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  1. Couchbase Server
  2. MB-52156

XDCR - Metakv callbacks racing when remote cluster ref is added/changed

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    • Unknown

    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

      Attachments

        Issue Links

          backports to

          Bug - A problem which impairs or prevents the functions of the product. MB-54366 [BP-7.0.5] - XDCR Metakv callbacks racing when remote cluster ref is added/changed

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. MB-54431 [BP-7.1.3] - XDCR Metakv callbacks racing when remote cluster ref is added/changed

          • Major - Major loss of function.
          • Resolved
          causes

          Bug - A problem which impairs or prevents the functions of the product. MB-54424 XDCR - Unexpected server error (500)

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MB-57719 XDCR - metakv "revision does not match" shows up

          • Test Blocker - QE-related tests can't proceed
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MB-57787 [BP 7.2.1] - XDCR - metakv "revision does not match" shows up

          • Test Blocker - QE-related tests can't proceed
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MB-57788 [BP 7.1.5] - XDCR - metakv "revision does not match" shows up

          • Test Blocker - QE-related tests can't proceed
          • Closed

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              ayush.nayyar Ayush Nayyar
              sudeep.jathar Sudeep Jathar
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              Dates

                Created:
                Updated:
                Resolved:

                PagerDuty