Sergey Nuyanzin created CALCITE-2512: ----------------------------------------
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} -- This message was sent by Atlassian JIRA (v7.6.3#76005)