[jira] [Created] (FLINK-11968) Fix runtime SingleElementIterator.iterator and remove table.SingleElementIterator

[Shang Yuanchun (Jira)]

Jingsong Lee created FLINK-11968:
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             Summary: Fix runtime SingleElementIterator.iterator and remove table.SingleElementIterator
                 Key: FLINK-11968
                 URL: https://issues.apache.org/jira/browse/FLINK-11968
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Operators
            Reporter: Jingsong Lee


{code:java}
@Override
public Iterator<E> iterator() {
   return this;
}
{code}
In iterator we need set available to true otherwise we can only iterator once.



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