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Double service announcement from coordinator #369

Closed as not planned
Closed as not planned

Description

@gianm

It looks like under certain conditions the coordinator can announce itself twice in service discovery. The indexing overlord may have a similar issue, since its announcement process is similar.

We observed something like:

1- Coordinator #1 logged ZK "SUSPENDED" followed by "Unannouncing service"
2- Coordinator #2 became leader and logged "Announcing service"
3- Coordinator #1 logged ZK "LOST" followed by "RECONNECTED"

Then some time later:

4- Coordinator #2 logged ZK "SUSPENDED" followed by "Unannouncing service" followed by ZK "RECONNECTED"
5- Coordinator #1 became leader and logged "Announcing service"

At this point Coordinator #1 was leader and was registered twice in service discovery. It appears that it probably did not successfully unannounce its service in step 1.

Activity

  1. tarekrached commented on Feb 7, 2014

    @tarekrached

    It would be totally sweet if this worked right.

  2. github-actions commented on May 13, 2023

    @github-actions

    This issue has been marked as stale due to 280 days of inactivity.
    It will be closed in 4 weeks if no further activity occurs. If this issue is still
    relevant, please simply write any comment. Even if closed, you can still revive the
    issue at any time or discuss it on the dev@druid.apache.org list.
    Thank you for your contributions.

  3. github-actions commented on Jun 10, 2023

    @github-actions

    This issue has been closed due to lack of activity. If you think that
    is incorrect, or the issue requires additional review, you can revive the issue at
    any time.

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