arthur-valadares-psiquantum opened a new issue, #2245:
URL: https://github.com/apache/age/issues/2245
**Describe the bug**
For some strange reason, at exactly 42 vertex labels the drop_graph starts
failing with "label (relation) cache corrupted". Note that the graph still
happens, but the connection is returned broken and requires reconnection.
To reproduce you can run the query below that creates 44 vertexes. To see it
not fail, remove around 6 and it should not fail on drop_graph
**How are you accessing AGE (Command line, driver, etc.)?**
- DBeaver (JDBC), sqlalchemy
**What data setup do we need to do?**
```pgsql
...
select * from ag_catalog.create_graph('test_labels_direct');
SELECT * from cypher('test_labels_direct', $$
CREATE (a1:Part1 {part_num: '123'}),
(a2:Part2 {part_num: '345'}),
(a3:Part3 {part_num: '456'}),
(a4:Part4 {part_num: '789'}),
(a5:Part5 {part_num: '123'}),
(a6:Part6 {part_num: '345'}),
(a7:Part7 {part_num: '456'}),
(a8:Part8 {part_num: '789'}),
(a9:Part9 {part_num: '123'}),
(a10:Part10 {part_num: '345'}),
(a11:Part11 {part_num: '456'}),
(a12:Part12 {part_num: '789'}),
(a13:Part13 {part_num: '123'}),
(a14:Part14 {part_num: '345'}),
(a15:Part15 {part_num: '456'}),
(a16:Part16 {part_num: '789'}),
(a17:Part17 {part_num: '123'}),
(a18:Part18 {part_num: '345'}),
(a19:Part19 {part_num: '456'}),
(a20:Part20 {part_num: '789'}),
(a21:Part21 {part_num: '123'}),
(a22:Part22 {part_num: '345'}),
(a23:Part23 {part_num: '456'}),
(a24:Part24 {part_num: '789'}),
(a25:Part25 {part_num: '123'}),
(a26:Part26 {part_num: '345'}),
(a27:Part27 {part_num: '456'}),
(a28:Part28 {part_num: '789'}),
(a29:Part29 {part_num: '789'}),
(a30:Part30 {part_num: '123'}),
(a31:Part31 {part_num: '345'}),
(a32:Part32 {part_num: '456'}),
(a33:Part33 {part_num: '789'}),
(a34:Part34 {part_num: '123'}),
(a35:Part35 {part_num: '345'}),
(a36:Part36 {part_num: '456'}),
(a37:Part37 {part_num: '789'}),
(a38:Part38 {part_num: '123'}),
(a39:Part39 {part_num: '345'}),
(a40:Part40 {part_num: '456'}),
(a41:Part41 {part_num: '789'}),
(a42:Part42 {part_num: '345'}),
(a43:Part43 {part_num: '456'}),
(a44:Part44 {part_num: '789'})
$$) as (a agtype);
...
```
**What is the necessary configuration info needed?**
- None
**What is the command that caused the error?**
```pgsql
select * from ag_catalog.drop_graph('test_labels_direct', true);
```
```
2025-11-14 01:50:57.946 UTC [472] ERROR: label (relation) cache corrupted
2025-11-14T01:50:57.946816366Z 2025-11-14 01:50:57.946 UTC [472] FATAL:
terminating connection because protocol synchronization was lost
```
**Expected behavior**
Graph should drop with no errors and not break the connection.
**Environment (please complete the following information):**
- Version: Docker image apache/age:dev_snapshot_PG17
**Additional context**
Add any other context about the problem here.
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