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  1. Couchbase Server
  2. MB-54431

[BP-7.1.3] - XDCR Metakv callbacks racing when remote cluster ref is added/changed

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    Description

      Multiple callbacks are allowed to run for metakv listener. These normally run fine as these do not take much time. But in-case the callbacks take time (e.g due to long DNS look-up time) then the order in which changes happen in metakv are applied out-of-order.

      This is because the a spawned callback gets stalled and in the meantime, the metakv gets modified. This stalled callback overrides with values.

      All this gets manifested with error: 

       

      Error writing to metakv: revision number does not match

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          Bug - A problem which impairs or prevents the functions of the product. MB-52156 XDCR - Metakv callbacks racing when remote cluster ref is added/changed

          • Major - Major loss of function.
          • Resolved
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              ritam.sharma Ritam Sharma
              sudeep.jathar Sudeep Jathar
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                Resolved:

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