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

Sudheer Yalaverthi sudheer.yalaverthi at db.com
Fri Mar 13 07:48:47 PDT 2015


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

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.


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