[MarkLogic Dev General] Error while creating MarkLogic Forest with HDFS as data directory

Justin Makeig Justin.Makeig at marklogic.com
Fri Mar 13 08:15:35 PDT 2015


Which version of MarkLogic and which vendor and version of Hadoop are you using?

Justin


--
Justin Makeig
Director, Product Management
MarkLogic

> On Mar 13, 2015, at 7:48 AM, Sudheer Yalaverthi <sudheer.yalaverthi at db.com> wrote:
> 
>  
> Hi,
>  
> I have been trying a MarkLogic tiered storage POC with HDFS as storage layer for one of the tier. I have been trying to create a forest with data directory as hadoop file system directory.
> 
> I have one hadoop cluster and one Marklogic cluster. I downloaded the configuration files from Hadoop and copied them to /usr/hadoop directory on the MarkLogic machine and I have also downloaded the required jar files based on the documentation here. https://docs.marklogic.com/guide/performance/disk-storage#id_27091 <https://docs.marklogic.com/guide/performance/disk-storage#id_27091>
> I have placed these as well in the /usr/hadoop directory with proper lib structure.
> 
> I am getting the below error when I try creating the forest.
> 
> 2015-03-12 19:17:20.087 Error: Automount Foresthadoop: SVC-HDFSNOT: HDFS not available for 'hdfs://{namdenode_hostname}:8020/tmp': unknown error
> 
> I tried changing the log level to finest in the group configurations and I have also added trace events for forest. But I am not able to get any additional details that could point me to what the error is about.
> 
> Any help in this regard would be appreciated. Please let me know if there are any other ways to connect to HDFS as a forest directory.
> 
>  
>  
>  
> Thanks,
> Sudheer
> 
> 
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