Karaf console throws error when logging in and exits

[stefan.hoehn (Stefan Höhn)]

When I try to access the karaf console, I have the following symptom:

• ssh openhab@localhost -p 8101
• I enter the pw: hab…
• It seems to login as it shows the openhab ascii logo and shows the text that explains what you can do (“Hit tab…”)
• but then it throws the following error

Error executing command: For input string: "1517090219544"
Connection to localhost closed.

and I I am thrown out again.

Any idea what the problem could be or how I can track down the problem?

Thanks in advance
Stefan

I am using

• Hardware: rasp pi 3
• OS: openhabian
• openHAB version: 2.2.0

[Josar]

Maybe try the command line console. Connect with ssh and type

openhab-cli console

[stefan.hoehn (Stefan Höhn)]

@Josar

openhab-cli console

Thanks Josar,

I just did a minute ago (as desperate as I was) and got the same

Logging in as openhab

Password:

   __  _____    ____

____ ____ ___ ____ / / / / | / __ )
/ __ / __ / _ / __ / // / /| | / __ |
/ // / // / __/ / / / __ / ___ |/ // /
_/ ./_// /// /// |/___/
/_/ 2.2.0
Release Build

Hit ‘’ for a list of available commands
and ‘[cmd] --help’ for help on a specific command.
Hit ‘’ or type ‘system:shutdown’ or ‘logout’ to shutdown openHAB.

Error executing command: For input string: “1517090219544”

cheers
Stefan

[stefan.hoehn (Stefan Höhn)]

I have activated the karaf log and it produces the following exception

 2018-02-25 23:52:16.064 [ERROR] [apache.karaf.shell.support.ShellUtil] - Exception caught while executing command

   java.lang.NumberFormatException: For input string: "1517090219544"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) ~[?:?]
at java.lang.Long.parseLong(Long.java:578) ~[?:?]
at java.lang.Long.parseLong(Long.java:631) ~[?:?]
at org.jline.reader.impl.history.DefaultHistory.lambda$load$0(DefaultHistory.java:87) ~[?:?]
at java.util.Iterator.forEachRemaining(Iterator.java:116) [?:?]
at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) [?:?]
at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580) [?:?]
at org.jline.reader.impl.history.DefaultHistory.load(DefaultHistory.java:85) [14:org.jline:3.5.1.sp1]
at org.jline.reader.impl.history.DefaultHistory.attach(DefaultHistory.java:68) [14:org.jline:3.5.1.sp1]
at org.jline.reader.impl.LineReaderImpl.readLine(LineReaderImpl.java:475) [14:org.jline:3.5.1.sp1]
at org.apache.karaf.shell.impl.console.ConsoleSessionImpl.run(ConsoleSessionImpl.java:349) [11:org.apache.karaf.shell.core:4.1.3]

at java.lang.Thread.run(Thread.java:748) [?:?]

2018-02-25 23:52:16.064 [ERROR] [apache.karaf.shell.support.ShellUtil] - Exception caught while executing command

java.lang.NumberFormatException: For input string: "1517090219544"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) ~[?:?]
at java.lang.Long.parseLong(Long.java:578) ~[?:?]
at java.lang.Long.parseLong(Long.java:631) ~[?:?]
at org.jline.reader.impl.history.DefaultHistory.lambda$load$0(DefaultHistory.java:87) ~[?:?]
at java.util.Iterator.forEachRemaining(Iterator.java:116) [?:?]
at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801) [?:?]
at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580) [?:?]
at org.jline.reader.impl.history.DefaultHistory.load(DefaultHistory.java:85) [14:org.jline:3.5.1.sp1]
at org.jline.reader.impl.history.DefaultHistory.attach(DefaultHistory.java:68) [14:org.jline:3.5.1.sp1]
at org.jline.reader.impl.LineReaderImpl.readLine(LineReaderImpl.java:475) [14:org.jline:3.5.1.sp1]
at org.apache.karaf.shell.impl.console.ConsoleSessionImpl.run(ConsoleSessionImpl.java:349) [11:org.apache.karaf.shell.core:4.1.3]

at java.lang.Thread.run(Thread.java:748) [?:?]

[Josar]

Clear the Cache

Often when one encounters a problem with OH, particularly after an update, OH will refuse to run or certain parts of OH stop working. Some reported errors include: 500 or 404 errors when accessing the UIs lots of exceptions from Jetty or other core components in openhab.log OH refuses to start at all The first step in debugging the problem is to clear the tmp and cache. Installed OH If you are running an installed OH (openHABian, installed using apt or yum): openhab-cli stop openhab-cl…

[stefan.hoehn (Stefan Höhn)]

Thanks for not giving up:
I cleared all the cache as described there but unfortunately the problem stays…

and I went on investigating:

What stroke me in the exception is that it tries to read the “DefaultHistory”. When I looked into the source of org.jline.reader.impl.history.DefaultHistory on github I got the feeling it tries to read the karaf history file but unfortunately I couldn’t directly find it until I finally got so desperate that I just searched the whole disc for “1517090219544” and I found the file. It is in the “hidden” directory “.karaf” (/var/lib/openhab2/.karaf) and is called “karaf41.history”.

I then looked into the file and it seems to be the history of the console and looks similar to this (“excerpt”)

1519062633979:feature:install openhab-transformation-regex
1519062646508:logout
1519073299907:feature:list
1519073335327:feature:list |
1519155183950:e
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@1517090219544:smarthome things list | more
1517090229723:smarthome things list
1517090233369:smarthome
1517090247942:smarthome things
151709 …

What is weird is actually the line that is “1517090219544” as it starts with ^@^@^@^…and it looks like this is some garbage that happened during a crash of the system…at least this does not belong there!

I fired up the editor, deleted all these crazy characters, saved the file and bingo, the console works again!

a good time to go to sleep now

[Josar]

Could you add the full path to your description so someone with the same error can find it faster?

[stefan.hoehn (Stefan Höhn)]

Absolutely: It is “/var/lib/openhab2/.karaf”