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| <h1 class="title topictitle1" id="ariaid-title1">Impala Administration</h1> |
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| As an administrator, you monitor Impala's use of resources and take action when necessary to keep Impala |
| running smoothly and avoid conflicts with other Hadoop components running on the same cluster. When you |
| detect that an issue has happened or could happen in the future, you reconfigure Impala or other components |
| such as HDFS or even the hardware of the cluster itself to resolve or avoid problems. |
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| <strong class="ph b">Related tasks:</strong> |
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| As an administrator, you can expect to perform installation, upgrade, and configuration tasks for Impala on |
| all machines in a cluster. See <a class="xref" href="impala_install.html#install">Installing Impala</a>, |
| <a class="xref" href="impala_upgrading.html#upgrading">Upgrading Impala</a>, and <a class="xref" href="impala_config.html#config">Managing Impala</a> for details. |
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| For security tasks typically performed by administrators, see <a class="xref" href="impala_security.html#security">Impala Security</a>. |
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| Administrators also decide how to allocate cluster resources so that all Hadoop components can run smoothly |
| together. For Impala, this task primarily involves: |
| <ul class="ul"> |
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| Deciding how many Impala queries can run concurrently and with how much memory, through the admission |
| control feature. See <a class="xref" href="impala_admission.html#admission_control">Admission Control and Query Queuing</a> for details. |
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| Dividing cluster resources such as memory between Impala and other components, using YARN for overall |
| resource management, and Llama to mediate resource requests from Impala to YARN. See |
| <a class="xref" href="impala_resource_management.html#resource_management">Resource Management</a> for details. |
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| <div class="related-links"> |
| <ul class="ullinks"> |
| <li class="link ulchildlink"><strong><a href="../topics/impala_timeouts.html">Setting Timeout Periods for Daemons, Queries, and Sessions</a></strong><br /> |
| </li> |
| <li class="link ulchildlink"><strong><a href="../topics/impala_ha.html">Configuring Impala for High Availability</a></strong><br /> |
| </li> |
| <li class="link ulchildlink"><strong><a href="../topics/impala_proxy.html">Using Impala through a Proxy for High Availability</a></strong><br /> |
| </li> |
| <li class="link ulchildlink"><strong><a href="../topics/impala_disk_space.html">Managing Disk Space for Impala Data</a></strong><br /> |
| </li> |
| </ul> |
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