What is the file "mdworker"?

I'm getting a lot of error messages in my console log from mdworker. What is it used for? Can I delete it?
2/20/14 5:17:27.257 PM com.apple.launchd.peruser.501: (com.apple.mdworker.pool.2) Throttling respawn: Will start in 1 seconds
2/20/14 5:17:31.938 PM mdworker: (Normal) Import: Using too many resources after 64 files (wired: 0 resident: 131570 swapped: 2 regions: 702), hit usage threshold importing /Volumes/Mac HD/Applications/Microsoft Office 2008/Office/Clipart Search Expansion 9, exiting to clean up now.
2/20/14 5:17:36.940 PM com.apple.launchd.peruser.501: (com.apple.mdworker.pool.2) Throttling respawn: Will start in 2 seconds
2/20/14 5:17:37.608 PM postfix/master: master exit time has arrived
2/20/14 5:17:37.636 PM postfix/master: daemon started -- version 2.8.4, configuration /etc/postfix
2/20/14 5:17:40.179 PM mdworker: iCal.mdimporter: could not parse ICS file: /Volumes/Mac HD/Applications/Microsoft Office 2008/Office/EntourageCore.framework/Versions/12/Resources/en.lproj/Timezones.ic s
2/20/14 5:17:40.636 PM mdworker: (Normal) Import: Using too many resources after 64 files (wired: 0 resident: 138220 swapped: 2 regions: 889), hit usage threshold importing /Volumes/Mac HD/Users/macnicol/Documents/  My Documents/Guns & Ammo/DefDist_DEFCAD_MEGA_PACK_v4.5_(Otacon)/Ammo/25_Winchester_Super_Short_Magn um/25_Winchester_Super_Short_Magnum.stp, exiting to clean up now.
2/20/14 5:17:45.637 PM com.apple.launchd.peruser.501: (com.apple.mdworker.pool.2) Throttling respawn: Will start in 4 seconds
2/20/14 5:17:49.824 PM mdworker: (Normal) Import: Using too many resources after 64 files (wired: 0 resident: 129117 swapped: 2 regions: 699), hit usage threshold importing /Users/macnicol/Library/Safari/History.plist, exiting to clean up now.
2/20/14 5:18:06.562 PM mdworker32: (Normal) Import: Using too many resources after 64 files (wired: 0 resident: 139028 swapped: 0 regions: 762), hit usage threshold importing /Volumes/Mac HD/Applications/Microsoft Office 2008/Office/Media/Templates/Events/Postcards/Baby Announcement.dotx, exiting to clean up now.
2/20/14 5:18:11.810 PM mdworker32: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
2/20/14 5:18:12.943 PM mdworker32: (Normal) Import: Using too many resources after 64 files (wired: 0 resident: 139027 swapped: 0 regions: 763), hit usage threshold importing /Volumes/Mac HD/Applications/Microsoft Office 2008/Office/Media/Templates/Marketing/Catalogs/Booklet Catalog.dotx, exiting to clean up now.
2/20/14 5:18:17.944 PM com.apple.launchd.peruser.501: (com.apple.mdworker.i386.0) Throttling respawn: Will start in 4 seconds
2/20/14 5:18:22.168 PM mdworker32: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
2/20/14 5:18:24.586 PM mdworker32: (Normal) Import: Using too many resources after 64 files (wired: 0 resident: 137571 swapped: 0 regions: 762), hit usage threshold importing /Volumes/Mac HD/Applications/Microsoft Office 2008/Office/Media/Templates/Office Themes/Sky.thmx, exiting to clean up now.
2/20/14 5:18:29.588 PM com.apple.launchd.peruser.501: (com.apple.mdworker.i386.0) Throttling respawn: Will start in 3 seconds
2/20/14 5:18:37.657 PM postfix/master: master exit time has arrived
2/20/14 5:18:37.686 PM postfix/master: daemon started -- version 2.8.4, configuration /etc/postfix
2/20/14 5:18:42.381 PM mdworker32: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
