From users-return-268681-archive-asf-public=cust-asf.ponee.io@tomcat.apache.org Mon Nov 4 23:19:53 2019 Return-Path: X-Original-To: archive-asf-public@cust-asf.ponee.io Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [207.244.88.153]) by mx-eu-01.ponee.io (Postfix) with SMTP id D86C8180658 for ; Tue, 5 Nov 2019 00:19:52 +0100 (CET) Received: (qmail 12552 invoked by uid 500); 4 Nov 2019 23:19:48 -0000 Mailing-List: contact users-help@tomcat.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: "Tomcat Users List" Delivered-To: mailing list users@tomcat.apache.org Received: (qmail 12537 invoked by uid 99); 4 Nov 2019 23:19:48 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd3-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 04 Nov 2019 23:19:48 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd3-us-west.apache.org (ASF Mail Server at spamd3-us-west.apache.org) with ESMTP id C5750180F3F for ; Mon, 4 Nov 2019 23:19:47 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd3-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -0.001 X-Spam-Level: X-Spam-Status: No, score=-0.001 tagged_above=-999 required=6.31 tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_MESSAGE=0.2, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=disabled Authentication-Results: spamd3-us-west.apache.org (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mx1-ec2-va.apache.org ([10.40.0.8]) by localhost (spamd3-us-west.apache.org [10.40.0.10]) (amavisd-new, port 10024) with ESMTP id EbfvkpmghvfR for ; Mon, 4 Nov 2019 23:19:43 +0000 (UTC) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=209.85.166.195; helo=mail-il1-f195.google.com; envelope-from=manmedia@gmail.com; receiver= Received: from mail-il1-f195.google.com (mail-il1-f195.google.com [209.85.166.195]) by mx1-ec2-va.apache.org (ASF Mail Server at mx1-ec2-va.apache.org) with ESMTPS id E85E6BC55E for ; Mon, 4 Nov 2019 23:19:42 +0000 (UTC) Received: by mail-il1-f195.google.com with SMTP id o18so4278442ils.12 for ; Mon, 04 Nov 2019 15:19:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=nkTEr2A2ZEMrUyWnXD3fwVCP6A52cbXbYJT6ryrewEc=; b=EGdxbQA1rXlsQamyIgHxu2Vwjm8Wot1YDJYnV2i+O6+IM0ScPhSBFSbjdtIQdoH7Mv o/MEkXR0xBN4MT0Z275yPGWVkHeVLXm2J6whIMF35DBvvCjtzUeV2achKOOiZpOemYLc iAPhOjWoBs+XD6yasIk0vvXIwz9aqVanI/ofT4B+aBzHzm9naDPIuousH4/qEzRCmEnD NzvatPpgeLXi2lBUg6UaYWf7lOBs1DpO5xtIe6MzOvnyr2Vv4vVQYFZLbUoAZgkwxVRo ExsSvaG56Y/vsImwojocZkI/Ko/SeaIdEqE19LcElsJnBrG7DioHo/j54DybjTBzB2ro b16g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=nkTEr2A2ZEMrUyWnXD3fwVCP6A52cbXbYJT6ryrewEc=; b=L3wnvYcb3IX/r1Ew5IL4z92/ImP/40ZtbOYiepdZ9g4XT8OFjnSqHqBWJqWueUlZRi TmBxMqhlGwKiQSoOAa1rCo+jRbU3WF8zms6Zfj8OnhbPXJaWvx0K5vXkOAi27jCdwwSb /hJsDr0CsXkbm9/KWD4/5JKaLMViTHA7QrY+b4ubvB/FG57LBDQuri8Y9CLBmW9o3/QT Ur6TV9OQldIlcRdplo5RMi3xSZM5nyXLehOwS8F4wPCaLTNcdWPaJHkvELUKrw+5X4/J 4pZKic7X7nIWNitq2u2UtaNYeaLkr0kfcGtitFGGKpQxtesihKN+eH+IvIGHlY1YdAcE CirQ== X-Gm-Message-State: APjAAAViFgwht14liwYHIL+sXANos2QwZg6NJ3LDpdJJCps/65cSon2o CywI6tsxLpU2ye0XceshoSvTGQZ24CDGR5Cx1bnLPqWp X-Google-Smtp-Source: APXvYqzgvPwf0vbhKTWw6LNBWLyOPXUOsr65xbwWZM/HzkORdl6vDVrfQOLAIUpGCJUtcLdeLkfLwVrqJUrJH/I6mt0= X-Received: by 2002:a92:8c1c:: with SMTP id o28mr29715783ild.34.1572909582049; Mon, 04 Nov 2019 15:19:42 -0800 (PST) MIME-Version: 1.0 References: <420900e0-5097-0881-edea-c9ba175ea99b@apache.org> <9a7fd033-27fc-6ca2-b3e9-56989accf09d@apache.org> <0d006b48-e212-944c-9cfd-2a28c695f496@apache.org> In-Reply-To: From: "M. Manna" Date: Mon, 4 Nov 2019 23:19:30 +0000 Message-ID: Subject: Re: Intermittent JSP Caching/Compiling Issue while under load To: Tomcat Users List Content-Type: multipart/alternative; boundary="000000000000e6e7fc05968d8cf0" --000000000000e6e7fc05968d8cf0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable I=E2=80=99m just trying to understand, is there really a plausible solution= here ? Unless we have loadbalanced tomcat instances, can we truly ever stop such behaviour (or more importantly, does it make sense to do so)? For my use case, We do it in production almost every other day for patching, but we do it on our 60 servers over a duration of 15-20 minutes (and by rolling 1-by-1). That said, this may not be an acceptable delay/solution for others. Also, if it happens to be a critical piece (index.jsp or something more client-faces), you may not be able to wait that long. It=E2=80=99s be good to know what others think. Regards, On Mon, 4 Nov 2019 at 22:55, Alex O'Ree wrote: > Sounds a lot like the issue I reported a few months ago.... > > On Mon, Nov 4, 2019, 3:12 PM Tim K wrote: > > > On Mon, Nov 4, 2019, 10:30 AM Mark Thomas wrote: > > > > > > > > Thanks. That helps as it means the issue should be reproducible on a > > > single, stand-alone instance. > > > > > > Mark > > > > > > > I was able to reproduce this behavior with a single server running a > > vanilla 9.0.21 using the example hello.jsp file... I was hitting the u= rl > > every 0.5 seconds. > > > > > > > > --000000000000e6e7fc05968d8cf0--