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https://issues.apache.org/jira/browse/HDDS-187?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16533982#comment-16533982
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Xiaoyu Yao commented on HDDS-187:
---------------------------------

Thanks [~ajayydv] for the update. The patch v6 looks good to me. I just have 
three minor comments:

 

*HddsIdFactory.java*

*Line 37:* Time.monotonicNowNanos() may not be a good choice for cmd id. For 
example,  when the cmds are issiued simultaneously, you may get the same id 
from multiple cmds, which might cause problem with the cmdStatusMap in 
*StateContext class*.  Have you consider extend SequentialNumber class like we 
do for the HDFS block id?

 

*Line 45: should this be static as we have a private contructor here?*

 

*Jenkins 2 java doc issues.*

> Command status publisher for datanode
> -------------------------------------
>
>                 Key: HDDS-187
>                 URL: https://issues.apache.org/jira/browse/HDDS-187
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>          Components: SCM
>    Affects Versions: 0.2.1
>            Reporter: Ajay Kumar
>            Assignee: Ajay Kumar
>            Priority: Major
>             Fix For: 0.2.1
>
>         Attachments: HDDS-187.00.patch, HDDS-187.01.patch, HDDS-187.02.patch, 
> HDDS-187.03.patch, HDDS-187.04.patch, HDDS-187.05.patch, HDDS-187.06.patch
>
>
> Currently SCM sends set of commands for DataNode. DataNode executes them via 
> CommandHandler. This jira intends to create a Command status publisher which 
> will return status of these commands back to the SCM.



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