[ 
https://issues.apache.org/jira/browse/HDDS-62?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16532583#comment-16532583
 ] 

Elek, Marton edited comment on HDDS-62 at 7/4/18 10:12 AM:
-----------------------------------------------------------

If there is no HEALTHY datanode, the rest client doesn't work: 

{code}
docker-compose exec ksm ozone oz -listVolume http://ksm/
{code}

{code}
2018-07-04 08:28:21 WARN  NativeCodeLoader:60 - Unable to load native-hadoop 
library for your platform... using builtin-java classes where applicable
2018-07-04 08:28:22 ERROR OzoneClientFactory:295 - Couldn't create protocol 
class org.apache.hadoop.ozone.client.rest.RestClient exception: 
java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at 
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at 
org.apache.hadoop.ozone.client.OzoneClientFactory.getClientProtocol(OzoneClientFactory.java:292)
        at 
org.apache.hadoop.ozone.client.OzoneClientFactory.getRestClient(OzoneClientFactory.java:248)
        at 
org.apache.hadoop.ozone.client.OzoneClientFactory.getRestClient(OzoneClientFactory.java:232)
        at 
org.apache.hadoop.ozone.client.OzoneClientFactory.getRestClient(OzoneClientFactory.java:206)
        at 
org.apache.hadoop.ozone.client.OzoneClientFactory.getRestClient(OzoneClientFactory.java:188)
        at 
org.apache.hadoop.ozone.web.ozShell.Handler.verifyURI(Handler.java:85)
        at 
org.apache.hadoop.ozone.web.ozShell.volume.ListVolumeHandler.execute(ListVolumeHandler.java:80)
        at org.apache.hadoop.ozone.web.ozShell.Shell.dispatch(Shell.java:395)
        at org.apache.hadoop.ozone.web.ozShell.Shell.run(Shell.java:135)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
        at org.apache.hadoop.ozone.web.ozShell.Shell.main(Shell.java:114)
Caused by: java.lang.IllegalArgumentException: bound must be positive
        at java.util.Random.nextInt(Random.java:388)
        at 
org.apache.hadoop.ozone.client.rest.DefaultRestServerSelector.getRestServer(DefaultRestServerSelector.java:34)
        at 
org.apache.hadoop.ozone.client.rest.RestClient.getOzoneRestServerAddress(RestClient.java:199)
        at 
org.apache.hadoop.ozone.client.rest.RestClient.<init>(RestClient.java:160)
        ... 16 more
Command Failed : Couldn't create protocol class 
org.apache.hadoop.ozone.client.rest.RestClient
{code}

The error message should be more clean, IMHO

Do we need a separated jira for this?


was (Author: elek):
If there is no HEALTHY datanode, the rest client doesn't work: 

{code}
docker-compose exec ksm ozone oz -listVolume http://ksm/
{code}

{code}
2018-07-04 08:28:21 WARN  NativeCodeLoader:60 - Unable to load native-hadoop 
library for your platform... using builtin-java classes where applicable
2018-07-04 08:28:22 ERROR OzoneClientFactory:295 - Couldn't create protocol 
class org.apache.hadoop.ozone.client.rest.RestClient exception: 
java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at 
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at 
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at 
org.apache.hadoop.ozone.client.OzoneClientFactory.getClientProtocol(OzoneClientFactory.java:292)
        at 
org.apache.hadoop.ozone.client.OzoneClientFactory.getRestClient(OzoneClientFactory.java:248)
        at 
org.apache.hadoop.ozone.client.OzoneClientFactory.getRestClient(OzoneClientFactory.java:232)
        at 
org.apache.hadoop.ozone.client.OzoneClientFactory.getRestClient(OzoneClientFactory.java:206)
        at 
org.apache.hadoop.ozone.client.OzoneClientFactory.getRestClient(OzoneClientFactory.java:188)
        at 
org.apache.hadoop.ozone.web.ozShell.Handler.verifyURI(Handler.java:85)
        at 
org.apache.hadoop.ozone.web.ozShell.volume.ListVolumeHandler.execute(ListVolumeHandler.java:80)
        at org.apache.hadoop.ozone.web.ozShell.Shell.dispatch(Shell.java:395)
        at org.apache.hadoop.ozone.web.ozShell.Shell.run(Shell.java:135)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
        at org.apache.hadoop.ozone.web.ozShell.Shell.main(Shell.java:114)
Caused by: java.lang.IllegalArgumentException: bound must be positive
        at java.util.Random.nextInt(Random.java:388)
        at 
org.apache.hadoop.ozone.client.rest.DefaultRestServerSelector.getRestServer(DefaultRestServerSelector.java:34)
        at 
org.apache.hadoop.ozone.client.rest.RestClient.getOzoneRestServerAddress(RestClient.java:199)
        at 
org.apache.hadoop.ozone.client.rest.RestClient.<init>(RestClient.java:160)
        ... 16 more
Command Failed : Couldn't create protocol class 
org.apache.hadoop.ozone.client.rest.RestClient
{code}

Do we need a separated jira for this?

>  Cleanup error messages
> -----------------------
>
>                 Key: HDDS-62
>                 URL: https://issues.apache.org/jira/browse/HDDS-62
>             Project: Hadoop Distributed Data Store
>          Issue Type: Sub-task
>          Components: SCM
>    Affects Versions: 0.2.1
>            Reporter: Anu Engineer
>            Assignee: Anu Engineer
>            Priority: Major
>              Labels: OzonePostMerge
>
> Many error messages thrown from ozone are written for developers by 
> developers. We need to review all publicly visible error messages to make 
> sure it correct, includes enough context (stack traces do not count) and 
> makes sense for the reader.



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