Aklakan commented on issue #2076:
URL: https://github.com/apache/jena/issues/2076#issuecomment-1794791236
> This could be quite sensitive to the environment
It is at least sensitive to the exact state of `HashCommon.keys` and this
depends on the hash codes which might differ between JVMs. As mentioned, the
provided dataset `graph-mem-broken-iterator-delete-01.ttl` is an ordered dump
of that data structure from my debugger (hence the comments with `null`).
```
java -version
openjdk version "17.0.8.1" 2023-08-24
# Java running on Ubuntu 22.04 and installed using
sudo apt install openjdk-17-jdk
```
> Does it need to involve the async parser or does
RDFParser.source("").parse(graph) also exhibit the problem?
No, it also happens with `RDFDataMgr.read(graph,
"graph-mem-broken-iterator-delete-01.ttl");`
The AsyncParser code was just a leftover from my experiments.
The important part is that the triples are added to the graph in order -
swapping two random triples will cause the test to succeed.
> Not all implementations can provide remove()
Yes, I see that it can get very difficult to implement that correctly and
efficiently.
> Would it be possible to run this in some earlier versions?
Will try and report back
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