Integration test fails on HEAD

[zhangkun83]

I am on HEAD (commit 111f6dd)

./gradlew :grpc-integration-testing:test keeps failing on both Mac and Linux with:

io.grpc.testing.integration.Http2NettyTest > veryLargeRequest FAILED
    java.lang.Exception: test timed out after 30000 milliseconds

io.grpc.testing.integration.Http2NettyTest > veryLargeResponse FAILED
    java.lang.Exception: test timed out after 30000 milliseconds

io.grpc.testing.integration.Http2NettyTest > exchangeContextUnaryCall FAILED
    com.google.common.util.concurrent.UncheckedExecutionException: io.grpc.StatusRuntimeException: UNKNOWN

        Caused by:
        io.grpc.StatusRuntimeException: UNKNOWN

            Caused by:
            javax.net.ssl.SSLException: SSLEngine closed already

io.grpc.testing.integration.Http2NettyTest > emptyUnary FAILED
    java.lang.Exception: test timed out after 10000 milliseconds

io.grpc.testing.integration.Http2NettyTest > pingPong FAILED
    Wanted but not invoked:
    streamObserver.onValue(
        payload {
...

[zhangkun83]

@nmittler
It turns out the culprit is Java 7 because it lacks the necessary cipher suites. Running it on Java 8 solves the problem.

[nmittler]

@ejona86 how well is this documented? Should we update our docs for this?

[nmittler]

@zhangkun83 thanks for digging into this!