BalancedSegmentMergePolicy (Lucene 3.6.2 API)

java.lang.Object
- org.apache.lucene.index.MergePolicy
- - org.apache.lucene.index.LogMergePolicy
  - - org.apache.lucene.index.LogByteSizeMergePolicy
    - - org.apache.lucene.index.BalancedSegmentMergePolicy

All Implemented Interfaces:

Closeable, AutoCloseable
```
@Deprecated
public class BalancedSegmentMergePolicy
extends org.apache.lucene.index.LogByteSizeMergePolicy
```
Deprecated.
This class is removed in 4.0; use TieredMergePolicy instead.

Merge policy that tries to balance not doing large segment merges with not accumulating too many segments in the index, to provide for better performance in near real-time setting.
This is based on code from zoie, described in more detail at http://code.google.com/p/zoie/wiki/ZoieMergePolicy.

WARNING: there is a known bug in this merge policy that causes it to run forever, merging the same single segment over and over. If you use SerialMergeScheduler this can cause an index thread to hang forever merging. See LUCENE-4269 for details.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class BalancedSegmentMergePolicy.MergePolicyParams
Deprecated.

Specifies configuration parameters for BalancedSegmentMergePolicy.
- Nested classes/interfaces inherited from class org.apache.lucene.index.MergePolicy
  org.apache.lucene.index.MergePolicy.MergeAbortedException, org.apache.lucene.index.MergePolicy.MergeException, org.apache.lucene.index.MergePolicy.MergeSpecification, org.apache.lucene.index.MergePolicy.OneMerge

Nested Classes
Modifier and Type	Class	Description
`static class`	`BalancedSegmentMergePolicy.MergePolicyParams`	Deprecated. Specifies configuration parameters for BalancedSegmentMergePolicy.

Field Summary

Fields
Modifier and Type Field Description

static int DEFAULT_NUM_LARGE_SEGMENTS
Deprecated.
- Fields inherited from class org.apache.lucene.index.LogByteSizeMergePolicy
  DEFAULT_MAX_MERGE_MB, DEFAULT_MAX_MERGE_MB_FOR_FORCED_MERGE, DEFAULT_MIN_MERGE_MB
- Fields inherited from class org.apache.lucene.index.LogMergePolicy
  calibrateSizeByDeletes, DEFAULT_MAX_MERGE_DOCS, DEFAULT_MERGE_FACTOR, DEFAULT_NO_CFS_RATIO, LEVEL_LOG_SPAN, maxMergeDocs, maxMergeSize, maxMergeSizeForForcedMerge, mergeFactor, minMergeSize, noCFSRatio, useCompoundFile
- Fields inherited from class org.apache.lucene.index.MergePolicy
  writer

Fields
Modifier and Type	Field	Description
`static int`	`DEFAULT_NUM_LARGE_SEGMENTS`	Deprecated.

Constructor Summary

Constructors
Constructor Description

BalancedSegmentMergePolicy()
Deprecated.

Constructors
Constructor	Description
`BalancedSegmentMergePolicy()`	Deprecated.

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`org.apache.lucene.index.MergePolicy.MergeSpecification`	`findForcedDeletesMerges(org.apache.lucene.index.SegmentInfos infos)`	Deprecated.
`org.apache.lucene.index.MergePolicy.MergeSpecification`	`findForcedMerges(org.apache.lucene.index.SegmentInfos infos, int maxNumSegments, Map<org.apache.lucene.index.SegmentInfo,Boolean> segmentsToMerge)`	Deprecated.
`org.apache.lucene.index.MergePolicy.MergeSpecification`	`findMerges(org.apache.lucene.index.SegmentInfos infos)`	Deprecated.
`int`	`getMaxSmallSegments()`	Deprecated.
`int`	`getNumLargeSegments()`	Deprecated.
`boolean`	`getPartialExpunge()`	Deprecated.
`void`	`setMaxSmallSegments(int maxSmallSegments)`	Deprecated.
`void`	`setMergeFactor(int mergeFactor)`	Deprecated.
`void`	`setMergePolicyParams(BalancedSegmentMergePolicy.MergePolicyParams params)`	Deprecated.
`void`	`setNumLargeSegments(int numLargeSegments)`	Deprecated.
`void`	`setPartialExpunge(boolean doPartialExpunge)`	Deprecated.
`protected long`	`size(org.apache.lucene.index.SegmentInfo info)`	Deprecated.

