Artem Plotnikov created ZEPPELIN-4746:
-----------------------------------------
Summary: Sometimes Zeppelin server stops responding to WS requests
Key: ZEPPELIN-4746
URL: https://issues.apache.org/jira/browse/ZEPPELIN-4746
Project: Zeppelin
Issue Type: Bug
Affects Versions: 0.8.2
Environment: [^zeppelin-thread-dump.txt]
Reporter: Artem Plotnikov
Attachments: zeppelin-thread-dump.txt
Once in a couple of week we are experiencing the an issue - Zeppelin server
stops responding to WebSocket requests from any interpreters (spark, jdbc and
so on).
jcmd <pid> Thread.print` command produces thread dump (in attachement), which
is the same for multiple runs with RemoteInterpreterServer.java:275 waiting at
remoteInterpreterServer.join().
Interpreter restarts didn't take any effect, but server responds to API
requests and successfully loads notebooks. In WebSocket console in browser I
can see outgoing WebSocket requests, but no response from server.
Also, there is no specific code or routine, which reproduces this issue.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
