1Lucy::Index::BackgroundUMseerrgeCro(n3t)ributed Perl DocLuumceyn:t:aItnidoenx::BackgroundMerger(3)
2
3
4

NAME

6       Lucy::Index::BackgroundMerger - Consolidate index segments in the
7       background.
8

SYNOPSIS

10           my $bg_merger = Lucy::Index::BackgroundMerger->new(
11               index  => '/path/to/index',
12           );
13           $bg_merger->commit;
14

DESCRIPTION

16       Adding documents to an index is usually fast, but every once in a while
17       the index must be compacted and an update takes substantially longer to
18       complete.  See FastUpdates for how to use this class to control worst-
19       case index update performance.
20
21       As with Indexer, see FileLocking if your index is on a shared volume.
22

CONSTRUCTORS

24   new
25           my $bg_merger = Lucy::Index::BackgroundMerger->new(
26               index   => '/path/to/index',    # required
27               manager => $manager             # default: created internally
28           );
29
30       Open a new BackgroundMerger.
31
32index - Either a string filepath or a Folder.
33
34manager - An IndexManager.  If not supplied, an IndexManager with a
35           10-second write lock timeout will be created.
36

METHODS

38   optimize
39           $background_merger->optimize();
40
41       Optimize the index for search-time performance.  This may take a while,
42       as it can involve rewriting large amounts of data.
43
44   commit
45           $background_merger->commit();
46
47       Commit any changes made to the index.  Until this is called, none of
48       the changes made during an indexing session are permanent.
49
50       Calls prepare_commit() implicitly if it has not already been called.
51
52   prepare_commit
53           $background_merger->prepare_commit();
54
55       Perform the expensive setup for commit() in advance, so that commit()
56       completes quickly.
57
58       Towards the end of prepare_commit(), the BackgroundMerger attempts to
59       re-acquire the write lock, which is then held until commit() finishes
60       and releases it.
61

INHERITANCE

63       Lucy::Index::BackgroundMerger isa Clownfish::Obj.
64
65
66
67perl v5.32.1                      2021-01-27  Lucy::Index::BackgroundMerger(3)
Impressum