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tarun11011991
tarun11011991
Level 2
January 11, 2017
Solved

How to find all duplicate assets in AEM dam?

  • January 11, 2017
  • 15 replies
  • 17531 views

Hi,

I need to find all the duplicated assets in DAM.

I followed https://docs.adobe.com/docs/en/aem/6-2/author/assets/managing-assets-touch-ui/duplicate-detection.html

This document is not helping me in searching for all duplicate values. Also, it doesn't tell that i am uploading a duplicate asset. It just pops-up a window asking for replacing or create new version for that asset.

My priority is to get list of all duplicated DAM assets. Please advise

Thanks in advance.

Best answer by kautuk_sahni

Hi 

This is done by checking SHA 1 checksum value. 

//If the asset you upload already exists in AEM Assets, the Duplicates Detected dialog warns you that you are attempting to upload a duplicate asset. The dialog appears only if the SHA 1 checksum value of the binary of the existing asset matches that of the asset you upload. In this case, the names of assets is immaterial. In other words, the dialog can even appear for assets that have different names if the SHA 1 values for their binaries are the same. With each asset uploaded you will see SHA 1 JCR node created.

So in you use-case you need to write a custom service to do the needful.

Where to find SHA1 number in Image Assets -> jcr:content ->metadata -> dam:sha1  (/content/dam/geometrixx-outdoors/banners/best-season.jpg/jcr:content/metadata)

I hope this would help you.

Thanks and Regards

Kautuk Sahni

15 replies

tarun11011991
tarun11011991Author
Level 2
January 11, 2017


Hi,

I tried uploading an image asset in Touch UI and it seems Duplicate-Detection working there. I got a pop-up window telling me that duplicates values are present.

Could you please tell me how can i generate a report (or a list ) to get all duplicate assets in one go?

Thanks in advance

smacdonald2008
smacdonald2008
Level 10
January 11, 2017

When you refer to duplicate asserts, what do you mean? Same asset name for example? If you have two assets in two locations named car. png, would this be duplcate fot your requirement? Or are you somehow wanting AEM to tell you if two assets have same data stream?

kautuk_sahni
Community Manager
kautuk_sahniCommunity ManagerAccepted solution
Community Manager
January 11, 2017

Hi 

This is done by checking SHA 1 checksum value. 

//If the asset you upload already exists in AEM Assets, the Duplicates Detected dialog warns you that you are attempting to upload a duplicate asset. The dialog appears only if the SHA 1 checksum value of the binary of the existing asset matches that of the asset you upload. In this case, the names of assets is immaterial. In other words, the dialog can even appear for assets that have different names if the SHA 1 values for their binaries are the same. With each asset uploaded you will see SHA 1 JCR node created.

So in you use-case you need to write a custom service to do the needful.

Where to find SHA1 number in Image Assets -> jcr:content ->metadata -> dam:sha1  (/content/dam/geometrixx-outdoors/banners/best-season.jpg/jcr:content/metadata)

I hope this would help you.

Thanks and Regards

Kautuk Sahni

Kautuk Sahni
    tarun11011991
    tarun11011991Author
    Level 2
    January 11, 2017

    We have already uploaded the images into the DAM. Is there any way to identify the assets that are duplicated (Same Asset with different names) ?

      tarun11011991
      tarun11011991Author
      Level 2
      January 11, 2017

      Hi,

      Thanks for the reply.

      DAM SHA1 value is coming differently for a same image with a different name. Is there any way to calculate SHA of an asset  and then compare it with other assets?

      smacdonald2008
      smacdonald2008
      Level 10
      January 11, 2017

      You would have to write your own logic for this requirement - this is not an OOTB feature. 

      kautuk_sahni
      Community Manager
      kautuk_sahniCommunity Manager
      Community Manager
      January 12, 2017

      TARUN SINGH wrote...

      Hi,

      Thanks for the reply.

      DAM SHA1 value is coming differently for a same image with a different name. Is there any way to calculate SHA of an asset  and then compare it with other assets?

       

       

      Hi,

      I just check this on AEM 6.2, for same images with different names, i am getting same SHA1. 

      Can you please share the image, your AEM version with service pack and steps to reproduce this ?

      ~kautuk

      Kautuk Sahni
      tarun11011991
      tarun11011991Author
      Level 2
      January 12, 2017

      I am using AEM 6.1 SP2
      I am attaching screenshots for metadata vaule for 3 assets which is actually same image with different names.


       

      tarun11011991
      tarun11011991Author
      Level 2
      January 12, 2017

      I am using AEM 6.1 SP2
      I am attaching screenshots for metadata vaule for 3 assets which is actually same image with different names.


       

      kautuk_sahni
      Community Manager
      kautuk_sahniCommunity Manager
      Community Manager
      January 12, 2017

      TARUN SINGH wrote...

      I am using AEM 6.1 SP2
      I am attaching screenshots for metadata vaule for 3 assets which is actually same image with different names.


       

       

      From the 1.png, I could see that all the three image have different sizes. So image would not be considered as same.

      ~kautuk

      Kautuk Sahni
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