We are seeing continuous logs are logged for sitecore_core indexing with zero item processed in log file. What is the solution to fix the issue? Logs: <pre> ManagedPoolThread #2 04:09:29 INFO Job started: Index_Update_IndexName=sitecore_core_index ManagedPoolThread #2 04:09:29 INFO Job ended: Index_Update_IndexName=sitecore_core_index (units processed: ) ManagedPoolThread #7 04:09:29 INFO Job started: Index_Update_IndexName=sitecore_core_index ManagedPoolThread #7 04:09:29 INFO Job ended: Index_Update_IndexName=sitecore_core_index (units processed: ) ManagedPoolThread #10 04:09:29 INFO Job started: Index_Update_IndexName=sitecore_core_index ManagedPoolThread #10 04:09:29 INFO Job ended: Index_Update_IndexName=sitecore_core_index (units processed: ) ManagedPoolThread #9 04:09:29 INFO Job started: Index_Update_IndexName=sitecore_core_index ManagedPoolThread #9 04:09:29 INFO Job ended: Index_Update_IndexName=sitecore_core_index (units processed: ) ManagedPoolThread #9 04:09:29 INFO Job started: Index_Update_IndexName=sitecore_core_index ManagedPoolThread #9 04:09:30 INFO Job ended: Index_Update_IndexName=sitecore_core_index (units processed: ) ManagedPoolThread #19 04:09:30 INFO Job started: Index_Update_IndexName=sitecore_core_index ManagedPoolThread #19 04:09:30 INFO Job ended: Index_Update_IndexName=sitecore_core_index (units processed: ) ManagedPoolThread #4 04:09:30 INFO Job started: Index_Update_IndexName=sitecore_core_index ManagedPoolThread #4 04:09:30 INFO Job ended: Index_Update_IndexName=sitecore_core_index (units processed: ) ManagedPoolThread #1 04:09:30 INFO Job started: Index_Update_IndexName=sitecore_core_index ManagedPoolThread #1 04:09:30 INFO Job ended: Index_Update_IndexName=sitecore_core_index (units processed: ) ManagedPoolThread #1 04:09:30 INFO Job started: Index_Update_IndexName=sitecore_core_index ManagedPoolThread #1 04:09:30 INFO Job ended: Index_Update_IndexName=sitecore_core_index (units processed: ) ManagedPoolThread #1 04:09:30 INFO Job started: Index_Update_IndexName=sitecore_core_index ManagedPoolThread #1 04:09:30 INFO Job ended: Index_Update_IndexName=sitecore_core_index (units processed: ) ManagedPoolThread #6 04:09:30 INFO Job started: Index_Update_IndexName=sitecore_core_index ManagedPoolThread #6 04:09:30 INFO Job ended: Index_Update_IndexName=sitecore_core_index (units processed: ) ManagedPoolThread #17 04:09:30 INFO Job started: Index_Update_IndexName=sitecore_core_index ManagedPoolThread #17 04:09:30 INFO Job ended: Index_Update_IndexName=sitecore_core_index (units processed: ) ManagedPoolThread #15 04:09:30 INFO Job started: Index_Update_IndexName=sitecore_core_index ManagedPoolThread #15 04:09:30 INFO Job ended: Index_Update_IndexName=sitecore_core_index (units processed: ) ManagedPoolThread #16 04:09:30 INFO Job started: Index_Update_IndexName=sitecore_core_index ManagedPoolThread #16 04:09:30 INFO Job ended: Index_Update_IndexName=sitecore_core_index (units processed: )</pre>