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Posted to dev@knox.apache.org by GitBox <gi...@apache.org> on 2021/07/28 13:18:25 UTC

[GitHub] [knox] zeroflag opened a new pull request #475: KNOX-2639. Build instability because maven artifact download failure

zeroflag opened a new pull request #475:
URL: https://github.com/apache/knox/pull/475


   ## What changes were proposed in this pull request?
   
   Trying to get rid of build instability errors like this:
   
   ```
   Error:  Failed to execute goal on project gateway-test-release: Could not resolve dependencies for project org.apache.knox:gateway-test-release:pom:1.6.0-SNAPSHOT: Failed to collect dependencies at org.eclipse.jetty:jetty-util-ajax:jar:9.4.34.v20201102: Failed to read artifact descriptor for org.eclipse.jetty:jetty-util-ajax:jar:9.4.34.v20201102: 
   Could not transfer artifact org.eclipse.jetty:jetty-util-ajax:pom:9.4.34.v20201102 from/to central (https://repo.maven.apache.org/maven2): transfer failed for https://repo.maven.apache.org/maven2/org/eclipse/jetty/jetty-util-ajax/9.4.34.v20201102/jetty-util-ajax-9.4.34.v20201102.pom: 
   Connection timed out (Read failed) -> [Help 1]
   ```
   
   There is a `maven.wagon.http.retryHandler.count` parameter but it doesn't do anything by default because ConnectException is not retryable by default, so I had to set maven.wagon.http.retryHandler.nonRetryableClasses as well.
   
   This way I can see the retry related messages in the mvn outout.
   
   Many sources recommened `-Dhttp.keepAlive=false` because keepAlive connections are prone to be killed within docker for some reason.
   
   ## How was this patch tested?
   
   1.) Enable maven wagon logging to see retries:
   
   ```
   org.slf4j.simpleLogger.log.org.apache.maven.wagon.providers.http.httpclient=on
   in
   ~/tools/apache-maven-3.8.1/conf/logging/simplelogger.properties
   ```
   
   2.) Simulate Connection Timeout by setting `10.255.255.1 repo.maven.apache.org` in `/etc/hosts`
   
   3.) Run maven command with retry and checked the output:
   ```
   mvn  -Dmaven.wagon.http.retryHandler.count=2 -Dmaven.wagon.http.retryHandler.class=default -Dmaven.wagon.http.retryHandler.nonRetryableClasses=java.io.InterruptedIOException   -DskipTests -Dcheckstyle.skip=true -Dfindbugs.skip=true -Dpmd.skip=true -Drat.skip -Ppackage clean install
   ```
   
   Output:
   
   ```
   Downloading from central: https://repo.maven.apache.org/maven2/org/apache/velocity/velocity/1.5/velocity-1.5.pom
   [INFO] I/O exception (org.apache.maven.wagon.providers.http.httpclient.conn.HttpHostConnectException) caught when processing request to {s}->https://repo.maven.apache.org:443: Connect to repo.maven.apache.org:443 [repo.maven.apache.org/10.255.255.1] failed: Operation timed out (Connection timed out)
   [INFO] Retrying request to {s}->https://repo.maven.apache.org:443
   [INFO] I/O exception (org.apache.maven.wagon.providers.http.httpclient.conn.HttpHostConnectException) caught when processing request to {s}->https://repo.maven.apache.org:443: Connect to repo.maven.apache.org:443 [repo.maven.apache.org/10.255.255.1] failed: Operation timed out (Connection timed out)
   [INFO] Retrying request to {s}->https://repo.maven.apache.org:443
   ```
   
   


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[GitHub] [knox] pzampino merged pull request #475: KNOX-2639. Build instability because of maven artifact download failure

Posted by GitBox <gi...@apache.org>.
pzampino merged pull request #475:
URL: https://github.com/apache/knox/pull/475


   


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[GitHub] [knox] zeroflag commented on pull request #475: KNOX-2639. Build instability because of maven artifact download failure

Posted by GitBox <gi...@apache.org>.
zeroflag commented on pull request #475:
URL: https://github.com/apache/knox/pull/475#issuecomment-888377142


   cc @smolnar82 @moresandeep @pzampino @lmccay 


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