Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-7186258

InetAddress$Cache should replace currentTimeMillis with nanoTime for more precise and accurate

    XMLWordPrintable

Details

    • b29
    • generic
    • generic

    Backports

      Description

        This CR is filed to replace currentTimeMillis with nanoTime in InetAddress$Cache, reasons are below:
        1. It has been confirmed that on certain Vitrual Machines the wall clock time (System.currentTimeMillis) is not advancing by the exected sleep() time. This plays havoc with the internal negative lookup cache mechanism in InetAddress ( which uses currentTimeMillis ). If the negative cache is set for 15 seconds, sleeping for 16 seconds will not guarantee that the cache will be invalidated! see CR7148829
        2. Compared with currentTimeMillis, the nanoTime is only be used to measure elapsed time and not related to any other notion of system or wall-clock time.

        Attachments

          Issue Links

            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8084960 InetAddress$Cache should replace currentTimeMillis with nanoTime for more precise and accurate

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8292980 InetAddress$Cache should replace currentTimeMillis with nanoTime for more precise and accurate

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved
            relates to

            Enhancement - null JDK-8331184 Make the time source used for the InetAddress DNS cache configurable

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Open

            Enhancement - null JDK-8049228 Improve multithreaded scalability of InetAddress cache

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved
            links to

            Commit Commit openjdk/jdk8u-dev/22230588

            Review Review openjdk/jdk8u-dev/70

            Review Review openjdk/jdk8u-dev/113

            Activity

              People

                ewang Eric Wang (Inactive)
                ewang Eric Wang (Inactive)
                Votes:
                0 Vote for this issue
                Watchers:
                6 Start watching this issue

                Dates

                  Created:
                  Updated:
                  Resolved:
                  Imported:
                  Indexed: