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[8.2] [MOD-12640] Handle warnings in empty FT.AGGREGATE replies (cluster) (#7855)#7873

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meiravgri merged 3 commits into8.2from
backport-7855-to-8.2
Dec 24, 2025
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[8.2] [MOD-12640] Handle warnings in empty FT.AGGREGATE replies (cluster) (#7855)#7873
meiravgri merged 3 commits into8.2from
backport-7855-to-8.2

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@meiravgri meiravgri commented Dec 24, 2025

backport #7855 to 8.2


Note

Ensures coordinator handles warnings from empty shard replies in cluster mode, avoiding hangs and correctly surfacing timeouts and other warnings.

  • Add processWarningsAndCleanup() in rpnet.c to read RESP3 warning from meta on empty replies, set appropriate flags (timeout, max prefix expansions, indexing OOM), free reply, and return RS_RESULT_TIMEDOUT when applicable
  • Invoke warning processing when an empty reply arrives and when finishing a shard batch, so coordinator propagates timeouts/warnings in RESP3
  • In aggregate_debug.c, only force a coordinator timeout for TIMEOUT_AFTER_N 0 INTERNAL_ONLY when using RESP2; RESP3 now relies on propagated shard warnings; update header docs to clarify RESP3 vs RESP2 behavior
  • Add tests: RESP3 propagation for FT.AGGREGATE and FT.PROFILE, max prefix expansions warning, RESP2 forced-timeout path, and indexing OOM warning

Written by Cursor Bugbot for commit 0e49d22. This will update automatically on new commits. Configure here.

…7855)

* introduce setWarnings

use at the end of the reply
or when empty reply is recieved

* fixes

* cleanups

fix test

* fix force timeout in debug

* add tests:
testEmptyReplyTimeoutWarningAggregate get stuck if we remove enforcing coord timeout

testEmptyReplyTimeoutWarningProfileAggregate
we dont get warning

* more tests

* move to file

* fix type

* remove comment

* rename test file

* add testEmptyReplyQueryOomWarning
address todos

* trmobr skip duplication

* check waning exact

(cherry picked from commit 701f719)
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codecov bot commented Dec 24, 2025

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.57%. Comparing base (2813e94) to head (0e49d22).
⚠️ Report is 2 commits behind head on 8.2.

Additional details and impacted files
@@            Coverage Diff             @@
##              8.2    #7873      +/-   ##
==========================================
- Coverage   89.61%   89.57%   -0.05%     
==========================================
  Files         256      256              
  Lines       41705    41711       +6     
  Branches     3719     3719              
==========================================
- Hits        37376    37362      -14     
- Misses       4280     4300      +20     
  Partials       49       49              
Flag Coverage Δ
flow 82.36% <100.00%> (-0.17%) ⬇️
unit 47.26% <0.00%> (-0.01%) ⬇️

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@meiravgri meiravgri added this pull request to the merge queue Dec 24, 2025
@github-merge-queue github-merge-queue bot removed this pull request from the merge queue due to failed status checks Dec 24, 2025
@meiravgri meiravgri added this pull request to the merge queue Dec 24, 2025
Merged via the queue into 8.2 with commit 0af80ff Dec 24, 2025
32 checks passed
@meiravgri meiravgri deleted the backport-7855-to-8.2 branch December 24, 2025 11:22
alonre24 added a commit to alonre24/redis that referenced this pull request Jan 26, 2026
**Bug Fixes:**

* [redis#7219](RediSearch/RediSearch#7219) Fix a concurrency issue on Reducer in `FT.AGGREGATE`
* [redis#7255](RediSearch/RediSearch#7255) Fix `BM25STD` underflow wraparound
* [redis#7275](RediSearch/RediSearch#7275) Report used memory as `unsigned long long` to avoid underflows
* [redis#7264](RediSearch/RediSearch#7264) Fix `totalDocsLen` updates
* [redis#6995](RediSearch/RediSearch#6995) Do not fanout `FT.INFO` to replicas
* [redis#7350](RediSearch/RediSearch#7350) Fix `FT.CREATE` failure with LeanVec parameters on non-Intel architectures
* [redis#7384](RediSearch/RediSearch#7384) Fix index load from RDB temporary memory overhead
* [redis#7459](RediSearch/RediSearch#7459) Fix Fork GC potential double-free on error path
* [redis#7458](RediSearch/RediSearch#7458) Fix a GC performence regression
* [redis#7470](RediSearch/RediSearch#7470) Avoid draining worker thread pool from FLUSH callback to avoid deadlocks
* [redis#7554](RediSearch/RediSearch#7554) Handle the case where `SCORE` is sent alone without extra fields (coordinator)
* [redis#7685](RediSearch/RediSearch#7685) Fix cursor logical leak
* [redis#7794](RediSearch/RediSearch#7794) Fix `cmp_strings()` to correctly handle binary data with embedded NULLs in TOLIST reducer in FT.AGGREGATE
* [redis#7873](RediSearch/RediSearch#7873) Handle warnings in empty `FT.AGGREGATE` replies (cluster)
* [redis#7886](RediSearch/RediSearch#7886) Remove non-TEXT fields from the spec keys dictionary
* [redis#7904](RediSearch/RediSearch#7904) Refactor keys dictionary handling
* [redis#7901](RediSearch/RediSearch#7901) Support multiple warnings in reply
* [redis#8083](RediSearch/RediSearch#8083) Fix incorrect FULLTEXT field metric counts
* [redis#8153](RediSearch/RediSearch#8153) Fix configuration registration issues

