Sergey Nuyanzin created CALCITE-2512:
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Summary: StreamTest#testStreamCancel fails in a flaky way
Key: CALCITE-2512
URL: https://issues.apache.org/jira/browse/CALCITE-2512
Project: Calcite
Issue Type: Bug
Reporter: Sergey Nuyanzin
Assignee: Julian Hyde
It fails only once while local build {{mvn clean install}}
the trace is below
it leads to the code
{code}
public static final Function0<Object[]> ROW_GENERATOR =
new Function0<Object[]>() {
private int counter = 0;
private Iterator<String> items =
Iterables.cycle("paint", "paper", "brush").iterator();
@Override public Object[] apply() {
return new Object[]{System.currentTimeMillis(), counter++,
items.next(), 10};
}
};
{code}
Unfortunately could not reproduce it again. The only thing that I have in mind:
could it happen that items was not initialized before {{items.next()}} call in
{{apply()}}. May be it makes sense to have {{items}} as {{final}}
{noformat}
[INFO] Tests run: 16, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 21.694
s - in org.apache.calcite.test.CoreQuidemTest
[INFO] Running org.apache.calcite.test.StreamTest
java.util.NoSuchElementException
at java.util.ArrayList$Itr.next(ArrayList.java:862)
at com.google.common.collect.Iterators$4.next(Iterators.java:422)
at org.apache.calcite.test.StreamTest$1.apply(StreamTest.java:460)
at org.apache.calcite.test.StreamTest$1.apply(StreamTest.java:454)
at
org.apache.calcite.test.StreamTest$InfiniteOrdersTable$1.next(StreamTest.java:476)
at
org.apache.calcite.test.StreamTest$InfiniteOrdersTable$1.next(StreamTest.java:470)
at
org.apache.calcite.linq4j.Linq4j$IterableEnumerator.moveNext(Linq4j.java:463)
at
org.apache.calcite.linq4j.EnumerableDefaults$11$1.moveNext(EnumerableDefaults.java:1875)
at
org.apache.calcite.linq4j.EnumerableDefaults$11$1.moveNext(EnumerableDefaults.java:1875)
at
org.apache.calcite.linq4j.TransformedEnumerator.moveNext(TransformedEnumerator.java:35)
at
org.apache.calcite.linq4j.Linq4j$EnumeratorIterator.next(Linq4j.java:685)
at
org.apache.calcite.avatica.util.IteratorCursor.next(IteratorCursor.java:46)
at
org.apache.calcite.avatica.AvaticaResultSet.next(AvaticaResultSet.java:217)
at
org.apache.calcite.test.StreamTest.lambda$testStreamCancel$1(StreamTest.java:251)
at
org.apache.calcite.test.CalciteAssert.assertQuery(CalciteAssert.java:552)
at
org.apache.calcite.test.CalciteAssert$AssertQuery.returns(CalciteAssert.java:1328)
at
org.apache.calcite.test.CalciteAssert$AssertQuery.returns(CalciteAssert.java:1305)
at
org.apache.calcite.test.StreamTest.testStreamCancel(StreamTest.java:248)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at
org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:298)
at
org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:292)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.lang.Thread.run(Thread.java:748)
[ERROR] Tests run: 9, Failures: 0, Errors: 1, Skipped: 2, Time elapsed: 0.33 s
<<< FAILURE! - in org.apache.calcite.test.StreamTest
[ERROR] testStreamCancel(org.apache.calcite.test.StreamTest) Time elapsed:
0.14 s <<< ERROR!
java.lang.RuntimeException: exception while executing [select stream * from
orders]
at
org.apache.calcite.test.StreamTest.testStreamCancel(StreamTest.java:248)
Caused by: java.util.NoSuchElementException
at
org.apache.calcite.test.StreamTest.lambda$testStreamCancel$1(StreamTest.java:251)
at
org.apache.calcite.test.StreamTest.testStreamCancel(StreamTest.java:248)
{noformat}
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