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Cisco Bug: CSCvh73431 - Datanodes flap or go dead - multiple services in Tetration show impacted in service status

Last Modified

Aug 13, 2019

Products (1)

  • Cisco Tetration Analytics

Known Affected Releases

2.1(1.31) 2.1(1.33)

Description (partial)

Symptom:
The HDFS cleanup in 2.1.1.31 version occurs based on size. This can result in a large number of files on HDFS sometimes depending on rate of data flow into the cluster. This will eventually cause issues with the Datanode Java process GC, this results in them flapping. [Datanodes will show as dead when you run the command namenode_jmx on namenode-1 ]



Conditions:
Predominantly affects 8RU -  2.1.1.31/33 clusters with low utilization.
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