This section provides information on the various components of the Apache Hadoop ecosystem.
In many data centers, using a mirror for the HDP Repositories can be the best deployment strategy. The HDP Repositories are small and easily mirrored, allowing you secure control over the contents of the Hadoop packages accepted for use in your data center.
![[Note]](../common/images/admon/note.png) | Note |
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The installer pulls many packages from the base OS repositories (repos). If you do not have a complete base OS available to all your machines at the time of installation, you may run into issues. If you encounter problems with base OS repos being unavailable, please contact your system administrator to arrange for these additional repos to be proxied or mirrored. |
