[UIMA-4397] DUCC Agent throws NumberFormatException when scraping cpu time from top

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0-Ducc
• Component/s: DUCC
• Assignee: Jaroslaw Cwiklik
• Reporter: Jaroslaw Cwiklik
• Created: 15/May/15 20:54
• Updated: 03/Aug/15 14:28
• Resolved: 03/Aug/15 14:28

Description

An agent collects per process CPU stats by using the following:
top -b -n 1 -p "pid" | tail -n 2 | head -n 1 | awk '

{print $9}

';

The above seems to cause a NumberFormatException while trying to convert scraped output into an integer. The exception is:

java.lang.NumberFormatException: For input string: "%CPU"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:76)
at java.lang.Integer.parseInt(Integer.java:492)
at java.lang.Integer.valueOf(Integer.java:593)
at org.apache.uima.ducc.agent.processors.LinuxProcessMetricsProcessor.collectProcessCurrentCPU(LinuxProcessMetricsProce\ssor.java:462)

When running the command by hand I seem to be getting a numeric value.