QuakeWang opened a new pull request, #8855:
URL: https://github.com/apache/paimon/pull/8855
### Purpose
`ParallelExecution` marks tasks complete before closing the underlying
readers, while `close()` previously only interrupted the executor. As a result,
`close()` could return while reader cleanup was still running, leaving input
streams temporarily
open.
Wait for executor termination in `close()` so reader resources are released
before it returns. Add deterministic coverage for the race and remove the sleep
workaround from `IndexBootstrapTest`.
### Tests
- `mvn -pl paimon-core -am -DfailIfNoTests=false -DwildcardSuites=none
-Dtest=ParallelExecutionTest,IndexBootstrapTest test`
- Ran `testBootstrapIgnoresQueryAuth` 1,000 times concurrently on JDK 11
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