logan
7e0be8fa30
`maintain-index` failed with
indexexport: copy rows: SQL logic error: no such column: total_tracks
three minutes into the one job that owns the ~205 GB checkpoint and
publishes the catalog every user downloads.
The cause is the exception that keeps that checkpoint alive. The job's
/cache is a real YJ_HOME that survives between runs, so its
explore_index is classified Cache and is deliberately *not* dropped and
recreated by cmd/indexbuild's schema repair -- which means a column
added to the schema afterwards is absent from it. total_tracks arrived
with the album-completeness work; the exporter selected it regardless.
The fix is the rule the importing side already follows.
artifactHasTotals exists because "adding a column to the importer's
SELECT is how you break every artifact already published"; the mirror
image, reading an index older than the binary, had no such guard.
sourceColumns asks pragma_table_info and selects a literal 0 when the
column is absent -- which is what that column already means by "the
catalog does not say", and what the app renders as unknown rather than
as incomplete. The artifact keeps every column, so an importer needs no
second shape.
The test reproduces the failure symptom first: with the fix removed it
fails with the CI message verbatim. Its own first version proved
nothing, though, and that is worth the comment it now carries --
`strings.Replace(catalogColumns, "total_tracks, ", …)` matches nothing,
because the list is formatted across lines and the name is followed by
a newline, so the "old" index was built with every current column.