Datanode denied communication with namenode

In a Cloudera cluster we had a few nodes reporting the following error message in the logs under

The error included:

Datanode denied communication with namenode because the host is not in the include-list: : DatanodeRegistration

One solution could be to ‘Refresh Node List’ as shown in the screenshot below. Find it by clicking on the Clusters > HDFS and then click on ‘NameNode’ in the ‘Status Summary’. After that choose ‘Refresh Node List’ under the ‘Actions’ menu. YMMV


Leave a Reply

  • (will not be published)

XHTML: You can use these tags: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code class="" title="" data-url=""> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong> <pre class="" title="" data-url=""> <span class="" title="" data-url="">