Heap consumed by SSLEngineImpl and JettyAlpnOpenListener$1 with HTTP/2 enabled on HTTPS

Solution Unverified - Updated -

Issue

  • After enabling HTTP/2 on our HTTPS listener, we are seeing heap consumed by many accumulating instances of sun.security.ssl.SSLEngineImpl and io.undertow.server.protocol.http.JettyAlpnOpenListener$1 in org.eclipse.jetty.alpn.ALPN objects map.

Environment

  • JBoss Enterprise Application Platform (EAP) 7.0.5 and earlier

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