ConcurrentModificationException thrown when using SAS tokens

[PhillHenry]

Apache Iceberg version

1.9.2

Query engine

Spark

Please describe the bug 🐞

I'm getting ConcurrentModificationExceptions here when this is called by Azure code by multiple threads as they close their ADLSOutputStream.

When I made access to the map synchronized, the problem was solved.

Willingness to contribute

• I can contribute a fix for this bug independently
• I would be willing to contribute a fix for this bug with guidance from the Iceberg community
• I cannot contribute a fix for this bug at this time

[PhillHenry]

Ah, looks like this was fixed in #13730 but is not in the 1.9.2 cut of the code.