[YARN-7396] NPE when accessing container logs due to null dirsHandler

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.1.0, 2.10.0
• Target Version/s: 3.1.0
• Hadoop Flags: Reviewed
• Assignee: Jonathan Hung
• Reporter: Jonathan Hung
• Created: 25/Oct/17 23:05
• Updated: 30/Aug/19 02:45
• Resolved: 02/Nov/17 00:01

Description

java.lang.NullPointerException
	at org.apache.hadoop.yarn.server.nodemanager.webapp.NMWebAppFilter.containerLogPageRedirectPath(NMWebAppFilter.java:96)
	at org.apache.hadoop.yarn.server.nodemanager.webapp.NMWebAppFilter.doFilter(NMWebAppFilter.java:62)
	at com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:829)

In YARN-6620 the NMContext creation in NodeManager#serviceInit was moved. It's now created before the dirsHandler is initialized. So when nmContext.getLocalDirsHandler is called, it's null.

Issue Links

• is broken by: YARN-6620 Add support in NodeManager to isolate GPU devices by using CGroups