[KNOX-900] UnitTest WebsocketMultipleConnectionTest intermittantly fails with NPE

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.11.0
• Fix Version/s: 0.12.0
• Component/s: Tests
• Environment: Jenkins
• Assignee: Sandeep More
• Reporter: Sandeep More
• Created: 03/Mar/17 17:13
• Updated: 28/Mar/19 14:16
• Resolved: 03/Mar/17 18:49

Description

https://builds.apache.org/job/Knox-0.12.0/lastBuild/org.apache.knox$gateway-server/testReport/org.apache.hadoop.gateway.websockets/WebsocketMultipleConnectionTest/testMultipleConnections/

Error Message

RemoteEndpoint unavailable, outgoing connection not open

Stacktrace

org.eclipse.jetty.websocket.api.WebSocketException: RemoteEndpoint unavailable, outgoing connection not open
at org.eclipse.jetty.websocket.common.WebSocketSession.getRemote(WebSocketSession.java:252)
at org.eclipse.jetty.websocket.jsr356.AbstractJsrRemote.<init>(AbstractJsrRemote.java:50)
at org.eclipse.jetty.websocket.jsr356.JsrBasicRemote.<init>(JsrBasicRemote.java:44)
at org.eclipse.jetty.websocket.jsr356.JsrSession.getBasicRemote(JsrSession.java:166)
at org.apache.hadoop.gateway.websockets.WebsocketMultipleConnectionTest.testMultipleConnections(WebsocketMultipleConnectionTest.java:165)

Standard Output

ERROR [org.apache.hadoop.gateway.websockets] Error: java.lang.NullPointerException