forked from docs/doc-exports
Yang, Tong
6182f91ba8
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>
17 lines
1.4 KiB
HTML
17 lines
1.4 KiB
HTML
<a name="mrs_01_1649"></a><a name="mrs_01_1649"></a>
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<h1 class="topictitle1">When does the RegionServers listed under "Dead Region Servers" on HMaster WebUI gets cleared?</h1>
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<div id="body1596003894354"><div class="section" id="mrs_01_1649__s7e42ea5431574665b0835db73f2371b3"><h4 class="sectiontitle">Question</h4><p id="mrs_01_1649__a590d4d661c73438583c88930b629d741">When does the RegionServers listed under "Dead Region Servers" on HMaster WebUI gets cleared?</p>
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<div class="section" id="mrs_01_1649__s4e966fecbb3e448cbb901cb3a42e79af"><h4 class="sectiontitle">Answer</h4><p id="mrs_01_1649__a37cc85488c6d4fbf885bb360da1b6417">When an online RegionServer goes down abruptly, it is displayed under "Dead Region Servers" in the HMaster WebUI. When dead RegionServer restarts and reports back to HMaster successfully, the "Dead Region Servers" in the HMaster WebUI gets cleared.</p>
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<p id="mrs_01_1649__a16bf85bd1a55428c9a97c978c5beef98">The "Dead Region Servers" is also gets cleared, when the HMaster failover operation is performed successfully.</p>
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<p id="mrs_01_1649__aef145f2e28b44612b9e4905a0f753af4">In cases when an Active HMaster hosting some regions is abruptly killed, Backup HMaster will become the new Active HMater and displays previous Active HMaster as dead RegionServer.</p>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="mrs_01_1638.html">Common Issues About HBase</a></div>
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