[KARAF-3906] NPE when doing log:clear and log:display and log full=true

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0.0
• Fix Version/s: 4.0.1
• Assignee: Christian Schneider
• Reporter: Christian Schneider
• Created: 06/Aug/15 09:49
• Updated: 06/Aug/15 09:53
• Resolved: 06/Aug/15 09:53

Description

When executing the below commands the NPE delow appears. The reason seems to be that the full flag is not reset to false when clear is called.
So to reproduce make sure you create a lot of log entries first.

karaf@trun()> log:clear
karaf@trun()> log:display
Error executing command: java.lang.NullPointerException
karaf@trun()> log:tail
2015-08-06 11:46:31,833 | ERROR | nsole user karaf | ShellUtil | 50 - org.apache.karaf.shell.core - 4.0.0 | Exception caught while executing command
java.lang.NullPointerException
at org.apache.karaf.log.command.DisplayLog.execute(DisplayLog.java:85)[44:org.apache.karaf.log.core:4.0.0]
at org.apache.karaf.shell.impl.action.command.ActionCommand.execute(ActionCommand.java:83)[50:org.apache.karaf.shell.core:4.0.0]
at org.apache.karaf.shell.impl.console.osgi.secured.SecuredCommand.execute(SecuredCommand.java:67)[50:org.apache.karaf.shell.core:4.0.0]
at org.apache.karaf.shell.impl.console.osgi.secured.SecuredCommand.execute(SecuredCommand.java:87)[50:org.apache.karaf.shell.core:4.0.0]
at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:480)[50:org.apache.karaf.shell.core:4.0.0]
at org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:406)[50:org.apache.karaf.shell.core:4.0.0]
at org.apache.felix.gogo.runtime.Pipe.run(Pipe.java:108)[50:org.apache.karaf.shell.core:4.0.0]
at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:182)[50:org.apache.karaf.shell.core:4.0.0]
at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:119)[50:org.apache.karaf.shell.core:4.0.0]
at org.apache.felix.gogo.runtime.CommandSessionImpl.execute(CommandSessionImpl.java:94)[50:org.apache.karaf.shell.core:4.0.0]
at org.apache.karaf.shell.impl.console.ConsoleSessionImpl.run(ConsoleSessionImpl.java:267)[50:org.apache.karaf.shell.core:4.0.0]
at java.lang.Thread.run(Thread.java:745)[:1.7.0_60]