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https://issues.apache.org/jira/browse/HADOOP-17837?focusedWorklogId=634843&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-634843
 ]

ASF GitHub Bot logged work on HADOOP-17837:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 05/Aug/21 22:38
            Start Date: 05/Aug/21 22:38
    Worklog Time Spent: 10m 
      Work Description: hadoop-yetus commented on pull request #3272:
URL: https://github.com/apache/hadoop/pull/3272#issuecomment-893865705


   :confetti_ball: **+1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime |  Logfile | Comment |
   |:----:|----------:|--------:|:--------:|:-------:|
   | +0 :ok: |  reexec  |   0m 51s |  |  Docker mode activated.  |
   |||| _ Prechecks _ |
   | +1 :green_heart: |  dupname  |   0m  0s |  |  No case conflicting files 
found.  |
   | +0 :ok: |  codespell  |   0m  0s |  |  codespell was not available.  |
   | +1 :green_heart: |  @author  |   0m  0s |  |  The patch does not contain 
any @author tags.  |
   | +1 :green_heart: |  test4tests  |   0m  0s |  |  The patch appears to 
include 1 new or modified test files.  |
   |||| _ trunk Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |  30m 42s |  |  trunk passed  |
   | +1 :green_heart: |  compile  |  21m 13s |  |  trunk passed with JDK 
Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04  |
   | +1 :green_heart: |  compile  |  18m 26s |  |  trunk passed with JDK 
Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10  |
   | +1 :green_heart: |  checkstyle  |   1m  8s |  |  trunk passed  |
   | +1 :green_heart: |  mvnsite  |   1m 38s |  |  trunk passed  |
   | +1 :green_heart: |  javadoc  |   1m  8s |  |  trunk passed with JDK 
Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04  |
   | +1 :green_heart: |  javadoc  |   1m 41s |  |  trunk passed with JDK 
Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10  |
   | +1 :green_heart: |  spotbugs  |   2m 26s |  |  trunk passed  |
   | +1 :green_heart: |  shadedclient  |  15m 52s |  |  branch has no errors 
when building and testing our client artifacts.  |
   |||| _ Patch Compile Tests _ |
   | +1 :green_heart: |  mvninstall  |   0m 54s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |  20m 25s |  |  the patch passed with JDK 
Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04  |
   | +1 :green_heart: |  javac  |  20m 25s |  |  the patch passed  |
   | +1 :green_heart: |  compile  |  18m 25s |  |  the patch passed with JDK 
Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10  |
   | +1 :green_heart: |  javac  |  18m 25s |  |  the patch passed  |
   | +1 :green_heart: |  blanks  |   0m  0s |  |  The patch has no blanks 
issues.  |
   | +1 :green_heart: |  checkstyle  |   1m  6s |  |  the patch passed  |
   | +1 :green_heart: |  mvnsite  |   1m 36s |  |  the patch passed  |
   | +1 :green_heart: |  javadoc  |   1m  8s |  |  the patch passed with JDK 
Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04  |
   | +1 :green_heart: |  javadoc  |   1m 41s |  |  the patch passed with JDK 
Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10  |
   | +1 :green_heart: |  spotbugs  |   2m 34s |  |  the patch passed  |
   | +1 :green_heart: |  shadedclient  |  16m  5s |  |  patch has no errors 
when building and testing our client artifacts.  |
   |||| _ Other Tests _ |
   | +1 :green_heart: |  unit  |  17m 11s |  |  hadoop-common in the patch 
passed.  |
   | +1 :green_heart: |  asflicense  |   0m 59s |  |  The patch does not 
generate ASF License warnings.  |
   |  |   | 177m 48s |  |  |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | ClientAPI=1.41 ServerAPI=1.41 base: 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3272/1/artifact/out/Dockerfile
 |
   | GITHUB PR | https://github.com/apache/hadoop/pull/3272 |
   | JIRA Issue | HADOOP-17837 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall 
mvnsite unit shadedclient spotbugs checkstyle codespell |
   | uname | Linux 696c85f030a5 4.15.0-151-generic #157-Ubuntu SMP Fri Jul 9 
23:07:57 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux |
   | Build tool | maven |
   | Personality | dev-support/bin/hadoop.sh |
   | git revision | trunk / 571fc27f6c0e17af6b04fc79a7c14b2d40938da3 |
   | Default Java | Private Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
   | Multi-JDK versions | 
/usr/lib/jvm/java-11-openjdk-amd64:Ubuntu-11.0.11+9-Ubuntu-0ubuntu2.20.04 
/usr/lib/jvm/java-8-openjdk-amd64:Private 
Build-1.8.0_292-8u292-b10-0ubuntu1~20.04-b10 |
   |  Test Results | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3272/1/testReport/ |
   | Max. process+thread count | 1534 (vs. ulimit of 5500) |
   | modules | C: hadoop-common-project/hadoop-common U: 
hadoop-common-project/hadoop-common |
   | Console output | 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3272/1/console |
   | versions | git=2.25.1 maven=3.6.3 spotbugs=4.2.2 |
   | Powered by | Apache Yetus 0.14.0-SNAPSHOT https://yetus.apache.org |
   
   
   This message was automatically generated.
   
   


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Issue Time Tracking
-------------------

    Worklog Id:     (was: 634843)
    Time Spent: 20m  (was: 10m)

> Make it easier to debug UnknownHostExceptions from NetUtils.connect
> -------------------------------------------------------------------
>
>                 Key: HADOOP-17837
>                 URL: https://issues.apache.org/jira/browse/HADOOP-17837
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Bryan Beaudreault
>            Priority: Minor
>              Labels: pull-request-available
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> Most UnknownHostExceptions thrown throughout hadoop include a useful message, 
> either the hostname that was not found or some other descriptor of the 
> problem. The UnknownHostException thrown from NetUtils.connect only includes 
> the [message of the underlying 
> UnresolvedAddressException|https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/NetUtils.java#L592].
>  If you take a look at the source for UnresolvedAddressException, [it only 
> has a no-args 
> constructor|https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/nio/channels/UnresolvedAddressException.html]
>  (java11, but same is true in other versions). So it never has a message, 
> meaning the UnknownHostException message is empty.
> We should include the endpoint.toString() in the UnknownHostException thrown 
> by NetUtils.connect



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