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  1. ZooKeeper
  2. ZOOKEEPER-1666

Avoid Reverse DNS lookup if the hostname in connection string is literal IP address.

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 3.4.5
    • 3.4.6, 3.5.0
    • java client
    • Try to avoid reverse name service look up when the connection string consists of literal IP addresses but not real host names.

    Description

      In our ENV, if the InetSocketAddress.getHostName() is called and the host name in the connection string are literal IP address, then the call will trigger a reverse DNS lookup which is very slow.
      And in this situation, the host name can simply set as the IP without causing any problem.

      Attachments

        1. ZOOKEEPER-1666.patch
          2 kB
          George Cao
        2. ZOOKEEPER-1666.patch
          3 kB
          George Cao
        3. ZOOKEEPER-1666-34.patch
          5 kB
          Camille Fournier
        4. ZOOKEEPER-1666-34v2.patch
          4 kB
          Camille Fournier

        Issue Links

          blocks

          Bug - A problem which impairs or prevents the functions of the product. ZOOKEEPER-1652 zookeeper java client does a reverse dns lookup when connecting

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

          Bug - A problem which impairs or prevents the functions of the product. OOZIE-1959 TestZKUtilsWithSecurity fails

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. ZOOKEEPER-1652 zookeeper java client does a reverse dns lookup when connecting

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

          Bug - A problem which impairs or prevents the functions of the product. ZOOKEEPER-2184 Zookeeper Client should re-resolve hosts when connection attempts fail

          • Blocker - Blocks development and/or testing work, production could not run
          • Closed

          Activity

            People

              georgecao George Cao
              georgecao George Cao
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              Dates

                Created:
                Updated:
                Resolved: