Regarding the latter message on invalid token. That stacktrace possible
when someone logs out from Zeppelin but keeps the window open in browser.
Then it keeps sending websocket ping messages with invalid ticket which
errors in Zeppelin.
On Thu, Sep 8, 2016 at 11:06 AM, Polina Marasanova <
polina.
One more thing. In Zeppelin logs there are many messages like this:
16/09/08 02:03:46 DEBUG NotebookServer: RECEIVE << PING
16/09/08 02:03:46 DEBUG NotebookServer: RECEIVE PRINCIPAL <<
16/09/08 02:03:46 DEBUG NotebookServer: RECEIVE TICKET <<
16/09/08 02:03:46 DEBUG NotebookServer: RECEIVE ROLES