2/20/14 5:18:54.503 PM mdworker: (Normal) Import: Using too many resources after 2560 files (wired: 0 resident: 128072 swapped: 2 regions: 716), hit usage threshold importing /Volumes/Mac HD/Applications/Microsoft Office 2008/Office/MicrosoftOleo.framework/Versions/12/Resources/OleoResources/bin/Cul tureProperties, exiting to clean up now.
2/20/14 5:18:54.782 PM AdobeReader: ApplePersistence=NO
2/20/14 5:18:55.217 PM AdobeReader: Performance: Please update this scripting addition to supply a value for ThreadSafe for each event handler: "/Library/ScriptingAdditions/SIMBL.osax"
2/20/14 5:19:28.356 PM mdworker: (Normal) Import: Using too many resources after 5760 files (wired: 0 resident: 131092 swapped: 2 regions: 705), hit usage threshold importing /Volumes/Mac HD/Applications/Microsoft Office 2008/Office/MicrosoftOleo.framework/Versions/12/Resources/OleoResources/sw/Cult ureNameDisplay, exiting to clean up now.
2/20/14 5:19:37.711 PM postfix/master: master exit time has arrived
2/20/14 5:19:37.745 PM postfix/master: daemon started -- version 2.8.4, configuration /etc/postfix
2/20/14 5:20:08.798 PM mdworker: (Normal) Import: Using too many resources after 2304 files (wired: 0 resident: 129519 swapped: 2 regions: 718), hit usage threshold importing /Volumes/Mac HD/Users/macnicol/Documents/  My Documents/Guns & Ammo/DefDist_DEFCAD_MEGA_PACK_v4.5_(Otacon)/Pistols/Beretta_92FS_M9_Frame/Rende rs, exiting to clean up now.
2/20/14 5:20:15.989 PM mdworker: (Normal) Import: Using too many resources after 128 files (wired: 0 resident: 128882 swapped: 2 regions: 693), hit usage threshold importing /Volumes/Mac HD/Applications/Utilities/Adobe Utilities-CS5.localized/ExtendScript Toolkit CS5/SDK/Samples/cpp/docs/cpp/globals_type.html, exiting to clean up now.
2/20/14 5:20:21.263 PM mdworker: (Normal) Import: Using too many resources after 1280 files (wired: 0 resident: 128549 swapped: 2 regions: 696), hit usage threshold importing /Volumes/Mac HD/Users/macnicol/Documents/  My Documents/Guns & Ammo/DefDist_DEFCAD_MEGA_PACK_v4.5_(Otacon)/Muzzle_Devices/Sound_Moderator/READ ME.md, exiting to clean up now.
2/20/14 5:20:37.772 PM postfix/master: master exit time has arrived
2/20/14 5:20:37.800 PM postfix/master: daemon started -- version 2.8.4, configuration /etc/postfix
2/20/14 5:20:48.029 PM mdworker: (Normal) Import: Using too many resources after 128 files (wired: 0 resident: 129284 swapped: 2 regions: 714), hit usage threshold importing /Volumes/Mac HD/Users/macnicol/Documents/  My Documents/Guns & Ammo/DefDist_DEFCAD_MEGA_PACK_v4.5_(Otacon)/Pistols/1911_STI_Frame_for_5in_Stan dard_Non-unique_Slides/Renderings/1911_STI_Frame_for_5in_Standard_Non-unique_Sli des.jpg, exiting to clean up now.
2/20/14 5:20:59.788 PM mdworker: (Normal) Import: Using too many resources after 64 files (wired: 0 resident: 129683 swapped: 2 regions: 696), hit usage threshold importing /Volumes/Mac HD/Users/macnicol/Documents/  My Documents/Guns & Ammo/DefDist_DEFCAD_MEGA_PACK_v4.5_(Otacon)/Pistols/Glock_G34_Model/Renders/111 .png, exiting to clean up now.

mdworker is part of Spotlight indexing.  Spotlight as in Commnad-Space or the magnifying glass in the upper right corner of your menu bar.
You can control Spotlight via System Preferences -> Spotlight
Message was edited by: BobHarris

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