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Yang, Tong
3b1f73dece
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>
71 lines
9.6 KiB
HTML
71 lines
9.6 KiB
HTML
<a name="alm_43010"></a><a name="alm_43010"></a>
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<h1 class="topictitle1">ALM-43010 Heap Memory Usage of the JDBCServer Process Exceeds the Threshold</h1>
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<div id="body8662426"><div class="section" id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_section43920869"><h4 class="sectiontitle">Description</h4><p id="alm_43010__en-us_topic_0191813931_p2753395211172">The system checks the JDBCServer process status every 30 seconds. The alarm is generated when the heap memory usage of the JDBCServer process exceeds the threshold (90% of the maximum memory).</p>
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<div class="section" id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_section59743502"><h4 class="sectiontitle">Attribute</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_table64843092" frame="border" border="1" rules="all"><thead align="left"><tr id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_row10409628"><th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.1.4.1.1"><p id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_p37873528">Alarm ID</p>
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<th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.1.4.1.2"><p id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_p47856888">Alarm Severity</p>
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<th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.2.2.1.4.1.3"><p id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_p51202692">Automatically Cleared</p>
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<tbody><tr id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_row53777413"><td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.1 "><p id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_p61003235">43010</p>
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<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.2 "><p id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_p42315013">Major</p>
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<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.2.2.1.4.1.3 "><p id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_p4964052">Yes</p>
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</table>
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<div class="section" id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_section820607"><h4 class="sectiontitle">Parameters</h4>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_table66543927" frame="border" border="1" rules="all"><thead align="left"><tr id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_row61284534"><th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.3.2.1.3.1.1"><p id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_p65100236">Parameter</p>
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<th align="left" class="cellrowborder" valign="top" width="50%" id="mcps1.3.3.2.1.3.1.2"><p id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_p38627770">Description</p>
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<tbody><tr id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_row41841705"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_p33734977">ServiceName</p>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_p48178601">Specifies the service for which the alarm is generated.</p>
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<tr id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_row30954226"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_p24264406">RoleName</p>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_p19259870">Specifies the role for which the alarm is generated.</p>
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</td>
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<tr id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_row39121107"><td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.1 "><p id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_p14693133">HostName</p>
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</td>
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<td class="cellrowborder" valign="top" width="50%" headers="mcps1.3.3.2.1.3.1.2 "><p id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_p49293152">Specifies the host for which the alarm is generated.</p>
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</tr>
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</tbody>
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</table>
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</div>
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<div class="section" id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_section7385465"><h4 class="sectiontitle">Impact on the System</h4><p id="alm_43010__en-us_topic_0191813931_p12695706111730">If the available JDBCServer process heap memory is insufficient, a memory overflow occurs and the service breaks down.</p>
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</div>
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<div class="section" id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_section66469189"><h4 class="sectiontitle">Possible Causes</h4><p id="alm_43010__en-us_topic_0191813931_p17679985111737">The heap memory of the JDBCServer process is overused or the heap memory is inappropriately allocated.</p>
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</div>
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<div class="section" id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_section61351797"><h4 class="sectiontitle">Procedure</h4><ol id="alm_43010__en-us_topic_0191813931_ol20218781175629"><li id="alm_43010__en-us_topic_0191813931_li47751305175629"><span>Check the heap memory usage.</span><p><ol type="a" id="alm_43010__en-us_topic_0191813931_ol17980506181612"><li id="alm_43010__en-us_topic_0191813931_li1487713813414">Go to the cluster details page and choose <strong id="alm_43010__b117443149554656">Alarms</strong>.</li><li id="alm_43010__en-us_topic_0191813931_li58727490181612">Select the alarm whose <strong id="alm_43010__b22004070254656">Alarm ID</strong> is <strong id="alm_43010__b111436497554656">43010</strong> and view the IP address and role name of the instance in <strong id="alm_43010__b126788740654656">Location</strong>.</li><li id="alm_43010__en-us_topic_0191813931_li37461388181615">Choose <strong id="alm_43010__b108551163367">Components</strong> > <strong id="alm_43010__b5855201616364">Spark</strong> > <strong id="alm_43010__b1855816193620">Instance</strong> > <strong id="alm_43010__b118562165368">JDBCServer</strong> (IP address of the instance for which the alarm is generated) > <strong id="alm_43010__b085681620365">Customize</strong> > <strong id="alm_43010__b185614164366">Heap Memory Statistics of the JDBCServer Process</strong>. Click <strong id="alm_43010__b181024385154656">OK</strong> to view the heap memory usage.</li><li id="alm_43010__en-us_topic_0191813931_li5803814181617">Check whether the heap memory usage of JDBCServer has reached the threshold (90% of the maximum heap memory).<ul id="alm_43010__en-us_topic_0191813931_ul2889331181625"><li id="alm_43010__en-us_topic_0191813931_li5345176181624">If yes, go to <a href="#alm_43010__en-us_topic_0191813931_li1011493181634">1.e</a>.</li><li id="alm_43010__en-us_topic_0191813931_li14368473181624">If no, go to <a href="#alm_43010__en-us_topic_0191813931_li572522141314">2</a>.</li></ul>
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</li><li id="alm_43010__en-us_topic_0191813931_li1011493181634"><a name="alm_43010__en-us_topic_0191813931_li1011493181634"></a><a name="en-us_topic_0191813931_li1011493181634"></a>Choose <strong id="alm_43010__b678069654656">Components</strong> > <strong id="alm_43010__b158621221154656">Spark</strong> > <strong id="alm_43010__b128219792554656">Service Configuration</strong>. Set <strong id="alm_43010__b121921239854656">Type</strong> to <strong id="alm_43010__b194299643654656">All</strong> and choose <strong id="alm_43010__b188193969154656">JDBCServer</strong> > <strong id="alm_43010__b152094737054656">Tuning</strong>. Increase the value of the <strong id="alm_43010__b191775829454656">SPARK_DRIVER_MEMORY</strong> parameter as required.</li><li id="alm_43010__en-us_topic_0191813931_li11969688181637">Check whether the alarm is cleared.<ul id="alm_43010__en-us_topic_0191813931_ul51315766181641"><li id="alm_43010__en-us_topic_0191813931_li54070239181641">If yes, no further action is required.</li><li id="alm_43010__en-us_topic_0191813931_li17383192181641">If no, go to <a href="#alm_43010__en-us_topic_0191813931_li572522141314">2</a>.</li></ul>
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</li></ol>
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</p></li><li id="alm_43010__en-us_topic_0191813931_li572522141314"><a name="alm_43010__en-us_topic_0191813931_li572522141314"></a><a name="en-us_topic_0191813931_li572522141314"></a><span>Collect fault information.</span><p><ol type="a" id="alm_43010__en-us_topic_0191813931_en-us_topic_0191813935_ol6089206913036"><li id="alm_43010__en-us_topic_0191813931_en-us_topic_0191813935_li4478836213036">On MRS Manager, choose <span class="menucascade" id="alm_43010__menucascade41051222854656"><b><span class="uicontrol" id="alm_43010__uicontrol42280058754656">System</span></b> > <b><span class="uicontrol" id="alm_43010__uicontrol187407269154656">Export Log</span></b></span>.</li><li id="alm_43010__li18574327401">Contact technical support engineers for help. For details, see <a href="https://docs.otc.t-systems.com/en-us/public/learnmore.html" target="_blank" rel="noopener noreferrer">technical support</a>.</li></ol>
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</p></li></ol>
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<div class="section" id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_section15295265"><h4 class="sectiontitle">Reference</h4><p id="alm_43010__en-us_topic_0191813931_en-us_topic_0087039425_p7510612">None</p>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="mrs_01_0241.html">Alarm Reference (Applicable to Versions Earlier Than MRS 3.x)</a></div>
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