media-internal-binary Items Are Published Every Time Requested Because LastModified Test in DistributorReader Never Matches
(Doc ID 1954453.1)
Last updated on APRIL 04, 2017
Applies to:
Oracle Commerce Platform - Version 9.4.0.4 and laterInformation in this document applies to any platform.
Symptoms
The PublishingWebAgent continually publishes media-internal-binary items every time they are requested, even though they are already found on the application sever and have not been modified.
This I/O increases page latency causing excessive network I/O and disk I/O with no benefit.
To verify if this is indeed the problem you are experiencing, enable loggingDebug on /atg/dynanmo/server/DistributorServer and configure media-internal-binary data on a target system to push image data to DistributorServer. In the log file you will see the same file being pushed again and again:
**** debug Fri Aug 01 11:27:31 CDT 2014 /atg/dynamo/server/DistributorServer File /acme.com/htdocs/images/MEDIA_ProductCatalog/ourHdr.jpg's size (117193) matches 117193
**** debug Fri Aug 01 11:27:31 CDT 2014 /atg/dynamo/server/DistributorServer File /acme.com/htdocs/images/MEDIA_ProductCatalog/ourHdr.jpg's lastModified (1389860496000) does NOT match 1389869916939
**** debug Fri Aug 01 11:27:31 CDT 2014 /atg/dynamo/server/DistributorServer File /acme.com/htdocs/images/MEDIA_ProductCatalog/ourHdr.jpg is not the same
**** info Fri Aug 01 11:27:31 CDT 2014 /atg/dynamo/server/DistributorServer PUT ourHdr.jpg; path="/acme.com/htdocs/images/MEDIA_ProductCatalog/ourHdr.jpg"; size="117193"; last modified="1389869916939"; last modified date="1/16/14 4:58 AM"
**** info Fri Aug 01 11:27:31 CDT 2014 /atg/dynamo/server/DistributorServer Wrote file: name="ourHdr.jpg"; path="/acme.com/htdocs/images/MEDIA_ProductCatalog/ourHdr.jpg"; size="117193"; last modified="1389869916000"; last modified date="1/16/14 4:58 AM"
:
:
**** debug Fri Aug 01 11:29:41 CDT 2014 /atg/dynamo/server/DistributorServer Checking file ourHdr.jpg; path="/acme.com/htdocs/images/MEDIA_ProductCatalog/ourHdr.jpg"; size="117193"
**** debug Fri Aug 01 11:29:41 CDT 2014 /atg/dynamo/server/DistributorServer File /acme.com/htdocs/images/MEDIA_ProductCatalog/ourHdr.jpg's size (117193) matches 117193
**** debug Fri Aug 01 11:29:41 CDT 2014 /atg/dynamo/server/DistributorServer File /acme.com/htdocs/images/MEDIA_ProductCatalog/ourHdr.jpg's lastModified (1389869916000) does NOT match 1389869916939
**** debug Fri Aug 01 11:29:41 CDT 2014 /atg/dynamo/server/DistributorServer File /acme.com/htdocs/images/MEDIA_ProductCatalog/ourHdr.jpg is not the same
**** info Fri Aug 01 11:29:41 CDT 2014 /atg/dynamo/server/DistributorServer PUT ourHdr.jpg; path="/acme.com/htdocs/images/MEDIA_ProductCatalog/ourHdr.jpg"; size="117193"; last modified="1389869916939"; last modified date="1/16/14 4:58 AM"
**** info Fri Aug 01 11:29:41 CDT 2014 /atg/dynamo/server/DistributorServer Wrote file: name="ourHdr.jpg"; path="/acme.com/htdocs/images/MEDIA_ProductCatalog/ourHdr.jpg"; size="117193"; last modified="1389869916000"; last modified date="1/16/14 4:58 AM"
Changes
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |