Concurrent appends during index join fail

[taniabogatsch]

What happens?

The following test fails in the CI on relassert.

To Reproduce

Still working on that. Seems to run locally. It might be related to fuzzer issues 41 and 44 still failing (#5984, #6168).

OS:

Ubuntu 20.04.5

DuckDB Version:

master branch

DuckDB Client:

testrunner

Full Name:

Tania Bogatsch

Affiliation:

DuckDB Labs

Have you tried this on the latest master branch?

• I agree

Have you tried the steps to reproduce? Do they include all relevant data and configuration? Does the issue you report still appear there?

• I agree

[Mytherin]

On a related note, the Concurrent reads during index creation test occassionally segfaults as well:

until [[ $? != 0 ]]; do build/release/test/unittest "Concurrent reads during index creation"; done

< many successes>
...
[0/1] (0%): Concurrent reads during index creation                              
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
unittest is a Catch v2.13.7 host application.
Run with -? for options

-------------------------------------------------------------------------------
Concurrent reads during index creation
-------------------------------------------------------------------------------
/Users/myth/Programs/duckdb-bugfix/test/sql/parallelism/interquery/test_concurrent_index.cpp:29
...............................................................................

/Users/myth/Programs/duckdb-bugfix/test/sql/parallelism/interquery/test_concurrent_index.cpp:29: FAILED:
  {Unknown expression after the reported line}
due to a fatal error condition:
  SIGSEGV - Segmentation violation signal

===============================================================================
test cases: 1 | 1 failed
assertions: 2 | 1 passed | 1 failed

Perhaps investigate these issues with the thread sanitizer when you have time.