Julian Hyde created CALCITE-6602:
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Summary: Deadlock while loading class SqlTypeFixture
Key: CALCITE-6602
URL: https://issues.apache.org/jira/browse/CALCITE-6602
Project: Calcite
Issue Type: Bug
Affects Versions: 1.37.0
Reporter: Julian Hyde
I am seeing deadlocks during initialization of {{interface RelDataTypeSystem}}
and {{class RelDataTypeSystemImpl}}. The command {{./gradlew :core:test --tests
RelDataTypeSystemTest}} hangs about 90% of the time for me. Here's part of the
thread dump running under JDK 21.
{noformat}
"ForkJoinPool-1-worker-7" #30 [1161671] daemon prio=5 os_prio=0 cpu=8.26ms
elapsed=19.26s tid=0x00007d08b0000ff0 nid=1161671 waiting on condition
[0x00007d098b3fd000]
java.lang.Thread.State: RUNNABLE
at
org.apache.calcite.sql.type.SqlTypeFixture.<init>(SqlTypeFixture.java:28)
- waiting on the Class initialization monitor for
org.apache.calcite.rel.type.RelDataTypeSystem
at
org.apache.calcite.sql.type.RelDataTypeSystemTest$Fixture.<init>(RelDataTypeSystemTest.java:143)
at
org.apache.calcite.sql.type.RelDataTypeSystemTest.testCustomDecimalModReturnTypeInference(RelDataTypeSystemTest.java:310)
at
java.lang.invoke.LambdaForm$DMH/0x00007d0934160400.invokeVirtual(java.base@21/LambdaForm$DMH)
...
at
java.util.concurrent.ForkJoinWorkerThread.run(java.base@21/ForkJoinWorkerThread.java:188)
"ForkJoinPool-1-worker-8" #31 [1161672] daemon prio=5 os_prio=0 cpu=7.33ms
elapsed=19.26s tid=0x00007d08a8000ff0 nid=1161672 waiting on condition
[0x00007d098b2fc000]
java.lang.Thread.State: RUNNABLE
at
org.apache.calcite.rel.type.RelDataTypeSystem.<clinit>(RelDataTypeSystem.java:38)
- waiting on the Class initialization monitor for
org.apache.calcite.rel.type.RelDataTypeSystemImpl
at
org.apache.calcite.sql.type.SqlTypeFixture.<init>(SqlTypeFixture.java:28)
at
org.apache.calcite.sql.type.RelDataTypeSystemTest$Fixture.<init>(RelDataTypeSystemTest.java:143)
at
org.apache.calcite.sql.type.RelDataTypeSystemTest.testDecimalModReturnTypeInference(RelDataTypeSystemTest.java:229)
... {noformat}
Occurs in current main (commit
[a8802c7|https://github.com/apache/calcite/commit/a8802c721a2805159d166e45044c00364d1cb6c3]).
Not a high priority. Just documenting that this bug exists. Hopefully it only
exists when running tests.
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