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doc-exports/docs/mrs/umn/ALM-45003.html
Yang, Tong 5914b67d13 MRS UMN Doc 20240802 version 
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: Yang, Tong <yangtong2@huawei.com>
Co-committed-by: Yang, Tong <yangtong2@huawei.com>
2024-09-28 19:04:58 +00:00

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<a name="ALM-45003"></a><a name="ALM-45003"></a>
<h1 class="topictitle1">ALM-45003 HetuEngine QAS Disk Capacity Is Insufficient</h1>
<div id="body0000001971621298"><p id="ALM-45003__p12261122253615">This section applies to MRS 3.3.0 or later.</p>
<div class="section" id="ALM-45003__section38830555"><h4 class="sectiontitle"><span id="ALM-45003__text19212234396">Alarm Description</span></h4><p id="ALM-45003__p61215157">The system checks the HetuEngine QAS disk usage every 60 seconds and compares the actual disk usage with the threshold. The disk usage has a default threshold. This alarm is generated if the disk usage exceeds the threshold.</p>
<p id="ALM-45003__p14065507">To change the threshold, choose <strong id="ALM-45003__b1490134013289">O&amp;M</strong> &gt; <strong id="ALM-45003__b16743124210283">Alarm</strong> &gt; <strong id="ALM-45003__b124013454285">Thresholds</strong>. In the service list, choose <strong id="ALM-45003__b15641525153414">HetuEngine</strong> &gt; <strong id="ALM-45003__b634772863417">Disk</strong> &gt; <strong id="ALM-45003__b1669241615342">QAS Disk Usage (QAS)</strong>.</p>
<p id="ALM-45003__p59480702">If the <strong id="ALM-45003__b18138184493119">Trigger Count</strong> is <strong id="ALM-45003__b14138114453111">1</strong>, this alarm is cleared when the usage of the HetuEngine QAS disk is less than or equal to the threshold. If the <strong id="ALM-45003__b813804433116">Trigger Count</strong> is greater than <strong id="ALM-45003__b81381644163112">1</strong>, this alarm is cleared when the disk usage is less than or equal to 80% of the threshold.</p>
</div>
<div class="section" id="ALM-45003__section13930683"><h4 class="sectiontitle"><span id="ALM-45003__text1568221154719">Alarm Attributes</span></h4>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="ALM-45003__table53207527" frame="border" border="1" rules="all"><thead align="left"><tr id="ALM-45003__row5975028"><th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.3.2.1.4.1.1"><p id="ALM-45003__p14215279"><span id="ALM-45003__text7326193625810">Alarm ID</span></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.3.2.1.4.1.2"><p id="ALM-45003__p10586963"><span id="ALM-45003__text88707444586">Alarm Severity</span></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.3.2.1.4.1.3"><p id="ALM-45003__p52237638"><span id="ALM-45003__text20302185317581">Auto Cleared</span></p>
</th>
</tr>
</thead>
<tbody><tr id="ALM-45003__row3390323"><td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.3.2.1.4.1.1 "><p id="ALM-45003__p6180736">45003</p>
</td>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.3.2.1.4.1.2 "><p id="ALM-45003__p30877589">Major</p>
</td>
<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.3.2.1.4.1.3 "><p id="ALM-45003__p18056795">Yes</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="section" id="ALM-45003__section58267284"><h4 class="sectiontitle"><span id="ALM-45003__text156858325471">Alarm Parameters</span></h4>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="ALM-45003__table53314297" frame="border" border="1" rules="all"><thead align="left"><tr id="ALM-45003__row12062690"><th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.4.2.1.3.1.1"><p id="ALM-45003__p37553849"><span id="ALM-45003__text8840132255920">Parameter</span></p>
</th>
<th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.4.2.1.3.1.2"><p id="ALM-45003__p21962957"><span id="ALM-45003__text55455293594">Description</span></p>
</th>
</tr>
</thead>
<tbody><tr id="ALM-45003__row04245146811"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.4.2.1.3.1.1 "><p id="ALM-45003__p17935380415">Source</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.4.2.1.3.1.2 "><p id="ALM-45003__p187931338134115">Specifies the cluster for which the alarm is generated.</p>
</td>
</tr>
<tr id="ALM-45003__row34169093"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.4.2.1.3.1.1 "><p id="ALM-45003__p41293795">ServiceName</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.4.2.1.3.1.2 "><p id="ALM-45003__p39817731">Specifies the service for which the alarm is generated.</p>
</td>
</tr>
