Uploaded image for project: 'Kafka'
  1. Kafka
  2. KAFKA-7193

ZooKeeper client times out with localhost due to random choice of ipv4/ipv6

    XMLWordPrintableJSON

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.0.0
    • Fix Version/s: 2.0.0
    • Component/s: zkclient
    • Labels:
      None

      Description

      ZooKeeper client from version 3.4.13 doesn't handle connections to `localhost` very well. If ZooKeeper is started on 127.0.0.1 on a machine that has both ipv4 and ipv6 and a client is created using `localhost` rather than the IP address in the connection string, ZooKeeper client attempts to connect to ipv4 or ipv6 randomly with a fixed one second backoff if connection fails. With the default 6 second connection timeout in Kafka, this can result in client connection failures if ipv6 is chosen in consecutive address selections.

      Streams tests are failing intermittently as a result of this.

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                rsivaram Rajini Sivaram
                Reporter:
                rsivaram Rajini Sivaram
                Reviewer:
                Ismael Juma
              • Votes:
                0 Vote for this issue
                Watchers:
                3 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: