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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2020/04/20 10:29:33 UTC

[GitHub] [flink] wangyang0918 opened a new pull request #11820: [FLINK-17264][scripts] Fix broken taskmanager.sh by trimming space of wc command output

wangyang0918 opened a new pull request #11820:
URL: https://github.com/apache/flink/pull/11820

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## What is the purpose of the change

Start a taskmanager on Mac via taskmanager.sh will get the following error.

```
wangyang-pc:build-target danrtsey.wy$ ./bin/taskmanager.sh start-foreground [ERROR] Unexpected result ( 1 lines): BASH_JAVA_UTILS_EXEC_RESULT:-Xmx536870902 -Xms536870902 -XX:MaxDirectMemorySize=268435458 -XX:MaxMetaspaceSize=268435456 [ERROR] extractExecutionParams only accepts exactly one line as the input [ERROR] Could not get JVM parameters properly.
```

The root cause is FLINK-17023 introduce the following change and it could not work as expected.

```
local num_lines=$(echo "$execution_config" | wc -l)
```
On linux environment, the output is "1". However, on Mac, it is " 1". Maybe we need to add `tr -d '[:space:]'` after `wc`.

## Brief change log

* Add `tr -d '[:space:]'`

## Verifying this change

* Manually test on Mac
* Covered by existing test on linux

## Does this pull request potentially affect one of the following parts:

- Dependencies (does it add or upgrade a dependency): (yes / **no**)
- The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**)
- The serializers: (yes / **no** / don't know)
- The runtime per-record code paths (performance sensitive): (yes / **no** / don't know)
- Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: (yes / **no** / don't know)
- The S3 file system connector: (yes / **no** / don't know)

## Documentation

- Does this pull request introduce a new feature? (yes / **no**)
- If yes, how is the feature documented? (**not applicable** / docs / JavaDocs / not documented)

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