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docs: time-based replica progress reporting; deltas_batch_progress_size is a no-op - #1728

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docs: time-based replica progress reporting; deltas_batch_progress_size is a no-op#1728
as51340 wants to merge 1 commit into
release/3.13from
fix/repl-timeout

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@as51340

@as51340 as51340 commented Aug 14, 2026

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Release note

Document new async replica progress heartbeat mechanism.

Related product PRs

PRs from product repo this doc page is related to:
memgraph/memgraph#4557

Checklist:

  • Add appropriate milestone (current release cycle)
  • Add bugfix or feature label, based on the product PR type you're documenting
  • Make sure all relevant tech details are documented
  • Check all content with Grammarly
  • Perform a self-review of my code
  • The build passes locally
  • My changes generate no new warnings or errors

…ze is a no-op

Replicas now report progress on a fixed time interval for as long as work
keeps advancing, instead of after a fixed number of processed deltas. This
covers long operations that run inside a single delta -- index population,
constraint validation, snapshot loading, storage clearing before a reset, and
aborting an interrupted two-phase commit -- which previously reported nothing
and let the main drop the connection mid-build.

As a consequence the deltas_batch_progress_size coordinator setting no longer
has any effect. It stays readable and settable so existing configurations
survive an upgrade.

Core PR: memgraph/memgraph#4557
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documentation Ready Ready Preview Aug 14, 2026 6:50am

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