Constructor Detail

• MockRandomMergePolicy

  public MockRandomMergePolicy​(Random random)

Method Detail

• findMerges

  public MergePolicy.MergeSpecification findMerges​(SegmentInfos segmentInfos)

  Description copied from class: MergePolicy
  Determine what set of merge operations are now necessary on the index. IndexWriter calls this whenever there is a change to the segments. This call is always synchronized on the IndexWriter instance so only one thread at a time will call this method.

  Specified by:

  findMerges in class MergePolicy

  Parameters:

  segmentInfos - the total set of segments in the index

• findForcedMerges

  public MergePolicy.MergeSpecification findForcedMerges​(SegmentInfos segmentInfos,
                                                         int maxSegmentCount,
                                                         Map<SegmentInfo,​Boolean> segmentsToMerge)
                                                  throws CorruptIndexException,
                                                         IOException

  Description copied from class: MergePolicy
  Determine what set of merge operations is necessary in order to merge to <= the specified segment count. IndexWriter calls this when its IndexWriter.forceMerge(int) method is called. This call is always synchronized on the IndexWriter instance so only one thread at a time will call this method.

  Specified by:

  findForcedMerges in class MergePolicy

  Parameters:

  segmentInfos - the total set of segments in the index

  maxSegmentCount - requested maximum number of segments in the index (currently this is always 1)

  segmentsToMerge - contains the specific SegmentInfo instances that must be merged away. This may be a subset of all SegmentInfos. If the value is True for a given SegmentInfo, that means this segment was an original segment present in the to-be-merged index; else, it was a segment produced by a cascaded merge.

  Throws:

  CorruptIndexException

  IOException

• findForcedDeletesMerges

  public MergePolicy.MergeSpecification findForcedDeletesMerges​(SegmentInfos segmentInfos)
                                                         throws CorruptIndexException,
                                                                IOException

  Description copied from class: MergePolicy
  Determine what set of merge operations is necessary in order to expunge all deletes from the index.

  Specified by:

  findForcedDeletesMerges in class MergePolicy

  Parameters:

  segmentInfos - the total set of segments in the index

  Throws:

  CorruptIndexException

  IOException

• close

  public void close()

  Description copied from class: MergePolicy
  Release all resources for the policy.

  Specified by:

  close in interface AutoCloseable

  Specified by:

  close in interface Closeable

  Specified by:

  close in class MergePolicy

• useCompoundFile

  public boolean useCompoundFile​(SegmentInfos infos,
                                 SegmentInfo mergedInfo)
                          throws IOException

  Description copied from class: MergePolicy
  Returns true if a new segment (regardless of its origin) should use the compound file format.

  Specified by:

  useCompoundFile in class MergePolicy

  Throws:

  IOException