Yang, Tong 6182f91ba8 MRS component operation guide_normal 2.0.38.SP20 version
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
Co-authored-by: Yang, Tong <yangtong2@huawei.com>
Co-committed-by: Yang, Tong <yangtong2@huawei.com>
2022-12-09 14:55:21 +00:00

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<h1 class="topictitle1">Error Occurs When a User Switches to the Tez Web UI</h1>
<div id="body1594690812822"><div class="section" id="mrs_01_2074__s66e76ef6dd73479398655c776116bb7b"><h4 class="sectiontitle">Question</h4><p id="mrs_01_2074__a162942e7b78a40e7a94c13433cbea0ef">When a user logs in to Manager and switches to the Tez web UI, error 404 or 503 is displayed.</p>
<p id="mrs_01_2074__p46636317341"><span><img id="mrs_01_2074__image9222121453419" src="en-us_image_0000001389429344.png"></span></p>
<p id="mrs_01_2074__p182450375149"><span><img id="mrs_01_2074__image24201234160" src="en-us_image_0000001388394084.png"></span></p>
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<div class="section" id="mrs_01_2074__sa92aab5ff63e42d291e3b90f1d277e51"><h4 class="sectiontitle">Answer</h4><p id="mrs_01_2074__a6c0d011832ce43738e5e1349d8253b18">The Tez web UI depends on the TimelineServer instance of Yarn. Therefore, TimelineServer must be installed in advance and in the <strong id="mrs_01_2074__b1754290415112657">Good</strong> state.</p>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="mrs_01_2072.html">Common Issues</a></div>
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