<tr id="ALM-45003__row22815263"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.4.2.1.3.1.1 "><p id="ALM-45003__p23892775">RoleName</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.4.2.1.3.1.2 "><p id="ALM-45003__p38175373">Specifies the role for which the alarm is generated.</p>
</td>
</tr>
<tr id="ALM-45003__row8034041"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.4.2.1.3.1.1 "><p id="ALM-45003__p14847206">HostName</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.4.2.1.3.1.2 "><p id="ALM-45003__p30890924">Specifies the host for which the alarm is generated.</p>
</td>
</tr>
<tr id="ALM-45003__row9582866"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.4.2.1.3.1.1 "><p id="ALM-45003__p38014704">PartitionName</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.4.2.1.3.1.2 "><p id="ALM-45003__p59292158">Specifies the disk partition for which the alarm is generated.</p>
</td>
</tr>
<tr id="ALM-45003__row63867374"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.4.2.1.3.1.1 "><p id="ALM-45003__p5874824">Trigger Condition</p>
</td>
<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.4.2.1.3.1.2 "><p id="ALM-45003__p6098726">Specifies the threshold for triggering the alarm.</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="section" id="ALM-45003__section54643513"><h4 class="sectiontitle"><span id="ALM-45003__text425161010595">Impact on the System</span></h4><p id="ALM-45003__p24234801">If the disk capacity is insufficient, QAS fails to write data, affecting SQL diagnosis and automatic recommendation of materialized views.</p>
</div>
<div class="section" id="ALM-45003__section22029569"><h4 class="sectiontitle"><span id="ALM-45003__text163478464119">Possible Causes</span></h4><ul id="ALM-45003__ul16861840"><li id="ALM-45003__li192121459141719">The alarm threshold is improperly configured.</li><li id="ALM-45003__li17538835">The configuration of the HetuEngine QAS disk cannot meet service requirements. The disk usage reaches the upper limit.</li></ul>
</div>
<div class="section" id="ALM-45003__section64048399"><h4 class="sectiontitle"><span id="ALM-45003__text331117561911">Handling Procedure</span></h4><p id="ALM-45003__p1370412232213"><strong id="ALM-45003__b1611263713220">Check whether the threshold is set properly.</strong></p>
<ol id="ALM-45003__ol16743111171010"><li id="ALM-45003__li158343817111"><span>Log in to FusionInsight Manager and choose <strong id="ALM-45003__b629585963617">O&amp;M</strong> &gt; <strong id="ALM-45003__b021620753716">Alarm</strong> &gt; <strong id="ALM-45003__b1533494375">Thresholds</strong>. In the service list, choose <strong id="ALM-45003__b13588141913375">HetuEngine</strong> &gt; <strong id="ALM-45003__b7743621153718">Disk</strong> &gt; <strong id="ALM-45003__b454913288375">QAS Disk Usage (QAS)</strong>. Check whether the alarm threshold is set properly. The default threshold is 80% of the disk capacity. You can change the threshold as required.</span><p><ul id="ALM-45003__ul1468718191916"><li id="ALM-45003__li156879194119">If the threshold is set properly, go to <a href="#ALM-45003__li1561212104442">4</a>.</li><li id="ALM-45003__li3496112119111">If the threshold is not set properly, go to <a href="#ALM-45003__li1673781151015">2</a>.</li></ul>
</p></li><li id="ALM-45003__li1673781151015"><a name="ALM-45003__li1673781151015"></a><a name="li1673781151015"></a><span>Click <strong id="ALM-45003__b21646515443">Modify</strong> in the <strong id="ALM-45003__b38393714446">Operation</strong> column to modify and save the alarm threshold as required.</span></li><li id="ALM-45003__li18737111110109"><span>Wait 2 minutes and check whether the alarm is cleared.</span><p><ul id="ALM-45003__ul1075412355913"><li id="ALM-45003__li1499044611910">If the alarm is cleared, no further action is required.</li><li id="ALM-45003__li1880155018910">If the alarm is not cleared, go to <a href="#ALM-45003__li1561212104442">4</a>.</li></ul>
</p></li></ol>
<p id="ALM-45003__p7788411192919"><strong id="ALM-45003__b215915391443">Check whether the disk usage reaches the upper limit.</strong></p>
