GitHub user zhangminglei opened a pull request:
https://github.com/apache/flink/pull/5447
[FLINK-8423] OperatorChain#pushToOperator catch block may fail with NPE
## What is the purpose of the change
Fix the NPE when outputTag is null.
## Brief change log
Add when outputTag is not null, then do the catch block work.
## Verifying this change
This change is a trivial rework / code cleanup without any test coverage.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (no)
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: ( no)
- The serializers: (no)
- The runtime per-record code paths (performance sensitive): ( no)
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Yarn/Mesos, ZooKeeper: (no )
- The S3 file system connector: (no)
## Documentation
- Does this pull request introduce a new feature? (/ no)
- If yes, how is the feature documented? ( not documented)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zhangminglei/flink flink-8423
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/5447.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #5447
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commit 65ac580ca5a3b4c78c954ff08eef9bedcb1e9713
Author: zhangminglei <zml13856086071@...>
Date: 2018-02-10T02:32:43Z
[FLINK-8423] OperatorChain#pushToOperator catch block may fail with NPE
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