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https://issues.apache.org/jira/browse/HDDS-174?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16520895#comment-16520895
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Arpit Agarwal edited comment on HDDS-174 at 6/22/18 11:32 PM:
--------------------------------------------------------------

I made a trivial fix to get the real error code in the protobuf translator. Now 
it tells me the real code message, but the detailed cause/exception is still 
not printed.
{code:java}
$ ozone oz -putKey /vol1/bucket1/key1 -file foo.txt
Command Failed : Create key failed, error:KEY_ALLOCATION_ERROR
{code}
For the detailed error, we need to go to the OzoneManager logs:
{code:java}
 2018-06-22 23:07:55 ERROR KeyManagerImpl:312 - Key open failed for volume:vol1 
bucket:bucket1 key:key1
 org.apache.hadoop.ipc.RemoteException(java.lang.NullPointerException): 
Pipeline type=RATIS/replication=THREE couldn't be found for the new container. 
Do you have enoug
        at 
com.google.common.base.Preconditions.checkNotNull(Preconditions.java:231)
        at 
org.apache.hadoop.hdds.scm.container.ContainerStateManager.allocateContainer(ContainerStateManager.java:292)
        at 
org.apache.hadoop.hdds.scm.container.ContainerMapping.allocateContainer(ContainerMapping.java:231)
        at 
org.apache.hadoop.hdds.scm.block.BlockManagerImpl.preAllocateContainers(BlockManagerImpl.java:162)
        at 
org.apache.hadoop.hdds.scm.block.BlockManagerImpl.allocateBlock(BlockManagerImpl.java:264)
        at 
org.apache.hadoop.hdds.scm.server.SCMBlockProtocolServer.allocateBlock(SCMBlockProtocolServer.java:143)
        at 
org.apache.hadoop.ozone.protocolPB.ScmBlockLocationProtocolServerSideTranslatorPB.allocateScmBlock(ScmBlockLocationProtocolServerSideTranslatorPB.java:74)
        at 
org.apache.hadoop.hdds.protocol.proto.ScmBlockLocationProtocolProtos$ScmBlockLocationProtocolService$2.callBlockingMethod(ScmBlockLocationProtocolProtos.java:6271)
{code}


was (Author: arpitagarwal):
I made a trivial fix to get the real error message in the protobuf translator. 
Now it tells me the real error message, but the detailed cause/exception is 
still not printed.
{code}
$ ozone oz -putKey /vol1/bucket1/key1 -file foo.txt
Command Failed : Create key failed, error:KEY_ALLOCATION_ERROR
{code}

For the detailed error, we need to go to the OzoneManager logs:
{code}
 2018-06-22 23:07:55 ERROR KeyManagerImpl:312 - Key open failed for volume:vol1 
bucket:bucket1 key:key1
 org.apache.hadoop.ipc.RemoteException(java.lang.NullPointerException): 
Pipeline type=RATIS/replication=THREE couldn't be found for the new container. 
Do you have enoug
        at 
com.google.common.base.Preconditions.checkNotNull(Preconditions.java:231)
        at 
org.apache.hadoop.hdds.scm.container.ContainerStateManager.allocateContainer(ContainerStateManager.java:292)
        at 
org.apache.hadoop.hdds.scm.container.ContainerMapping.allocateContainer(ContainerMapping.java:231)
        at 
org.apache.hadoop.hdds.scm.block.BlockManagerImpl.preAllocateContainers(BlockManagerImpl.java:162)
        at 
org.apache.hadoop.hdds.scm.block.BlockManagerImpl.allocateBlock(BlockManagerImpl.java:264)
        at 
org.apache.hadoop.hdds.scm.server.SCMBlockProtocolServer.allocateBlock(SCMBlockProtocolServer.java:143)
        at 
org.apache.hadoop.ozone.protocolPB.ScmBlockLocationProtocolServerSideTranslatorPB.allocateScmBlock(ScmBlockLocationProtocolServerSideTranslatorPB.java:74)
        at 
org.apache.hadoop.hdds.protocol.proto.ScmBlockLocationProtocolProtos$ScmBlockLocationProtocolService$2.callBlockingMethod(ScmBlockLocationProtocolProtos.java:6271)
{code}

> Shell error messages are often cryptic
> --------------------------------------
>
>                 Key: HDDS-174
>                 URL: https://issues.apache.org/jira/browse/HDDS-174
>             Project: Hadoop Distributed Data Store
>          Issue Type: Improvement
>            Reporter: Arpit Agarwal
>            Assignee: Nanda kumar
>            Priority: Critical
>             Fix For: 0.2.1
>
>
> Error messages in the Ozone shell are often too cryptic. e.g.
> {code}
> $ ozone oz -putKey /vol1/bucket1/key1 -file foo.txt
> Command Failed : Create key failed, error:INTERNAL_ERROR
> {code}



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