Abstract: A search system as disclosed analyzes a file name to identify any potential tokens or words that might be relevant, and creates supplementary information for the file name. The supplementary information is indexed and searchable, thereby significantly improving the ability of a search engine to discover and return successful search hits.

Abstract: A search engine may maintain a list of derived metadata. When an event occurs that requires updating a search index, the search engine can determine which metadata is derived metadata and take appropriate actions with respect to the derived metadata. For example, if a request is received to update the index for a particular object, the search engine may protect the derived metadata from change while updating the other metadata in the index. As another example, if a request is received to update the text content for the object, the search engine may change the text content and the derived metadata. By identifying derived metadata, the search engine can protect the derived metadata from change when a request is received that otherwise causes metadata to change and can change the derived metadata when a request is received that would otherwise not change the metadata portion of the index.

Abstract: A search system can maintain a search index of metadata and text for objects in a repository, repositories or distributed across a network. The search index can be divided into partitions with a partition assigned a first capacity utilization threshold and a second capacity utilization threshold. If the capacity utilization of the partition is below the first threshold, the system can add, update and delete information in the partition. If the capacity utilization of the partition is above the first threshold, the system can update and delete information in the partition, but cannot add information for new objects to the partition. If the capacity utilization of the partition is above the second threshold, the system can enter a rebalancing mode in which it seeks to rebalance capacity utilization between partitions. The behavior of the system can change depending upon the size of a partition relative to its configurable thresholds.

Abstract: Systems, methods, and computer program products for enabling assessment of the quality of a search index. In one embodiment, objects are processed to produce corresponding text that is stored and indexed. The objects are also processed to identify and store corresponding metadata values for indexing. Error conditions that are detected during the processing of objects to generate corresponding text are tracked and compared to determine the most severe of the error conditions. An indication of the most severe error condition is stored in a first consolidated error field. Errors that are encountered in the identification and storage of metadata values are counted and this count is stored in a second consolidated error field. Both of the consolidated error fields are indexed in the same manner as the text and metadata for the objects, so that the stored error information can be used in queries of the search index.