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  1. Sakai
  2. SAK-39008

Implement Realm grants Caching

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    Details

    • Type: Bug
    • Status: CLOSED
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: 2.8.x
    • Fix Version/s: 2.9.x
    • Component/s: Kernel
    • Labels:
    • Previous Issue Keys:
      KNL-600

      Description

      mail to sakai-dev:

      This afternoon we suffred a period of high utalization on our database back end for a period. I'm still investigating to see what caused it but it seelms that at least part of this was a high number of long running query for realm grants:

      SELECT SAKAI_REALM_ROLE.ROLE_NAME, SAKAI_REALM_RL_GR.USER_ID, SAKAI_REALM_RL_GR.ACTIVE, SAKAI_REALM_RL_GR.PROVIDED FROM SAKAI_REALM_RL_GR INNER JOIN SAKAI_REALM ON SAKAI_REALM.REALM_KEY = SAKAI_REALM_RL_GR.REALM_KEY AND SAKAI_REALM.REALM_ID = '/site/96dbcba6-01c2-4059-007a-40e484873bb9' INNER JOIN SAKAI_REALM_ROLE ON SAKAI_REALM_ROLE.ROLE_KEY = SAKAI_REALM_RL_GR.ROLE_KEY;

      adding a quick cache and visiting roster and site info in a site resulted in 1 miss and 8 hits on this cache. Now while it is easy to add a cache at this point the AuthzGroup code seems to assume that this information is not cached, and making sure we invalidate the cache in a cluster safe way is slightly more complex....

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          Attachments

          1. KNL-600.diff
            7 kB
          2. KNL-600.patch
            13 kB
          3. KNL-600.patch.txt
            15 kB
          4. reverse-KNL-600.patch.txt
            7 kB

            Issue Links

            is depended on by

            Bug - A problem which impairs or prevents functionality of the product. SAK-38625 realmRoleGroupCache settings in authz-components.xml not being respected

            • Major - Major loss of function or need for functionality in production in the near future.
            • CLOSED
            is related to

            Bug - A problem which impairs or prevents functionality of the product. SAK-39254 refreshAuthzGroup is inefficient and can cause high load

            • Critical - Crashes, loss of data, severe memory leak, need functionality ASAP in production.
            • RESOLVED

            Bug - A problem which impairs or prevents functionality of the product. SAK-23072 Cloning a realm does not copy roles

            • Minor - Minor loss of function, problem where easy workaround is present, or functionality which would be nice to have.
            • RESOLVED

            Bug - A problem which impairs or prevents functionality of the product. SAK-38897 Can't join apparently joinable site

            • Blocker - Blocks development and/or testing work, production could not run without this feature working correctly.
            • CLOSED

            Bug - A problem which impairs or prevents functionality of the product. SAK-39182 Visibility issue with BaseRole in Upgraded instalations

            • Blocker - Blocks development and/or testing work, production could not run without this feature working correctly.
            • CLOSED
            relates to

            Bug - A problem which impairs or prevents functionality of the product. SAK-38672 Cache invalidation for grants isn't happening when editing a special realm

            • Critical - Crashes, loss of data, severe memory leak, need functionality ASAP in production.
            • CLOSED

            Bug - A problem which impairs or prevents functionality of the product. SAK-39338 excessive memory usage inside realmRoleGroupCache values

            • Major - Major loss of function or need for functionality in production in the near future.
            • CLOSED

              Activity

                People

                • Assignee:
                  aaronz Aaron Zeckoski (Inactive)
                  Reporter:
                  dhorwitz David Horwitz
                • Votes:
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                  Watchers:
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                  Dates

                  • Created:
                    Updated:
                    Resolved:

                    Git Source Code