Docker-maven-plugin: Connection is still allocated error on Windows

[Madanor]

Description

d-m-p 0.28.0 is not working on Windows, e.g. mvn docker:build
Error: Connection is still allocated
0.28.0 works fine on Linux. Old version 0.27.2 works on Windows.
The issue is reproducible with d-m-p version switching back and forth, restarting, colleagues machine.
I found this issue from f-m-p, which looks related: https://github.com/fabric8io/fabric8-maven-plugin/issues/1468

> mvn docker:build
[INFO] Scanning for projects...
... download artifacts ...
[INFO]
[INFO] --------------------------< com.example:test >--------------------------
[INFO] Building test 1.0-SNAPSHOT
[INFO] ----------------------------[ docker-build ]----------------------------
[INFO]
[INFO] --- docker-maven-plugin:0.28.0:build (default-cli) @ test ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.089 s
[INFO] Finished at: 2019-01-17T14:55:35+01:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal io.fabric8:docker-maven-plugin:0.28.0:build (default-cli) on project test: Execution default-cli of goal io.fabric8:docker-maven-plugin:0.28.0:build failed: Connection is still allocated -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException

Info

• d-m-p version : 0.28.0
• Maven version (mvn -v) : 3.5.4 or 3.6.0
• Windows version : 10.0.14393 Build 14393
• Docker version : Docker Desktop 2.0.0.2 (30215)
• How to reproduce : windows-0.28.0.zip

[JoepWeijers]

Running into exactly the same issue. Reverting to 0.27.2 as a workaround for now.

• Windows 10 version 1803, build 17134.523
• mvn 3.5.2
• Docker Desktop 2.0.0.2 (30215) = Docker Engine 18.09.1

[a-a-davydov]

I have same problem:

d-m-p version : 0.28.0
Maven version (mvn -v) : 3.3.9 (Netbeans 9.0)
java version "1.8.0_181"
Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)
Windows 10 pro

Docker version : Docker desctop community Version 2.0.0.2 (30215) Channel: stable Build: 0b030e1

[pontello]

Same problem here, also downgraded to 0.27.2.

[brandonheck]

👍 Seeing the same here, downgrade to 0.27.2 works.

[reneploetz]

Looking at the source code and the changes between 0.27.2 and 0.28, this is might be a connection leak in DockerAccessWithHcClient.fetchApiVersionFromServer as the CloseableHttpResponse is never closed.

[LorenzoBettini]

Thanks! When will this fixed version be released?

[rohanKanojia]

@LorenzoBettini : Umm, I think it would be available in 2-3 weeks. Roland manages the release process; if he is too busy, maybe it can be delayed by 1-2 weeks.

[rhuss]

I'm going to make a release this weekend. Sorry for any inconvenience and the long delay.

[Madanor]

Thank you.

[meier297]

Thanks. But latest version 4.1.0 on https://mvnrepository.com/artifact/io.fabric8/fabric8-maven-plugin uses still docker-maven-plugin 0.28.0. When a new release will be available?

[rodrigorodrigues]

@meier297 had same issue with 0.28.0 but I updated for latest version 0.30.0 and worked fine