An error occurred in the Microsoft SharePoint Portal Server Search (SharePointPSSearch) service. An entry in the hash map cannot be updated.
To resolve this issue execute the following steps:
If the error indicates that there is insufficient free hard disk space, increase the amount of free space. To review the current free space utilization on the computer, start the following view:
Start Disk Capacity View
If the error occurred because of disk error, replace the disk.
If the error occurred because of data corruption, reset the content index.