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  1. OpenDJ
  2. OPENDJ-3868

Proxied persistent searches are not cancelled/abandoned when the client abandons them or disconnects

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    Details

    • Type: Bug
    • Status: Done
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: 4.0.0
    • Fix Version/s: 5.5.0
    • Component/s: proxy

      Description

      Our commons Promise API does not support cancellation chaining. Since the LDAP client SDK returns chained promises it is not possible to abandon/cancel a request via the promise's cancel() method.

      The implication is that long running proxied operations, such as persistent searches, are never cancelled, even if the associated client disconnects, since the life-cycle of frontend connections is decoupled from the life-cycle of backend connections.

      As a workaround we may want to consider implementing special handling for persistent searches, e.g. by allocating a non load-balanced specialized connection for each psearch in order to avoid promise chaining used by request based load-balancers.

      In the long term, we should migrate the LDAP SDK client APIs to RxJava (OPENDJ-3654) where chained cancellation is supported, as well as the back-pressure support which we also need for a scalable proxy.

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              Assignee:
              ylecaillez Yannick Lecaillez
              Reporter:
              matthew Matthew Swift
              QA Assignee:
              Viktor Nawrath [X] Viktor Nawrath [X] (Inactive)
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