Methods inherited from class org.apache.lucene.index.LogByteSizeMergePolicy
getMaxMergeMB, getMaxMergeMBForForcedMerge, getMaxMergeMBForOptimize, getMinMergeMB, setMaxMergeMB, setMaxMergeMBForForcedMerge, setMaxMergeMBForOptimize, setMinMergeMB

Methods inherited from class org.apache.lucene.index.LogMergePolicy
close, getCalibrateSizeByDeletes, getMaxMergeDocs, getMergeFactor, getNoCFSRatio, getUseCompoundFile, isMerged, isMerged, message, setCalibrateSizeByDeletes, setMaxMergeDocs, setNoCFSRatio, setUseCompoundFile, sizeBytes, sizeDocs, toString, useCompoundFile, verbose

Methods inherited from class org.apache.lucene.index.MergePolicy
setIndexWriter

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

Field Detail
- DEFAULT_NUM_LARGE_SEGMENTS
```
public static final int DEFAULT_NUM_LARGE_SEGMENTS
```
  Deprecated.
  
  See Also:
  
  Constant Field Values

Constructor Detail
- BalancedSegmentMergePolicy
```
public BalancedSegmentMergePolicy()
```
  Deprecated.

Method Detail

setMergePolicyParams

public void setMergePolicyParams(BalancedSegmentMergePolicy.MergePolicyParams params)

Deprecated.

size
```
protected long size(org.apache.lucene.index.SegmentInfo info)
             throws IOException
```
Deprecated.

Overrides:

size in class org.apache.lucene.index.LogByteSizeMergePolicy

Throws:

IOException

setPartialExpunge

public void setPartialExpunge(boolean doPartialExpunge)

Deprecated.

getPartialExpunge
```
public boolean getPartialExpunge()
```
Deprecated.

setNumLargeSegments

public void setNumLargeSegments(int numLargeSegments)

Deprecated.

getNumLargeSegments
```
public int getNumLargeSegments()
```
Deprecated.

setMaxSmallSegments

public void setMaxSmallSegments(int maxSmallSegments)

Deprecated.

getMaxSmallSegments
```
public int getMaxSmallSegments()
```
Deprecated.

setMergeFactor
```
public void setMergeFactor(int mergeFactor)
```
Deprecated.

Overrides:

setMergeFactor in class org.apache.lucene.index.LogMergePolicy

findForcedMerges

public org.apache.lucene.index.MergePolicy.MergeSpecification findForcedMerges(org.apache.lucene.index.SegmentInfos infos,
                                                                               int maxNumSegments,
                                                                               Map<org.apache.lucene.index.SegmentInfo,Boolean> segmentsToMerge)
                                                                        throws IOException

Deprecated.

Overrides:: findForcedMerges in class org.apache.lucene.index.LogMergePolicy
Throws:: IOException

findForcedDeletesMerges

public org.apache.lucene.index.MergePolicy.MergeSpecification findForcedDeletesMerges(org.apache.lucene.index.SegmentInfos infos)
                                                                               throws org.apache.lucene.index.CorruptIndexException,
                                                                                      IOException

Deprecated.

Overrides:: findForcedDeletesMerges in class org.apache.lucene.index.LogMergePolicy
Throws:: org.apache.lucene.index.CorruptIndexException; IOException

findMerges

public org.apache.lucene.index.MergePolicy.MergeSpecification findMerges(org.apache.lucene.index.SegmentInfos infos)
                                                                  throws IOException

Deprecated.

Overrides:: findMerges in class org.apache.lucene.index.LogMergePolicy
Throws:: IOException

Class BalancedSegmentMergePolicy

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.index.MergePolicy

Field Summary

Fields inherited from class org.apache.lucene.index.LogByteSizeMergePolicy

Fields inherited from class org.apache.lucene.index.LogMergePolicy

Fields inherited from class org.apache.lucene.index.MergePolicy

Constructor Summary

Method Summary

Methods inherited from class org.apache.lucene.index.LogByteSizeMergePolicy

Methods inherited from class org.apache.lucene.index.LogMergePolicy

Methods inherited from class org.apache.lucene.index.MergePolicy

Methods inherited from class java.lang.Object

Field Detail

DEFAULT_NUM_LARGE_SEGMENTS

Constructor Detail

BalancedSegmentMergePolicy

Method Detail

setMergePolicyParams

size

setPartialExpunge

getPartialExpunge

setNumLargeSegments

getNumLargeSegments

setMaxSmallSegments

getMaxSmallSegments

setMergeFactor

findForcedMerges

findForcedDeletesMerges

findMerges