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Yang, Tong
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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>
217 lines
19 KiB
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217 lines
19 KiB
HTML
<a name="mrs_01_0870"></a><a name="mrs_01_0870"></a>
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<h1 class="topictitle1">Yarn Log Overview</h1>
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<div id="body1590130748015"><div class="section" id="mrs_01_0870__sf3c86d271502421c8a42720bc44fede7"><h4 class="sectiontitle">Log Description</h4><p id="mrs_01_0870__en-us_topic_0046736751_p40109162">The default paths for saving Yarn logs are as follows:</p>
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<ul id="mrs_01_0870__en-us_topic_0046736751_ul25438145"><li id="mrs_01_0870__en-us_topic_0046736751_li27616715">ResourceManager: <strong id="mrs_01_0870__b123777203343">/var/log/Bigdata/yarn/rm</strong> (run logs) and <strong id="mrs_01_0870__b2513524103410">/var/log/Bigdata/audit/yarn/rm</strong> (audit logs)</li><li id="mrs_01_0870__en-us_topic_0046736751_li47223851">NodeManager: <strong id="mrs_01_0870__b3291231153418">/var/log/Bigdata/yarn/nm</strong> (run logs) and <strong id="mrs_01_0870__b38021934153410">/var/log/Bigdata/audit/yarn/nm</strong> (audit logs)</li></ul>
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<p id="mrs_01_0870__en-us_topic_0046736751_p22361481">Log archive rule: The automatic compression and archive function is enabled for Yarn logs. By default, when the size of a log file exceeds 50 MB, the log file is automatically compressed. The naming rule of the compressed log file is as follows: <em id="mrs_01_0870__i19826357183"><Original log file name>-<yyyy-mm-dd_hh-mm-ss>.[ID]</em><strong id="mrs_01_0870__b178366614216">.log.zip</strong>. A maximum of 100 latest compressed files are retained. The number of compressed files can be configured on Manager.</p>
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<p id="mrs_01_0870__en-us_topic_0046736751_p66449547"><strong id="mrs_01_0870__en-us_topic_0046736751_b61175018">Log archive rule</strong>:</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="mrs_01_0870__table8170151882515" frame="border" border="1" rules="all"><caption><b>Table 1 </b>Yarn log list</caption><thead align="left"><tr id="mrs_01_0870__row517171810255"><th align="left" class="cellrowborder" valign="top" width="22.53225322532253%" id="mcps1.3.1.6.2.4.1.1"><p id="mrs_01_0870__p117117187253">Log Type</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="44.13441344134414%" id="mcps1.3.1.6.2.4.1.2"><p id="mrs_01_0870__p16171318142512">Log File Name</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="33.33333333333333%" id="mcps1.3.1.6.2.4.1.3"><p id="mrs_01_0870__p1817191810252">Description</p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="mrs_01_0870__row0171141818256"><td class="cellrowborder" rowspan="21" valign="top" width="22.53225322532253%" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p11711118172510">Run log</p>
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</td>
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<td class="cellrowborder" valign="top" width="44.13441344134414%" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p4171131816250">hadoop-<SSH_USER>-<process_name>-<hostname>.log</p>
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</td>
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<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.1.6.2.4.1.3 "><p id="mrs_01_0870__p151713184256">Yarn component log file that records most of the logs generated when the Yarn component is running</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row61711188252"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p101711518112519">hadoop-<SSH_USER>-<process_name>-<hostname>.out</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p1217191811254">Log file that records Yarn running environment information</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row121712018132520"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p19171101812510"><process_name>-<SSH_USER>-<DATE>-<PID>-gc.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p18171101842511">Garbage collection log file</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row81711518132515"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p5171161810257">yarn-haCheck.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p1517214183256">ResourceManager active/standby status detection log file</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row12172101812519"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p1917271816256">yarn-service-check.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p5172111818251">Log file that records the health check details of the Yarn service</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row20172171813252"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p19172201816252">yarn-start-stop.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p181722018192519">Log file that records the startup and stop of the Yarn service</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row1417231819255"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p20172131819252">yarn-prestart.