saygoodbyye opened a new issue, #1439:
URL: https://github.com/apache/age/issues/1439
**Describe the bug**
Regression test "expr" fails in rare cases
**How are you accessing AGE (Command line, driver, etc.)?**
Accessing AGE through command line.
**What data setup do we need to do?**
Apache AGE (master branch) with PostgreSQL (REL_15_STABLE).
**What is the necessary configuration info needed?**
./configure CFLAGS=" -Og" --enable-tap-tests --enable-debug --enable-cassert
--prefix=/tmp/pgsql
**What is the command that caused the error?**
I removed all tests except "expr" from the Makefile and put "make
installcheck" in a loop to reproduce the error.
```
diff --git a/Makefile b/Makefile
index ab98665..2f08858 100644
--- a/Makefile
+++ b/Makefile
@@ -76,30 +76,8 @@ EXTENSION = age
DATA = age--1.4.0.sql
# sorted in dependency order
-REGRESS = scan \
- graphid \
- agtype \
- catalog \
- cypher \
- expr \
- cypher_create \
- cypher_match \
- cypher_unwind \
- cypher_set \
- cypher_remove \
- cypher_delete \
- cypher_with \
- cypher_vle \
- cypher_union \
- cypher_call \
- cypher_merge \
- age_global_graph \
- age_load \
- index \
- analyze \
- graph_generation \
- name_validation \
- drop
+
+REGRESS = expr
srcdir=`pwd`
```
Start tests:
```
for i in `seq 1000000`;do echo "iteration $i";NO_TEMP_INSTALL=1 make -s
installcheck || break;done
```
The test may fail on a random iteration. I received failures at iteration
~600, at iteration ~3500, and during the last run the test failed at iteration
199 with following "regression.diffs":
```
iteration 199
+++ regress install-check in +++
============== creating temporary instance ==============
============== initializing database system ==============
============== starting postmaster ==============
running on port 61958 with PID 3302580
============== creating database "contrib_regression" ==============
CREATE DATABASE
ALTER DATABASE
ALTER DATABASE
ALTER DATABASE
ALTER DATABASE
ALTER DATABASE
ALTER DATABASE
============== installing age ==============
CREATE EXTENSION
============== running regression test queries ==============
test expr ... FAILED 643 ms
============== shutting down postmaster ==============
======================
1 of 1 tests failed.
======================
```
regression.diffs:
```
diff -U3 /home/test/work/subtree/age/regress/expected/expr.out
/home/test/work/subtree/age/regre>
--- /home/test/work/subtree/age/regress/expected/expr.out 2023-12-06
13:30:29.282207296 +0>
+++ /home/test/work/subtree/age/regress/results/expr.out 2023-12-06
13:42:58.481465465 +0>
@@ -7217,12 +7217,12 @@
SELECT * FROM cypher('keys', $$MATCH ()-[e]-() RETURN keys(e)$$) AS
(edge_keys agtype);
edge_keys
-----------
- []
- []
["song"]
["song"]
["song"]
["song"]
+ []
+ []
(6 rows)
SELECT * FROM cypher('keys', $$RETURN keys({a:1,b:'two',c:[1,2,3]})$$) AS
(keys agtype);
```
But in some cases the test may fail with another regression.diffs:
```
diff -U3 /opt/pgpro/ent-14/src/apache-age-test/./regress/expected/expr.out
/opt/pgpro/ent-14/src/apache-age-test/./regress/results/expr.out
--- /opt/pgpro/ent-14/src/apache-age-test/./regress/expected/expr.out
2023-09-26 17:35:01.000000000 +0300
+++ /opt/pgpro/ent-14/src/apache-age-test/./regress/results/expr.out
2023-11-30 06:00:38.531000000 +0300
@@ -6612,6 +6612,7 @@
ERROR: keys() argument must be a vertex, edge, object or null
SELECT * from cypher('keys', $$MATCH u=()-[]-() RETURN keys(u)$$) as (keys
agtype);
ERROR: keys() argument must be a vertex, edge, object or null
+CONTEXT: parallel worker
SELECT create_graph('list');
NOTICE: graph "list" has been created
create_graph
```
**Expected behavior**
Consistent test passing
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