ul>
<h2>        Improvement
</h2>
<ul>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-16753'>FLINK-16753</a>] -         Exception from AsyncCheckpointRunnable should be wrapped in CheckpointException
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-18139'>FLINK-18139</a>] -         Unaligned checkpoints checks wrong channels for inflight data.
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-18500'>FLINK-18500</a>] -         Make the legacy planner exception more cle