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Change-Id: I07d56463939fe152c1c6124cc0ad5591337bad6b Reviewed-on: http://gerrit.cloudera.org:8080/6179 Reviewed-by: Ambreen Kazi <ambreen.kazi@cloudera.com> Tested-by: Impala Public Jenkins Reviewed-by: John Russell <jrussell@cloudera.com>
78 lines
3.1 KiB
XML
78 lines
3.1 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!--
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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-->
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<!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept id="admin">
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<title>Impala Administration</title>
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<titlealts audience="PDF"><navtitle>Administration</navtitle></titlealts>
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<prolog>
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<metadata>
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<data name="Category" value="Impala"/>
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<data name="Category" value="Administrators"/>
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<!-- Although there is a reasonable amount of info on the page, it could be better to use wiki-style embedding instead of linking hither and thither. -->
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<data name="Category" value="Stub Pages"/>
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</metadata>
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</prolog>
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<conbody>
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<p>
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As an administrator, you monitor Impala's use of resources and take action when necessary to keep Impala
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running smoothly and avoid conflicts with other Hadoop components running on the same cluster. When you
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detect that an issue has happened or could happen in the future, you reconfigure Impala or other components
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such as HDFS or even the hardware of the cluster itself to resolve or avoid problems.
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</p>
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<p outputclass="toc"/>
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<p>
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<b>Related tasks:</b>
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</p>
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<p>
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As an administrator, you can expect to perform installation, upgrade, and configuration tasks for Impala on
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all machines in a cluster. See <xref href="impala_install.xml#install"/>,
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<xref href="impala_upgrading.xml#upgrading"/>, and <xref href="impala_config.xml#config"/> for details.
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</p>
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<p>
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For security tasks typically performed by administrators, see <xref href="impala_security.xml#security"/>.
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</p>
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<p>
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Administrators also decide how to allocate cluster resources so that all Hadoop components can run smoothly
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together. For Impala, this task primarily involves:
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<ul>
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<li>
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Deciding how many Impala queries can run concurrently and with how much memory, through the admission
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control feature. See <xref href="impala_admission.xml#admission_control"/> for details.
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</li>
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<li>
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Dividing cluster resources such as memory between Impala and other components, using YARN for overall
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resource management, and Llama to mediate resource requests from Impala to YARN. See
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<xref href="impala_resource_management.xml#resource_management"/> for details.
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</li>
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</ul>
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</p>
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</conbody>
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</concept>
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