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These are refugees from doc_prototype. They can be rendered with the DITA Open Toolkit version 2.3.3 by: /tmp/dita-ot-2.3.3/bin/dita \ -i impala.ditamap \ -f html5 \ -o $(mktemp -d) \ -filter impala_html.ditaval Change-Id: I8861e99adc446f659a04463ca78c79200669484f Reviewed-on: http://gerrit.cloudera.org:8080/5014 Reviewed-by: John Russell <jrussell@cloudera.com> Tested-by: John Russell <jrussell@cloudera.com>
379 lines
13 KiB
XML
379 lines
13 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept id="upgrading">
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<title>Upgrading Impala</title>
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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="Upgrading"/>
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<data name="Category" value="Administrators"/>
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</metadata>
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</prolog>
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<conbody>
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<p>
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Upgrading Impala involves stopping Impala services, using your operating system's package management
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tool to upgrade Impala to the latest version, and then restarting Impala services.
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</p>
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<note>
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<ul>
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<li>
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Each version of CDH 5 has an associated version of Impala, When you upgrade from CDH 4 to CDH 5, you get
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whichever version of Impala comes with the associated level of CDH. Depending on the version of Impala
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you were running on CDH 4, this could install a lower level of Impala on CDH 5. For example, if you
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upgrade to CDH 5.0 from CDH 4 plus Impala 1.4, the CDH 5.0 installation comes with Impala 1.3. Always
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check the associated level of Impala before upgrading to a specific version of CDH 5. Where practical,
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upgrade from CDH 4 to the latest CDH 5, which also has the latest Impala.
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</li>
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<li rev="ver">
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When you upgrade Impala, also upgrade Cloudera Manager if necessary:
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<ul>
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<li>
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Users running Impala on CDH 5 must upgrade to Cloudera Manager 5.0.0 or higher.
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</li>
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<li>
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Users running Impala on CDH 4 must upgrade to Cloudera Manager 4.8 or higher. Cloudera Manager 4.8
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includes management support for the Impala catalog service, and is the minimum Cloudera Manager
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version you can use.
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</li>
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<li>
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Cloudera Manager is continually updated with configuration settings for features introduced in the
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latest Impala releases.
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</li>
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</ul>
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</li>
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<li>
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If you are upgrading from CDH 5 beta to CDH 5.0 production, make sure you are using the appropriate CDH 5
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repositories shown on the
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<!-- Original URL: http://www.cloudera.com/content/cloudera-content/cloudera-docs/CDH5/latest/CDH-Version-and-Packaging-Information/CDH-Version-and-Packaging-Information.html -->
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<xref href="http://www.cloudera.com/documentation/enterprise/latest/topics/rg_vd.html" scope="external" format="html">CDH
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version and packaging</xref> page, then follow the procedures throughout the rest of this section.
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</li>
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<li>
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Every time you upgrade to a new major or minor Impala release, see
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<xref href="impala_incompatible_changes.xml#incompatible_changes"/> in the <cite>Release Notes</cite> for
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any changes needed in your source code, startup scripts, and so on.
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</li>
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<li>
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Also check <xref href="impala_known_issues.xml#known_issues"/> in the <cite>Release Notes</cite> for any
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issues or limitations that require workarounds.
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</li>
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</ul>
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</note>
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<p outputclass="toc inpage"/>
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</conbody>
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<concept id="upgrade_cm_parcels">
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<title>Upgrading Impala through Cloudera Manager - Parcels</title>
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<prolog>
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<metadata>
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<data name="Category" value="Cloudera Manager"/>
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<data name="Category" value="Parcels"/>
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</metadata>
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</prolog>
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<conbody>
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<p>
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Parcels are an alternative binary distribution format available in Cloudera Manager 4.5 and higher.
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</p>
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<note type="important">
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In CDH 5, there is not a separate Impala parcel; Impala is part of the main CDH 5 parcel. Each level of CDH
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5 has a corresponding version of Impala, and you upgrade Impala by upgrading CDH. See the
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<xref href="http://www.cloudera.com/documentation/enterprise/latest/topics/cm_mc_upgrading_cdh.html" scope="external" format="html">CDH
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5 upgrade instructions</xref> and choose the instructions for parcels. The remainder of this section only covers parcel upgrades for
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Impala under CDH 4.
