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From "Jungtaek Lim (Jira)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-30313) Flaky test: MasterSuite.master/worker web ui available with reverseProxy
Date Fri, 20 Dec 2019 01:45:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-30313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17000547#comment-17000547
] 

Jungtaek Lim commented on SPARK-30313:
--------------------------------------

Flaky test means it doesn't fail consistently. Normally it tends to be harder to debug and
have to rely on log or try to reproduce, via various approach including running the test infinitely
till hitting it.

> Flaky test: MasterSuite.master/worker web ui available with reverseProxy
> ------------------------------------------------------------------------
>
>                 Key: SPARK-30313
>                 URL: https://issues.apache.org/jira/browse/SPARK-30313
>             Project: Spark
>          Issue Type: Bug
>          Components: Tests
>    Affects Versions: 3.0.0
>            Reporter: Marcelo Masiero Vanzin
>            Priority: Major
>
> Saw this test fail a few times on PRs. e.g.:
> [https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/115583/testReport/org.apache.spark.deploy.master/MasterSuite/master_worker_web_ui_available_with_reverseProxy/]
>  
> {noformat}
> Error Message
> org.scalatest.exceptions.TestFailedDueToTimeoutException: The code passed to eventually
never returned normally. Attempted 43 times over 5.0642265779999995 seconds. Last failure
message: Server returned HTTP response code: 500 for URL: http://localhost:45395/proxy/worker-20191219134839-localhost-36054/json/.
> Stacktrace
> sbt.ForkMain$ForkError: org.scalatest.exceptions.TestFailedDueToTimeoutException: The
code passed to eventually never returned normally. Attempted 43 times over 5.0642265779999995
seconds. Last failure message: Server returned HTTP response code: 500 for URL: http://localhost:45395/proxy/worker-20191219134839-localhost-36054/json/.
> 	at org.scalatest.concurrent.Eventually.tryTryAgain$1(Eventually.scala:432)
> 	at org.scalatest.concurrent.Eventually.eventually(Eventually.scala:439)
> 	at org.scalatest.concurrent.Eventually.eventually$(Eventually.scala:391)
> 	at org.apache.spark.deploy.master.MasterSuite.eventually(MasterSuite.scala:111)
> 	at org.scalatest.concurrent.Eventually.eventually(Eventually.scala:308)
> 	at org.scalatest.concurrent.Eventually.eventually$(Eventually.scala:307)
> 	at org.apache.spark.deploy.master.MasterSuite.eventually(MasterSuite.scala:111)
> 	at org.apache.spark.deploy.master.MasterSuite.$anonfun$new$14(MasterSuite.scala:318)
> 	at org.scalatest.OutcomeOf.outcomeOf(OutcomeOf.scala:85)
> 	---
> Caused by: sbt.ForkMain$ForkError: java.io.IOException: Server returned HTTP response
code: 500 for URL: http://localhost:45395/proxy/worker-20191219134839-localhost-36054/json/
> 	at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1894)
> 	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492)
> 	at java.net.URL.openStream(URL.java:1045)
> 	at scala.io.Source$.fromURL(Source.scala:144)
> 	at scala.io.Source$.fromURL(Source.scala:134)
> {noformat}



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