History fetched ahead into the corpus (bulk HDD) is ~60 TB raw for the
1,180B missing articles, and the indexer keeps only ~38% of headers.
With CORPUS_FILTER (default on), Corpus.write leaves out the lines the
edge worker drops on their own, decided per line as RangeIndexer.line
does: a crosspost another indexed group owns, and a subject that names no
file part (~48% of the indexed ranges' headers). Release-level rules
(garbage, per-article, executable, poster) judge files across chunks and
aren't applied. The chunk is compressed again as zlib (the worker takes
it as before); beside it a .drops (gzip JSON) keeps the rule version,
the owners' priorities and per rule the article numbers (as differences,
crossposts by owner), and range.json says filtered. A test shows the
worker makes the same releases, candidates and fragments of a filtered
chunk. corpus:filter filters chunks stored raw (planned capture ranges;
--all for every range).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The spool only fetches what workers lease soon, in priority order, and the
tail never ends: after a reset the 1,400 capture ranges waited behind it
while 34 of 40 connections idled. Up to CORPUS_AHEAD (8) planned capture
ranges whose chunks aren't all stored are now targets after everything else,
fetched into the corpus only (no spool); a later lease reads them from disk.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Ranges marked `capture` keep their XOVER chunks in CORPUS_DIR
(corpus/<group>/<start>-<end>/, edge-bench's layout, range.json once
complete; only chunks that inflate). The prefetcher reads a stored chunk
instead of fetching it, so a reset re-indexes them without the news
server; a chunk a worker reports corrupt goes from the corpus too.
edge-bench gets --releases (release chunks without payload, with their
first subjects) and ships in the edge image; deploy/corpus_sweep.py marks
more ranges (capture), replays the corpus with the deployed build (replay)
and reports suspects and the change since the previous build (report).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>