Online/Offline Compaction : AEM 6.3 | Community
Skip to main content
cquser1
cquser1
Level 7
February 22, 2018
Solved

Online/Offline Compaction : AEM 6.3

  • February 22, 2018
  • 8 replies
  • 8599 views

  Hi All,

I need to understand the process of online/offline compaction. Found the below link. It says something like Revision cleanup. Is that the same as online/offline compaction.

Revision Cleanup​

Any thoughts on this will be helpful.

    This post is no longer active and is closed to new replies. Need help? Start a new post to ask your question.
    Best answer by Hemant_arora

    Yes its the same. Infact its compaction is one of the phases of maintaining the repository.

    The mechanism will reclaim disk space by removing obsolete data from the repository, and has three phases: estimation, compaction, cleanup. In the past the revision cleanup was often referenced as compaction.

    Refer to these articles:

    Storage Elements in AEM 6.2

    Revision Cleanup

    8 replies

    D
    dylanr46798176
    Level 3
    February 22, 2018

    Previously, the term "revision cleanup", basically was compaction. The terminology has changed and compaction is now a part of the revision cleanup process. It says this in the documentation for AEM 6.3:

    The revision cleanup process consists of three phases: estimation, compaction and clean up. Estimation determines whether to run the next phase (compaction) or not based on how much garbage might be collected. During the compaction phase segments and tar files are rewritten leaving out any unused content. The clean up phase subsequently removes the old segments including any garbage they may contain.

      Hemant_arora
      Hemant_aroraAccepted solution
      Level 8
      February 22, 2018

      Yes its the same. Infact its compaction is one of the phases of maintaining the repository.

      The mechanism will reclaim disk space by removing obsolete data from the repository, and has three phases: estimation, compaction, cleanup. In the past the revision cleanup was often referenced as compaction.

      Refer to these articles:

      Storage Elements in AEM 6.2

      Revision Cleanup

        sureshr19072451
        sureshr19072451
        Level 3
        February 23, 2018

        Any ways to disable this in AEM 6.3? We have come across this blog post when solving inconsistency in AEM publish instance segment store.

        Possible reason is missing Repository service. Check AuthenticationSupport dependencies |

        And we were able to get the server up and running after following the steps outlined. However, one thing that we couldn't execute was disabling the online compaction using the below step, specifically the first highlighted line.

        Solution: Permanently switch off online compaction from here, go to following node in crxde-

        – /libs/granite/operations/config/maintenance/granite:daily/granite:RevisionGC

        – And update the value of runmode to ‘crx3-disabled’ from ‘crx3’

        If it gets curropted we can follwing these steps to get this up:

        We are not facing this problem in other environments. But one or two this is being a problem for us. Is Online Compaction stable in 6.3? Cause, the blog was not targeting AEM 6.3 and AFAIK online compaction is much recommended for 6.3.

        Hemant_arora
        Hemant_arora
        Level 8
        February 26, 2018

        Did you try this ? https://helpx.adobe.com/experience-manager/kb/disable-online-compaction.html

        sureshr19072451
        sureshr19072451
        Level 3
        February 28, 2018

        Thanks Hemant.

        Can you please point me to same solution in 6.3 docs?

        N
        nkroon
        Level 2
        March 8, 2018

        I just deleted the task in one of our lab environments from the Daily Maintenance window under Operations -> Maintenance -> Daily Maintenance.  I'll know tomorrow whether it ran tomorrow  morning at 2:00 am.

        N
        nkroon
        Level 2
        March 9, 2018

        Removing the task from the daily maintenance did the trick.

        Ned

        sureshr19072451
        sureshr19072451
        Level 3
        March 10, 2018

        Thanks for your Time on this.

        Removing the task from the maintenance would work for sure.

        I am hoping to get this information through Adobe Docs or Adobe Internal Staff. We don't want to disable it unless if it stable. As per Adobe docs, Online Compaction in 6.3 is stable and recommended maintenance activity.

        Terms & ConditionsAccessibility statement

        Loading footer...