Cloudera Manager shows "Concerning Health" for Some of the DataNodes on Oracle Big Data Appliance with "The DataNode has xxx,xxx blocks. Warning threshold: 200,000 block(s)." (Doc ID 1668414.1)

Last updated on AUGUST 01, 2016

Applies to:

Big Data Appliance Integrated Software - Version 2.0.1 and later
Linux x86-64

Symptoms

Cloudera Manager shows "Concerning Health" for some of the DataNodes in the hdfs service.  Upon further investigation you see messages like:

"Currently Started with Concerning Health."


From Cloudera Manager > Services > hdfs > Under Health Tests for the DataNodes with  "Concerning Health" you see a message indicating that the DataNode contains a number of blocks exceeding the threshold of 200,000 blocks:  For example you will see some thing like:

The DataNode has 232,684 blocks. Warning threshold: 200,000 block(s).

From Cloudera Manger under Health Tests this looks like:

Cause

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