GitHub user zentol opened a pull request:
https://github.com/apache/flink/pull/4788
[FLINK-7790] [REST] Unresolved query params not added to request URL
## What is the purpose of the change
This PR fixes a bug where unresolved optional parameters where still
included in the request URL by the RestClusterClient.
For example, imagine a request to list the current jobs, with an optional
query parameter "state" to select only running/completed jobs. If this
parameter was unresolved (aka no explicit value was set for it by the client),
this currently causes the request URL to look like this: "/jobs?state=null",
whereas it should be "/jobs",
This is caused by a faulty check in `MessageParameters#resolveUrl` that
constructs the request URL from a set of parameters. It did not properly verify
whether a query was resolved before adding it to the URL.
## Brief change log
* fix the bug
* add a test
## Verifying this change
This change added tests and can be verified as follows:
* run `MessageParametersTest#testUnresolvedParameters`
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zentol/flink 7790
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/4788.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 #4788
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commit d606aa8a4f5f60a03bda5a0f82cdbb4e5bea329f
Author: zentol <[email protected]>
Date: 2017-10-10T10:57:05Z
[FLINK-7790] [REST] Unresolved query params not added to request URL
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