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</note>
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<p>
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To upgrade Impala for CDH 4 in a Cloudera Managed environment, using parcels:
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</p>
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<ol>
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<li>
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<p>
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If you originally installed using packages and now are switching to parcels, remove all the
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Impala-related packages first. You can check which packages are installed using one of the following
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commands, depending on your operating system:
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</p>
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<codeblock>rpm -qa # RHEL, Oracle Linux, CentOS, Debian
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dpkg --get-selections # Debian</codeblock>
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and then remove the packages using one of the following commands:
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<codeblock>sudo yum remove <varname>pkg_names</varname> # RHEL, Oracle Linux, CentOS
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sudo zypper remove <varname>pkg_names</varname> # SLES
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sudo apt-get purge <varname>pkg_names</varname> # Ubuntu, Debian</codeblock>
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</li>
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<li>
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<p>
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Connect to the Cloudera Manager Admin Console.
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</p>
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</li>
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<li>
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<p>
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Go to the <menucascade><uicontrol>Hosts</uicontrol><uicontrol>Parcels</uicontrol></menucascade> tab.
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You should see a parcel with a newer version of Impala that you can upgrade to.
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</p>
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</li>
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<li>
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<p>
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Click <uicontrol>Download</uicontrol>, then <uicontrol>Distribute</uicontrol>. (The button changes as
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each step completes.)
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</p>
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</li>
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<li>
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<p>
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Click <uicontrol>Activate</uicontrol>.
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</p>
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</li>
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<li>
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<p>
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When prompted, click <uicontrol>Restart</uicontrol> to restart the Impala service.
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</p>
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</li>
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</ol>
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</conbody>
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</concept>
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<concept id="upgrade_cm_pkgs">
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<title>Upgrading Impala through Cloudera Manager - Packages</title>
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<prolog>
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<metadata>
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<data name="Category" value="Packages"/>
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<data name="Category" value="Cloudera Manager"/>
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</metadata>
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</prolog>
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<conbody>
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<p>
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To upgrade Impala in a Cloudera Managed environment, using packages:
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</p>
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<ol>
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<li>
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Connect to the Cloudera Manager Admin Console.
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</li>
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<li>
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In the <b>Services</b> tab, click the <b>Impala</b> service.
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</li>
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<li>
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Click <b>Actions</b> and click <b>Stop</b>.
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</li>
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<li>
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Use <b>one</b> of the following sets of commands to update Impala on each Impala node in your cluster:
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<p>
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<b>For RHEL, Oracle Linux, or CentOS systems:</b>
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</p>
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<codeblock rev="1.2">$ sudo yum update impala
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$ sudo yum update hadoop-lzo-cdh4 # Optional; if this package is already installed
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</codeblock>
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<p>
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<b>For SUSE systems:</b>
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</p>
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<codeblock rev="1.2">$ sudo zypper update impala
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$ sudo zypper update hadoop-lzo-cdh4 # Optional; if this package is already installed
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</codeblock>
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<p>
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<b>For Debian or Ubuntu systems:</b>
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</p>
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<codeblock rev="1.2">$ sudo apt-get install impala
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$ sudo apt-get install hadoop-lzo-cdh4 # Optional; if this package is already installed
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</codeblock>
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</li>
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<li>
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Use <b>one</b> of the following sets of commands to update Impala shell on each node on which it is
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installed:
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<p>
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<b>For RHEL, Oracle Linux, or CentOS systems:</b>
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</p>
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<codeblock>$ sudo yum update impala-shell</codeblock>
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<p>
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<b>For SUSE systems:</b>
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</p>
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<codeblock>$ sudo zypper update impala-shell</codeblock>
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<p>
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<b>For Debian or Ubuntu systems:</b>
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</p>
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<codeblock>$ sudo apt-get install impala-shell</codeblock>
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</li>
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<li>
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Connect to the Cloudera Manager Admin Console.
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</li>
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<li>
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In the <b>Services</b> tab, click the Impala service.
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</li>
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<li>
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Click <b>Actions</b> and click <b>Start</b>.
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</li>
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</ol>
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</conbody>
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</concept>
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<concept id="upgrade_noncm">
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<title>Upgrading Impala without Cloudera Manager</title>
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<prolog>
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<metadata>
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<!-- Fill in relevant metatag(s) when we decide how to mark non-CM topics. -->
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</metadata>
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</prolog>
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<conbody>
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<p>
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To upgrade Impala on a cluster not managed by Cloudera Manager, run these Linux commands on the appropriate
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hosts in your cluster:
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</p>
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<ol>
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<li>
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Stop Impala services.