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p31721318112518">Log file that records cluster operations before the Yarn service startup</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row9172161872511"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p121729182258">yarn-postinstall.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p6172518112512">Work log file after installation and before startup of the Yarn service</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row4172518142516"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p617220182252">hadoop-commission.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p121721018132515">Yarn service entry log file</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row117201813256"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p16172111852518">yarn-cleanup.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p2174118102519">Log file that records the cleanup operation during uninstallation of the Yarn service</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row3174201812517"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p111744181255">yarn-refreshqueue.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p3174101817258">Yarn queue refresh log file</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row151749189254"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p15174121814256">upgradeDetail.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p13174191817253">Upgrade log file</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row1017471892515"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p81759189258">stderr/stdin/syslog</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p1717521872520">Container log file of the applications running on the Yarn service</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row14175318112518"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p71755186257">yarn-application-check.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p1317581872512">Check log file of applications running on the Yarn service</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row151751318132510"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p181755189258">yarn-appsummary.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p8175191832512">Running result log file of applications running on the Yarn service</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row117519187259"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p61751118102519">yarn-switch-resourcemanager.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p1517510183259">Run log file that records the Yarn active/standby switchover</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row4175818112518"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p61752018192512">ranger-yarn-plugin-enable.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p817516183250">Log file that records the enabling of Ranger authentication for Yarn</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row18175718202514"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p3175101818251">yarn-nodemanager-period-check.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p17176818142515">Periodic check log of Yarn NodeManager</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row2017641812514"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p31761418142512">yarn-resourcemanager-period-check.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p16176181819258">Periodic check log of Yarn ResourceManager</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row14176161818252"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p01761118152518">hadoop.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p17176181819255">Hadoop client logs</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row8176191852515"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p7176718152516">env.log</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p0176151822519">Environment information log file before the instance is started or stopped.</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row17176618132520"><td class="cellrowborder" rowspan="2" valign="top" width="22.53225322532253%" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p017621819253">Audit logs</p>
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</td>
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<td class="cellrowborder" valign="top" width="44.13441344134414%" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p5176131813258">yarn-audit-<process_name>.log</p>
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<p id="mrs_01_0870__p18176131816252">ranger-plugin-audit.log</p>
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</td>
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<td class="cellrowborder" valign="top" width="33.33333333333333%" headers="mcps1.3.1.6.2.4.1.3 "><p id="mrs_01_0870__p181761918142520">Yarn operation audit log file</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__row1917619187255"><td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.1 "><p id="mrs_01_0870__p617618186254">SecurityAuth.audit</p>
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</td>
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<td class="cellrowborder" valign="top" headers="mcps1.3.1.6.2.4.1.2 "><p id="mrs_01_0870__p517601813255">Yarn security audit log file</p>
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</td>
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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>
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<div class="section" id="mrs_01_0870__section7279202416598"><h4 class="sectiontitle">Log Level</h4><p id="mrs_01_0870__en-us_topic_0046736751_p20769304"><a href="#mrs_01_0870__t2815fd56171e4fc792972303da85d63c">Table 2</a> describes the log levels supported by Yarn, including OFF, FATAL, ERROR, WARN, INFO, and DEBUG, from high priority to low. Logs whose levels are higher than or equal to the specified level are printed. The number of printed logs decreases as the specified log level increases.</p>
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<div class="tablenoborder"><a name="mrs_01_0870__t2815fd56171e4fc792972303da85d63c"></a><a name="t2815fd56171e4fc792972303da85d63c"></a><table cellpadding="4" cellspacing="0" summary="" id="mrs_01_0870__t2815fd56171e4fc792972303da85d63c" frame="border" border="1" rules="all"><caption><b>Table 2 </b>Log levels</caption><thead align="left"><tr id="mrs_01_0870__en-us_topic_0046736751_row8098199"><th align="left" class="cellrowborder" valign="top" width="31.31%" id="mcps1.3.2.3.2.3.1.1"><p id="mrs_01_0870__en-us_topic_0046736751_p51974374">Level</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="68.69%" id="mcps1.3.2.3.2.3.1.2"><p id="mrs_01_0870__en-us_topic_0046736751_p39919932">Description</p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="mrs_01_0870__en-us_topic_0046736751_row43492568"><td class="cellrowborder" valign="top" width="31.31%" headers="mcps1.3.2.3.2.3.1.1 "><p id="mrs_01_0870__en-us_topic_0046736751_p33237081">FATAL</p>
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</td>
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<td class="cellrowborder" valign="top" width="68.69%" headers="mcps1.3.2.3.2.3.1.2 "><p id="mrs_01_0870__en-us_topic_0046736751_p7849035">Logs of this level record critical error information about the current event processing.</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__en-us_topic_0046736751_row3532453"><td class="cellrowborder" valign="top" width="31.31%" headers="mcps1.3.2.3.2.3.1.1 "><p id="mrs_01_0870__en-us_topic_0046736751_p17693315">ERROR</p>
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</td>
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<td class="cellrowborder" valign="top" width="68.69%" headers="mcps1.3.2.3.2.3.1.2 "><p id="mrs_01_0870__en-us_topic_0046736751_p23872421">Logs of this level record error information about the current event processing.</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__en-us_topic_0046736751_row13525204"><td class="cellrowborder" valign="top" width="31.31%" headers="mcps1.3.2.3.2.3.1.1 "><p id="mrs_01_0870__en-us_topic_0046736751_p21799703">WARN</p>
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</td>
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<td class="cellrowborder" valign="top" width="68.69%" headers="mcps1.3.2.3.2.3.1.2 "><p id="mrs_01_0870__en-us_topic_0046736751_p20945556">Logs of this level record exception information about the current event processing.</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__en-us_topic_0046736751_row54292279"><td class="cellrowborder" valign="top" width="31.31%" headers="mcps1.3.2.3.2.3.1.1 "><p id="mrs_01_0870__en-us_topic_0046736751_p35598459">INFO</p>
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</td>
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<td class="cellrowborder" valign="top" width="68.69%" headers="mcps1.3.2.3.2.3.1.2 "><p id="mrs_01_0870__en-us_topic_0046736751_p64902924">Logs of this level record normal running status information about the system and events.</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__en-us_topic_0046736751_row47255404"><td class="cellrowborder" valign="top" width="31.31%" headers="mcps1.3.2.3.2.3.1.1 "><p id="mrs_01_0870__en-us_topic_0046736751_p2482522">DEBUG</p>
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</td>
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<td class="cellrowborder" valign="top" width="68.69%" headers="mcps1.3.2.3.2.3.1.2 "><p id="mrs_01_0870__en-us_topic_0046736751_p66866633">Logs of this level record the system as well as system debugging information.</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p id="mrs_01_0870__en-us_topic_0046736751_p52818429">To modify log levels, perform the following operations:</p>
