After execution or the command, the result confirmed a problem with the Index Partition. Showing the Index component with the Degraded state.
Reset the Search Index
Perform a Full Crawl on Search Content Source
For resetting the search index, you should go to the Central Administration page. Open up Search Service Application management page and click “Reset Index” link on left hand side. To confirm the Index Reset, click “OK” in the popup message.
And then you should re-index all content sources. For this operation, you should go to the Central Administration Console. Then open Search Service Application Management Page and go to “Content Sources” link. Click any of the content source you already configured earlier, and start full crawl.
You can open up a PowerShell window (used the option “Run As Administrator” to ensure proper permissions) and execute the following commands: