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Posted to dev@flink.apache.org by "Chesnay Schepler (JIRA)" <ji...@apache.org> on 2018/08/28 11:55:00 UTC
[jira] [Created] (FLINK-10234) Lambda usage in FutureUtils is
ambigouos with Java 9
Chesnay Schepler created FLINK-10234:
----------------------------------------
Summary: Lambda usage in FutureUtils is ambigouos with Java 9
Key: FLINK-10234
URL: https://issues.apache.org/jira/browse/FLINK-10234
Project: Flink
Issue Type: Sub-task
Components: Core
Affects Versions: 1.7.0
Reporter: Chesnay Schepler
Assignee: Chesnay Schepler
Fix For: 1.7.0
In {{FutureUtils}} the following code doesn't compile with java 9:
{code}
... = scheduledExecutor.schedule(
() -> retryOperationWithDelay(resultFuture, operation, retries - 1, retryDelay,
...,
...,
...);
{code}
The reason is that the compiler cannot determine whether the lambda should be a {{Runnable}} or a {{Callable<V>}}, resulting in incompatible bounds for the return type.
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