The item may be too large or corrupt. You may also verify that you have the latest version of this IFilter.
Problem:
SharePoint search didn’t return search results on Large lists and libraries. On analyzing search crawl log, found the error logged: “The item may be too large or corrupt. You may also verify that you have the latest version of this IFilter.”.
Solution:
Make these registry changes in Index server and restart SharePoint search service. Once done, trigger the crawl again.
Key
|
Default Value
|
New Value
|
HKLM\SOFTWARE\Microsoft\Office Server\12\Search\Global\GatheringManager\DedicatedFilterProcessMemoryQuota
|
104,857,600
|
209,715,200
|
HKLM\SOFTWARE\Microsoft\Office Server\12\Search\Global\GatheringManager\FilterProcessMemoryQuota
|
104,857,600
|
209,715,200
|
HKLM\SOFTWARE\Microsoft\Office Server\12\Search\Global\GatheringManager\FolderHighPriority
|
50
|
500
|
Thanks to Technet forums!
https://social.technet.microsoft.com/Forums/en-US/sharepointsearchlegacy/thread/138e2e68-9bf7-4a1c-9519-ace6a78ddaa5