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<ol id="mrs_01_0870__en-us_topic_0046736751_ol5603813"><li id="mrs_01_0870__li176831283145"><span>Go to the <strong id="mrs_01_0870__b17516164515918">All Configurations</strong> page of the Yarn service by referring to <a href="mrs_01_2125.html">Modifying Cluster Service Configuration Parameters</a>.</span></li><li id="mrs_01_0870__en-us_topic_0046736751_li58069522"><span>On the menu bar on the left, select the log menu of the target role.</span></li><li id="mrs_01_0870__en-us_topic_0046736751_li52863658"><span>Select a desired log level.</span></li><li id="mrs_01_0870__en-us_topic_0046736751_li6010880"><span>Click <strong id="mrs_01_0870__b15405114112585">Save Configuration</strong>. In the dialog box that is displayed, click <strong id="mrs_01_0870__b8410741195810">OK</strong> to make the setting take effect.</span><p><div class="note" id="mrs_01_0870__note196127155619"><img src="public_sys-resources/note_3.0-en-us.png"><span class="notetitle"> </span><div class="notebody"><p class="text" id="mrs_01_0870__p2611745616">The configurations take effect immediately without the need to restart the service.</p>
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</div></div>
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</p></li></ol>
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</div>
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<div class="section" id="mrs_01_0870__s94f44b40e7c045afa391657cae3fc22a"><h4 class="sectiontitle">Log Format</h4><p id="mrs_01_0870__en-us_topic_0046736751_p44484625">The following table lists the Yarn log formats.</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" id="mrs_01_0870__en-us_topic_0046736751_table64817308" frame="border" border="1" rules="all"><caption><b>Table 3 </b>Log formats</caption><thead align="left"><tr id="mrs_01_0870__en-us_topic_0046736751_row51362281"><th align="left" class="cellrowborder" valign="top" width="24.490000000000002%" id="mcps1.3.3.3.2.4.1.1"><p id="mrs_01_0870__en-us_topic_0046736751_p66704062">Log Type</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="38.78%" id="mcps1.3.3.3.2.4.1.2"><p id="mrs_01_0870__en-us_topic_0046736751_p40443822">Format</p>
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</th>
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<th align="left" class="cellrowborder" valign="top" width="36.730000000000004%" id="mcps1.3.3.3.2.4.1.3"><p id="mrs_01_0870__en-us_topic_0046736751_p22755592">Example</p>
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</th>
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</tr>
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</thead>
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<tbody><tr id="mrs_01_0870__en-us_topic_0046736751_row12937662"><td class="cellrowborder" valign="top" width="24.490000000000002%" headers="mcps1.3.3.3.2.4.1.1 "><p id="mrs_01_0870__en-us_topic_0046736751_p41317711">Run log</p>
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</td>
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<td class="cellrowborder" valign="top" width="38.78%" headers="mcps1.3.3.3.2.4.1.2 "><p id="mrs_01_0870__en-us_topic_0046736751_p58400296"><yyyy-MM-dd HH:mm:ss,SSS>|<Log Level>|<<em id="mrs_01_0870__i64405010119">Thread that generates the log</em>>|<<em id="mrs_01_0870__i144814013114">Message in the log</em>>|<<em id="mrs_01_0870__i344917013117">Location of the log event</em>></p>
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</td>
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<td class="cellrowborder" valign="top" width="36.730000000000004%" headers="mcps1.3.3.3.2.4.1.3 "><p id="mrs_01_0870__en-us_topic_0046736751_p32803570">2014-09-26 14:18:59,109 | INFO | main | Client environment:java.compiler=<NA> | org.apache.zookeeper.Environment.logEnv(Environment.java:100)</p>
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</td>
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</tr>
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<tr id="mrs_01_0870__en-us_topic_0046736751_row26796681"><td class="cellrowborder" valign="top" width="24.490000000000002%" headers="mcps1.3.3.3.2.4.1.1 "><p id="mrs_01_0870__en-us_topic_0046736751_p23047551">Audit log</p>
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</td>
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<td class="cellrowborder" valign="top" width="38.78%" headers="mcps1.3.3.3.2.4.1.2 "><p id="mrs_01_0870__en-us_topic_0046736751_p54912313"><yyyy-MM-dd HH:mm:ss,SSS>|<Log Level>|<<em id="mrs_01_0870__i17265629327">Thread that generates the log</em>>|<<em id="mrs_01_0870__i22714291124">Message in the log</em>>|<<em id="mrs_01_0870__i152717291621">Location of the log event</em>></p>
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</td>
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<td class="cellrowborder" valign="top" width="36.730000000000004%" headers="mcps1.3.3.3.2.4.1.3 "><p id="mrs_01_0870__en-us_topic_0046736751_p18712351">2014-09-26 14:24:43,605 | INFO | main-EventThread | USER=omm OPERATION=refreshAdminAcls TARGET=AdminService RESULT=SUCCESS | org.apache.hadoop.yarn.server.resourcemanager.RMAuditLogger$LogLevel$6.printLog(RMAuditLogger.java:91)</p>
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</td>
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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>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="mrs_01_0851.html">Using Yarn</a></div>
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</div>
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</div>
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