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Oracle Big Data Appliance Servers Appear To Be Running Out Of Memory (Doc ID 1568365.1)

Last updated on JANUARY 15, 2014

Applies to:

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

Symptoms

Servers on the Oracle Big Data Appliance (BDA) appear to be running out of memory even though no jobs (maps/reducers) are running. For example, the output from the "top" command for a data node on the BDA cluster,  shows of the ~47GB of available RAM,  ~39GB RAM is used with only ~8GB is free.

 

$ top

top - 10:32:02 up 61 days, 1:06, 1 user, load average: 0.04, 0.68, 3.40
Tasks: 726 total, 1 running, 725 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 0.1%sy, 0.0%ni, 99.9%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 49285744k total, 40591608k used, 8694136k free, 363876k buffers
Swap: 0k total, 0k used, 0k free, 36085364k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3833 root 20 0 13248 1620 820 R 1.0 0.0 0:00.16 top
7685 mapred 20 0 1704m 312m 14m S 1.0 0.6 261:50.57 java
9919 hdfs 20 0 1760m 606m 5856 S 0.7 1.3 848:40.13 java
...

 

Cause

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In this Document
Symptoms
Cause
Solution


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