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| <!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd"> |
| <concept id="admin"> |
| |
| <title>Impala Administration</title> |
| <titlealts audience="PDF"><navtitle>Administration</navtitle></titlealts> |
| <prolog> |
| <metadata> |
| <data name="Category" value="Impala"/> |
| <data name="Category" value="Administrators"/> |
| <!-- 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. --> |
| <data name="Category" value="Stub Pages"/> |
| </metadata> |
| </prolog> |
| |
| <conbody> |
| |
| <p> |
| 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. |
| </p> |
| |
| <p outputclass="toc"/> |
| |
| <p> |
| <b>Related tasks:</b> |
| </p> |
| |
| <p> |
| As an administrator, you can expect to perform installation, upgrade, and configuration tasks for Impala on |
| all machines in a cluster. See <xref href="impala_install.xml#install"/>, |
| <xref href="impala_upgrading.xml#upgrading"/>, and <xref href="impala_config.xml#config"/> for details. |
| </p> |
| |
| <p> |
| For security tasks typically performed by administrators, see <xref href="impala_security.xml#security"/>. |
| </p> |
| |
| <p> |
| Administrators also decide how to allocate cluster resources so that all Hadoop components can run smoothly |
| together. For Impala, this task primarily involves: |
| <ul> |
| <li> |
| Deciding how many Impala queries can run concurrently and with how much memory, through the admission |
| control feature. See <xref href="impala_admission.xml#admission_control"/> for details. |
| </li> |
| |
| <li> |
| 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 |
| <xref href="impala_resource_management.xml#resource_management"/> for details. |
| </li> |
| </ul> |
| </p> |
| |
| </conbody> |
| </concept> |