[REEF-2045] org.apache.reef.webserver.TestHttpServerhttpServerPortRetryTestWithTcpPortProvider() unit test consistently fails on Windows Subsystem for Linux

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: REEF

Environment

Windows Subsystem for Linux with Ubuntu 16.04 and openjdk-8

• Assignee: Unassigned
• Reporter: Sergiy Matusevych
• Created: 25/Sep/18 23:56
• Updated: 26/Sep/18 02:11

Description

Unit test o.a.r.webserver.TestHttpServer.httpServerPortRetryTestWithTcpPortProvider() fails consistently when ran under Windows Subsystem for Linux (WSL). Same test runs fine under plain Windows or Linux.

Logs and stack trace:

Running org.apache.reef.webserver.TestHttpServer
Sep 21, 2018 1:01:11 AM org.apache.reef.webserver.HttpServerImpl tryPort
INFO: Jetty Server started with port: 13,737
Sep 21, 2018 1:01:11 AM org.apache.reef.webserver.HttpServerImpl <init>
INFO: Jetty Server started with port: 13,737
Sep 21, 2018 1:01:11 AM org.apache.reef.webserver.HttpServerImpl tryPort
INFO: Jetty Server started with port: 18,028
Sep 21, 2018 1:01:11 AM org.apache.reef.webserver.HttpServerImpl <init>
INFO: Jetty Server started with port: 18,028
Sep 21, 2018 1:01:11 AM org.apache.reef.webserver.HttpServerImpl tryPort
INFO: Jetty Server started with port: 15,015
Sep 21, 2018 1:01:11 AM org.apache.reef.webserver.HttpServerImpl <init>
INFO: Jetty Server started with port: 15,015
Sep 21, 2018 1:01:12 AM org.apache.reef.webserver.HttpServerImpl tryPort
INFO: Jetty Server started with port: 19,931
Sep 21, 2018 1:01:12 AM org.apache.reef.webserver.HttpServerImpl <init>
INFO: Jetty Server started with port: 19,931
Sep 21, 2018 1:01:12 AM org.apache.reef.webserver.HttpServerImpl tryPort
INFO: Jetty Server started with port: 13,085
Sep 21, 2018 1:01:12 AM org.apache.reef.webserver.HttpServerImpl <init>
INFO: Jetty Server started with port: 13,085
Sep 21, 2018 1:01:12 AM org.apache.reef.webserver.HttpServerImpl tryPort
INFO: Jetty Server started with port: 13,085
Sep 21, 2018 1:01:12 AM org.apache.reef.webserver.HttpServerImpl <init>
INFO: Jetty Server started with port: 13,085
Sep 21, 2018 1:01:12 AM org.apache.reef.webserver.HttpServerImpl tryPort
INFO: Jetty Server started with port: 17,102
Sep 21, 2018 1:01:12 AM org.apache.reef.webserver.HttpServerImpl <init>
INFO: Jetty Server started with port: 17,102
Sep 21, 2018 1:01:12 AM org.apache.reef.webserver.HttpServerImpl addHttpHandler
INFO: addHttpHandler: Reef
Sep 21, 2018 1:01:12 AM org.apache.reef.webserver.HttpServerImpl tryPort
INFO: Jetty Server started with port: 7,737
Sep 21, 2018 1:01:12 AM org.apache.reef.webserver.HttpServerImpl <init>
INFO: Jetty Server started with port: 7,737
Sep 21, 2018 1:01:12 AM org.apache.reef.webserver.HttpServerImpl tryPort
INFO: Jetty Server started with port: 5,624
Sep 21, 2018 1:01:12 AM org.apache.reef.webserver.HttpServerImpl <init>
INFO: Jetty Server started with port: 5,624
Tests run: 6, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 0.823 sec <<< FAILURE! - in org.apache.reef.webserver.TestHttpServerhttpServerPortRetryTestWithTcpPortProvider(org.apache.reef.webserver.TestHttpServer)  Time elapsed: 0.035 sec  <<< FAILURE!
java.lang.AssertionError: Created two web servers on the same port: 13085
        at org.apache.reef.webserver.TestHttpServer.httpServerPortRetryTestWithTcpPortProvider(TestHttpServer.java:136)