<ol start="4" id="ALM-45003__ol92781418143311"><li id="ALM-45003__li1561212104442"><a name="ALM-45003__li1561212104442"></a><a name="li1561212104442"></a><span>Expand the alarm information, view the information in the <strong id="ALM-45003__b1752601204517">Location</strong> area, and check the role name and host name of the QAS disk where the alarm is generated.</span></li><li id="ALM-45003__li827841815332"><span>Choose <strong id="ALM-45003__b1184275834613">Cluster</strong> &gt; <strong id="ALM-45003__b37818119473">Services</strong> &gt; <strong id="ALM-45003__b1179871944716">HetuEngine</strong> and click <strong id="ALM-45003__b10874109124813">Instance</strong>. On the displayed page, click the QAS role name in the alarm information. On the instance page that is displayed, click <strong id="ALM-45003__b17263193134815">Chart</strong> and check whether the QAS disk usage in the <strong id="ALM-45003__b1446063984812">QAS Disk Usage</strong> chart exceeds the threshold (80% of the disk capacity by default).</span><p><ul id="ALM-45003__ul169016288390"><li id="ALM-45003__li9690828173912">If the disk usage reaches the upper limit, go to <a href="#ALM-45003__li1266819163911">6</a>.</li><li id="ALM-45003__li83115360398">If the disk usage does not reaches the upper limit, go to <a href="#ALM-45003__li1573581113104">9</a>.</li></ul>
</p></li><li id="ALM-45003__li1266819163911"><a name="ALM-45003__li1266819163911"></a><a name="li1266819163911"></a><span>Log in to the host of the node where the QAS instance reporting the alarm is located as the <strong id="ALM-45003__b7393153204518">root</strong> user.</span></li><li id="ALM-45003__li6148329204513"><span>Run the following command to go to the QAS data directory and delete temporary files as required:</span><p><p id="ALM-45003__p211612494811"><strong id="ALM-45003__b9986427104815">cd ${BIGDATA_DATA_HOME}/hetuengine/qas</strong></p>
<div class="notice" id="ALM-45003__note53085191806"><span class="noticetitle"><img src="public_sys-resources/notice_3.0-en-us.png"> </span><div class="noticebody"><p id="ALM-45003__p1324112161719">Deleting temporary files affects the latest QAS execution result but does not affect subsequent results.</p>
</div></div>
</p></li><li id="ALM-45003__li710418358470"><span>Wait 2 minutes and check whether the alarm is cleared.</span><p><ul id="ALM-45003__ul10362933114819"><li id="ALM-45003__li1136263316485">If the alarm is cleared, no further action is required.</li><li id="ALM-45003__li920194020481">If the alarm fails to be cleared, go to <a href="#ALM-45003__li1573581113104">9</a>.</li></ul>
</p></li></ol>
<p id="ALM-45003__p585083316916"><strong id="ALM-45003__b1769051635110">Collect fault information.</strong></p>
<ol start="9" id="ALM-45003__ol87351411121012"><li id="ALM-45003__li1573581113104"><a name="ALM-45003__li1573581113104"></a><a name="li1573581113104"></a><span>On FusionInsight Manager, choose <strong id="ALM-45003__b1616717232516">O&amp;M</strong>. In the navigation pane on the left, choose <strong id="ALM-45003__b1316872365110">Log</strong> &gt; <strong id="ALM-45003__b1617092312515">Download</strong>.</span></li><li id="ALM-45003__li1873531161013"><span>Expand the <strong id="ALM-45003__b1918462885112">Service</strong> drop-down list, select <strong id="ALM-45003__b1718514288511">HetuEngine</strong> for the target cluster, and click <strong id="ALM-45003__b141879281514">OK</strong>.</span></li><li id="ALM-45003__li6421753013"><span>Expand the <strong id="ALM-45003__b1152119467515">Hosts</strong> drop-down list. In the <strong id="ALM-45003__b2523114618512">Select Host</strong> dialog box that is displayed, select the hosts to which the role belongs, and click <strong id="ALM-45003__b352411466511">OK</strong>.</span></li><li id="ALM-45003__li137359114102"><span>Click the edit icon in the upper right corner, and set <strong id="ALM-45003__b122381351115113">Start Date</strong> and <strong id="ALM-45003__b12241205185111">End Date</strong> for log collection to 10 minutes ahead of and after the alarm generation time, respectively. Then, click <strong id="ALM-45003__b18242205155114">Download</strong>.</span></li><li id="ALM-45003__li07351311121012"><span>Contact <span id="ALM-45003__text13121185435113">O&amp;M personnel</span> and provide the collected logs.</span></li></ol>
</div>
<div class="section" id="ALM-45003__section169311343318"><h4 class="sectiontitle"><span id="ALM-45003__text10274168326">Alarm Clearance</span></h4><p id="ALM-45003__p754913417333">This alarm is automatically cleared after the fault is rectified.</p>
</div>
<div class="section" id="ALM-45003__section39564683"><h4 class="sectiontitle"><span id="ALM-45003__text44238205212">Related Information</span></h4><p id="ALM-45003__p179052433154"><span id="ALM-45003__text1997020518156">None.</span></p>
</div>
</div>
<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="mrs_01_1298.html">Alarm Reference (Applicable to MRS 3.x)</a></div>
</div>
</div>
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