**Improvements:**

* [redis#7154](RediSearch/RediSearch#7154) `FT.AGGREGATE` can return Background Indexing OOM warnings
* [redis#7083](RediSearch/RediSearch#7083) Add the default text scorer as a configuration option
* [redis#7341](RediSearch/RediSearch#7341) Rename `FT.PROFILE` counter fields
* [redis#7436](RediSearch/RediSearch#7436) Enhance `FT.PROFILE` with vector search execution details
* [redis#7435](RediSearch/RediSearch#7435) Ensure full `FT.PROFILE` output on timeout with RETURN policy
* [redis#7534](RediSearch/RediSearch#7534) Reduce the number of worker threads asynchronously to avoid deadlocks during queries
* [redis#7614](RediSearch/RediSearch#7614) Track timeout warnings and errors in INFO
* [redis#7646](RediSearch/RediSearch#7646) Track `maxprefixexpansions` warnings and errors in INFO
* [redis#7577](RediSearch/RediSearch#7577) Track query syntax/argument errors (basis for query error tracking)
* [redis#7737](RediSearch/RediSearch#7737) Add `Internal cursor reads` metric to cluster `FT.PROFILE` output
* [redis#7759](RediSearch/RediSearch#7759) Extend indexing metrics
* [redis#7710](RediSearch/RediSearch#7710) Support `WITHCOUNT` keyword in `FT.AGGREGATE`
* [redis#7957](RediSearch/RediSearch#7957) Persist query warnings across cursor reads
* [redis#8054](RediSearch/RediSearch#8054) Add logging for index-related commands
* [redis#8151](RediSearch/RediSearch#8151) Fix shard total profile time reporting in `FT.PROFILE`
* [redis#8103](RediSearch/RediSearch#8103) Output current thread IndexSpec information on crash
YaacovHazan pushed a commit to redis/redis that referenced this pull request Jan 26, 2026
**Bug Fixes:**

* [#7219](RediSearch/RediSearch#7219) Fix a
concurrency issue on Reducer in `FT.AGGREGATE`
* [#7255](RediSearch/RediSearch#7255) Fix
`BM25STD` underflow wraparound
* [#7275](RediSearch/RediSearch#7275) Report
used memory as `unsigned long long` to avoid underflows
* [#7264](RediSearch/RediSearch#7264) Fix
`totalDocsLen` updates
* [#6995](RediSearch/RediSearch#6995) Do not
fanout `FT.INFO` to replicas
* [#7350](RediSearch/RediSearch#7350) Fix
`FT.CREATE` failure with LeanVec parameters on non-Intel architectures
* [#7694](RediSearch/RediSearch#7694) Use
asynchronous jobs for GC in SVS to accelerate execution
* [#7384](RediSearch/RediSearch#7384) Fix index
load from RDB temporary memory overhead
* [#7459](RediSearch/RediSearch#7459) Fix Fork
GC potential double-free on error path
* [#7458](RediSearch/RediSearch#7458) Fix a GC
performence regression
* [#7470](RediSearch/RediSearch#7470) Avoid
draining worker thread pool from FLUSH callback to avoid deadlocks
* [#7554](RediSearch/RediSearch#7554) Handle the
case where `SCORE` is sent alone without extra fields (coordinator)
* [#7685](RediSearch/RediSearch#7685) Fix cursor
logical leak
* [#7794](RediSearch/RediSearch#7794) Fix
`cmp_strings()` to correctly handle binary data with embedded NULLs in
TOLIST reducer in FT.AGGREGATE
* [#7873](RediSearch/RediSearch#7873) Handle
warnings in empty `FT.AGGREGATE` replies (cluster)
* [#7886](RediSearch/RediSearch#7886) Remove
non-TEXT fields from the spec keys dictionary
* [#7904](RediSearch/RediSearch#7904) Refactor
keys dictionary handling
* [#7901](RediSearch/RediSearch#7901) Support
multiple warnings in reply
* [#8083](RediSearch/RediSearch#8083) Fix
incorrect FULLTEXT field metric counts
* [#8153](RediSearch/RediSearch#8153) Fix
configuration registration issues

**Improvements:**

* [#7154](RediSearch/RediSearch#7154)
`FT.AGGREGATE` can return Background Indexing OOM warnings
* [#7083](RediSearch/RediSearch#7083) Add the
default text scorer as a configuration option
* [#7341](RediSearch/RediSearch#7341) Rename
`FT.PROFILE` counter fields
* [#7436](RediSearch/RediSearch#7436) Enhance
`FT.PROFILE` with vector search execution details
* [#7435](RediSearch/RediSearch#7435) Ensure
full `FT.PROFILE` output on timeout with RETURN policy
* [#7534](RediSearch/RediSearch#7534) Reduce the
number of worker threads asynchronously to avoid deadlocks during
queries
* [#7614](RediSearch/RediSearch#7614) Track
timeout warnings and errors in INFO
* [#7646](RediSearch/RediSearch#7646) Track
`maxprefixexpansions` warnings and errors in INFO
* [#7577](RediSearch/RediSearch#7577) Track
query syntax/argument errors (basis for query error tracking)
* [#7737](RediSearch/RediSearch#7737) Add
`Internal cursor reads` metric to cluster `FT.PROFILE` output
* [#7759](RediSearch/RediSearch#7759) Extend
indexing metrics
* [#7710](RediSearch/RediSearch#7710) Support
`WITHCOUNT` keyword in `FT.AGGREGATE`
* [#7957](RediSearch/RediSearch#7957) Persist
query warnings across cursor reads
* [#8054](RediSearch/RediSearch#8054) Add
logging for index-related commands
* [#8151](RediSearch/RediSearch#8151) Fix shard
total profile time reporting in `FT.PROFILE`
* [#8103](RediSearch/RediSearch#8103) Output
current thread IndexSpec information on crash
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