - numOutputRecords
```
public long numOutputRecords()
```
    Get the number of compaction output records.
    
    Returns:
    
    the number of compaction output records.
  - numOutputFiles
```
public long numOutputFiles()
```
    Get the number of compaction output files.
    
    Returns:
    
    the number of compaction output files.
  - isManualCompaction
```
public boolean isManualCompaction()
```
    Determine if the compaction is a manual compaction.
    
    Returns:
    
    true if the compaction is a manual compaction, false otherwise.
  - totalInputBytes
```
public long totalInputBytes()
```
    Get the size of the compaction input in bytes.
    
    Returns:
    
    the size of the compaction input in bytes.
  - totalOutputBytes
```
public long totalOutputBytes()
```
    Get the size of the compaction output in bytes.
    
    Returns:
    
    the size of the compaction output in bytes.
  - numRecordsReplaced
```
public long numRecordsReplaced()
```
    Get the number of records being replaced by newer record associated with same key. This could be a new value or a deletion entry for that key so this field sums up all updated and deleted keys.
    
    Returns:
    
    the number of records being replaced by newer record associated with same key.
  - totalInputRawKeyBytes
```
public long totalInputRawKeyBytes()
```
    Get the sum of the uncompressed input keys in bytes.
    
    Returns:
    
    the sum of the uncompressed input keys in bytes.
  - totalInputRawValueBytes
```
public long totalInputRawValueBytes()
```
    Get the sum of the uncompressed input values in bytes.
    
    Returns:
    
    the sum of the uncompressed input values in bytes.
  - numInputDeletionRecords
```
public long numInputDeletionRecords()
```
    Get the number of deletion entries before compaction. Deletion entries can disappear after compaction because they expired.
    
    Returns:
    
    the number of deletion entries before compaction.
  - numExpiredDeletionRecords
```
public long numExpiredDeletionRecords()
```
    Get the number of deletion records that were found obsolete and discarded because it is not possible to delete any more keys with this entry. (i.e. all possible deletions resulting from it have been completed)
    
    Returns:
    
    the number of deletion records that were found obsolete and discarded.
  - numCorruptKeys
```
public long numCorruptKeys()
```
    Get the number of corrupt keys (ParseInternalKey returned false when applied to the key) encountered and written out.
    
    Returns:
    
    the number of corrupt keys.
  - fileWriteNanos
```
public long fileWriteNanos()
```
    Get the Time spent on file's Append() call. Only populated if ColumnFamilyOptions.reportBgIoStats() is set.
    
    Returns:
    
    the Time spent on file's Append() call.
  - fileRangeSyncNanos
```
public long fileRangeSyncNanos()
```
    Get the Time spent on sync file range. Only populated if ColumnFamilyOptions.reportBgIoStats() is set.
    
    Returns:
    
    the Time spent on sync file range.
  - fileFsyncNanos
```
public long fileFsyncNanos()
```
    Get the Time spent on file fsync. Only populated if ColumnFamilyOptions.reportBgIoStats() is set.
    
    Returns:
    
    the Time spent on file fsync.
  - filePrepareWriteNanos
```
public long filePrepareWriteNanos()
```
    Get the Time spent on preparing file write (falocate, etc) Only populated if ColumnFamilyOptions.reportBgIoStats() is set.
    
    Returns:
    
    the Time spent on preparing file write (falocate, etc).
  - smallestOutputKeyPrefix
```
public byte[] smallestOutputKeyPrefix()
```
    Get the smallest output key prefix.
    
    Returns:
    
    the smallest output key prefix.
  - largestOutputKeyPrefix
```
public byte[] largestOutputKeyPrefix()
```
    Get the largest output key prefix.
    
    Returns:
    
    the smallest output key prefix.
  - numSingleDelFallthru
```
@Experimental(value="Performance optimization for a very specific workload")
public long numSingleDelFallthru()
```
    Get the number of single-deletes which do not meet a put.
    
    Returns:
    
    number of single-deletes which do not meet a put.
  - numSingleDelMismatch
```
@Experimental(value="Performance optimization for a very specific workload")
public long numSingleDelMismatch()
```
    Get the number of single-deletes which meet something other than a put.
    
    Returns:
    
    the number of single-deletes which meet something other than a put.
  - disposeInternal
```
protected void disposeInternal(long handle)
```
    Specified by:
    
    disposeInternal in class RocksObject

Class CompactionJobStats

Field Summary

Fields inherited from class org.rocksdb.RocksObject

Fields inherited from class org.rocksdb.AbstractImmutableNativeReference

Constructor Summary

Method Summary

Methods inherited from class org.rocksdb.RocksObject

Methods inherited from class org.rocksdb.AbstractImmutableNativeReference

Methods inherited from class java.lang.Object

Constructor Detail

CompactionJobStats

Method Detail

reset

add

elapsedMicros

numInputRecords

numInputFiles

numInputFilesAtOutputLevel

numOutputRecords

numOutputFiles

isManualCompaction

totalInputBytes

totalOutputBytes

numRecordsReplaced

totalInputRawKeyBytes

totalInputRawValueBytes

numInputDeletionRecords

numExpiredDeletionRecords

numCorruptKeys

fileWriteNanos

fileRangeSyncNanos

fileFsyncNanos

filePrepareWriteNanos

smallestOutputKeyPrefix

largestOutputKeyPrefix

numSingleDelFallthru

numSingleDelMismatch

disposeInternal