I've upgraded my solution from sitecore 8.1 Update 1 to Sitecore 8.2 initial release. After finishing the upgrade, and configuration changes, I opened the launchpad to rebuild Quick Search Index, I couldn't find this option in the launchpad under the database section.

Any idea what might be the issue?

This step is mentioned in Post-Upgrade steps in section 1.3.4 of Sitecore 8.2 Upgrade Guide.