public-inbox-extindex - Man Page

public-inbox-extindex [Options] EXTINDEX_DIR INBOX_DIR...

public-inbox-extindex [Options] [EXTINDEX_DIR] --all

public-inbox-extindex creates and updates an external search and overview database used by the read-only public-inbox PSGI (HTTP), NNTP, and IMAP interfaces.  This requires either the Search::Xapian XS bindings OR the Xapian SWIG bindings, along with DBD::SQLite and DBI Perl modules.

-j JOBS

--jobs=JOBS

--no-fsync

--dangerous

--rethread

--max-size SIZE

--batch-size SIZE

These switches behave as they do for public-inbox-index(1)

--all

Index all publicinbox entries in PI_CONFIG.

publicinbox entries indexed by public-inbox-extindex can have full Xapian searching abilities with the per-publicinbox indexlevel set to basic and their respective Xapian (xap15 or xapian15) directories removed.  For multiple public-inboxes where cross-posting is common, this allows significant space savings on Xapian indices.

--gc

Perform garbage collection instead of indexing.  Use this if inboxes are removed from the extindex, or if messages are purged or removed from some inboxes.

--reindex

Forces a re-index of all messages in the extindex.  This can be used for in-place upgrades and bugfixes while read-only server processes are utilizing the index.  Keep in mind this roughly doubles the size of the already-large Xapian database.

The extindex locks will be released roughly every 10s to allow public-inbox-mda(1) and public-inbox-watch(1) processes to write to the extindex.

--fast

Used with --reindex, it will only look for new and stale entries and not touch already-indexed messages.

public-inbox-extindex-format(5)

public-inbox-extindex does not write to the public-inbox-config(5) file, it must be entered manually. The extindex name of all is a special case which corresponds to indexing --all inboxes.  An example for --all is as follows:

        [extindex "all"]
                topdir = /path/to/extindex_dir
                url = all
                coderepo = foo
                coderepo = bar

Putting an extindex entry in the config allows PublicInbox::WWW. You can have any number of extentry.$NAME sections where $NAME is something other than all to display a union of several inboxes.

See public-inbox-config(5) for more details.

PI_CONFIG

Used to override the default "~/.public-inbox/config" value.

XAPIAN_FLUSH_THRESHOLD

The number of documents to update before committing changes to disk.  This environment is handled directly by Xapian, refer to Xapian API documentation for more details.

Setting XAPIAN_FLUSH_THRESHOLD or publicinbox.indexBatchSize for a large --reindex may cause public-inbox-mda(1), public-inbox-learn(1) and public-inbox-watch(1) tasks to wait long and unpredictable periods of time during --reindex.

Default: none, uses publicinbox.indexBatchSize

Occasionally, public-inbox will update it's schema version and require a full index by running this command.

Feedback welcome via plain-text mail to <mailto:meta@public-inbox.org>

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License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>

Search::Xapian, DBD::SQLite

lei(1), lei-add-external(1), lei-overview(7), lei-reindex(1), public-inbox-config(5), public-inbox-tuning(7).