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<ol>
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<li>
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Stop <codeph>impalad</codeph> on each Impala node in your cluster:
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<codeblock>$ sudo service impala-server stop</codeblock>
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</li>
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<li>
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Stop any instances of the state store in your cluster:
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<codeblock>$ sudo service impala-state-store stop</codeblock>
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</li>
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<li rev="1.2">
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Stop any instances of the catalog service in your cluster:
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<codeblock>$ sudo service impala-catalog stop</codeblock>
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</li>
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</ol>
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</li>
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<li>
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Check if there are new recommended or required configuration settings to put into place in the
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configuration files, typically under <filepath>/etc/impala/conf</filepath>. See
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<xref href="impala_config_performance.xml#config_performance"/> for settings related to performance and
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scalability.
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</li>
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<li>
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Use <b>one</b> of the following sets of commands to update Impala on each Impala node in your cluster:
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<p>
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<b>For RHEL, Oracle Linux, or CentOS systems:</b>
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</p>
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<codeblock>$ sudo yum update impala-server
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$ sudo yum update hadoop-lzo-cdh4 # Optional; if this package is already installed
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$ sudo yum update impala-catalog # New in Impala 1.2; do yum install when upgrading from 1.1.
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</codeblock>
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<p>
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<b>For SUSE systems:</b>
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</p>
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<codeblock>$ sudo zypper update impala-server
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$ sudo zypper update hadoop-lzo-cdh4 # Optional; if this package is already installed
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$ sudo zypper update impala-catalog # New in Impala 1.2; do zypper install when upgrading from 1.1.
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</codeblock>
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<p>
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<b>For Debian or Ubuntu systems:</b>
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</p>
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<codeblock>$ sudo apt-get install impala-server
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$ sudo apt-get install hadoop-lzo-cdh4 # Optional; if this package is already installed
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$ sudo apt-get install impala-catalog # New in Impala 1.2.
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</codeblock>
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</li>
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<li>
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Use <b>one</b> of the following sets of commands to update Impala shell on each node on which it is
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installed:
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<p>
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<b>For RHEL, Oracle Linux, or CentOS systems:</b>
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</p>
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<codeblock>$ sudo yum update impala-shell</codeblock>
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<p>
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<b>For SUSE systems:</b>
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</p>
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<codeblock>$ sudo zypper update impala-shell</codeblock>
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<p>
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<b>For Debian or Ubuntu systems:</b>
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</p>
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<codeblock>$ sudo apt-get install impala-shell</codeblock>
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</li>
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<li rev="alternatives">
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Depending on which release of Impala you are upgrading from, you might find that the symbolic links
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<filepath>/etc/impala/conf</filepath> and <filepath>/usr/lib/impala/sbin</filepath> are missing. If so,
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see <xref href="impala_known_issues.xml#known_issues"/> for the procedure to work around this
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problem.
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</li>
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<li>
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Restart Impala services:
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<ol>
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<li>
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Restart the Impala state store service on the desired nodes in your cluster. Expect to see a process
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named <codeph>statestored</codeph> if the service started successfully.
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<codeblock>$ sudo service impala-state-store start
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$ ps ax | grep [s]tatestored
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6819 ? Sl 0:07 /usr/lib/impala/sbin/statestored -log_dir=/var/log/impala -state_store_port=24000
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</codeblock>
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<p>
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Restart the state store service <i>before</i> the Impala server service to avoid <q>Not
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connected</q> errors when you run <codeph>impala-shell</codeph>.
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</p>
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</li>
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<li rev="1.2">
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Restart the Impala catalog service on whichever host it runs on in your cluster. Expect to see a
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process named <codeph>catalogd</codeph> if the service started successfully.
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<codeblock>$ sudo service impala-catalog restart
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$ ps ax | grep [c]atalogd
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6068 ? Sl 4:06 /usr/lib/impala/sbin/catalogd
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</codeblock>
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</li>
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<li>
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Restart the Impala daemon service on each node in your cluster. Expect to see a process named
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<codeph>impalad</codeph> if the service started successfully.
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<codeblock>$ sudo service impala-server start
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$ ps ax | grep [i]mpalad
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7936 ? Sl 0:12 /usr/lib/impala/sbin/impalad -log_dir=/var/log/impala -state_store_port=24000 -use_statestore
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-state_store_host=127.0.0.1 -be_port=22000
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</codeblock>
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</li>
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</ol>
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</li>
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</ol>
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<note>
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<p>
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If the services did not start successfully (even though the <codeph>sudo service</codeph> command might
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display <codeph>[OK]</codeph>), check for errors in the Impala log file, typically in
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<filepath>/var/log/impala</filepath>.
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</p>
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</note>
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</conbody>
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</concept>
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</concept>
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