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https://issues.apache.org/jira/browse/HDFS-15196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17048232#comment-17048232
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Fengnan Li commented on HDFS-15196:
-----------------------------------

Thanks for the review [~elgoiri] Uploaded [^HDFS-15196.004.patch]
{quote} * I don't quite get the structure for createNNConfiguration, it looks 
like we are passing the config for everything. I remember there was a way to 
setup the NN too.{quote}
I changed the name to createNNOverrideConfiguration to make it clearer since 
this conf will be added as override before namenode is initialized.
{quote} * Can we make the test assert for mount points and so on?{quote}
I added the test per item under the dir. Not sure what you meant by asserting 
for mount points, can you elaborate?

 

> RBF: RouterRpcServer getListing cannot list large dirs correctly
> ----------------------------------------------------------------
>
>                 Key: HDFS-15196
>                 URL: https://issues.apache.org/jira/browse/HDFS-15196
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Fengnan Li
>            Assignee: Fengnan Li
>            Priority: Critical
>         Attachments: HDFS-15196.001.patch, HDFS-15196.002.patch, 
> HDFS-15196.003.patch, HDFS-15196.003.patch, HDFS-15196.004.patch
>
>
> In RouterRpcServer, getListing function is handled as two parts:
>  # Union all partial listings from destination ns + paths
>  # Append mount points for the dir to be listed
> In the case of large dir which is bigger than DFSConfigKeys.DFS_LIST_LIMIT 
> (with default value 1k), the batch listing will be used and the startAfter 
> will be used to define the boundary of each batch listing. However, step 2 
> here will add existing mount points, which will mess up with the boundary of 
> the batch, thus making the next batch startAfter wrong.
> The fix is just to append the mount points when there is no more batch query 
> necessary.



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