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  1. JDK
  2. JDK-8048020

Regression on java.util.logging.FileHandler

    Details

    • Type: Bug
    • Status: Closed
    • Priority: P3
    • Resolution: Fixed
    • Affects Version/s: 8
    • Fix Version/s: 9
    • Component/s: core-libs
    • Labels:
    • Subcomponent:
    • Introduced In Version:
      8
    • Resolved In Build:
      b23
    • CPU:
      x86_64
    • OS:
      windows_7
    • Verification:
      Verified

      Backports

        Description

        FULL PRODUCT VERSION :
        1.8.0_b123

        ADDITIONAL OS VERSION INFORMATION :
        Windows 7 x64

        A DESCRIPTION OF THE PROBLEM :
        The change

        http://hg.openjdk.java.net/jdk8u/jdk8u/jdk/rev/ac22a52a732c

        causes a regression.

        The parameter "append" in the constructor

        public FileHandler(String pattern, int limit, int count, boolean append)

        doesn't work anymore. Every time, a java program a new File is generated (when using %u in Filename), instead of appending to the existing one.


        REGRESSION. Last worked in version 7u60

        STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
        package javaapplication23;

        import java.io.IOException;
        import java.util.logging.FileHandler;

        public class JavaApplication23 {

            public static void main(String[] args) throws IOException {
                new FileHandler("./test_%g_%u.log", 10000, 100, true);
            }

        }


        EXPECTED VERSUS ACTUAL BEHAVIOR :
        EXPECTED -
        Only the file test_0_0.log (and .lck) should be generated.
        ACTUAL -
        With every program start, a new file is generated (test_0_1.log, test_0_2.log, ...)

        REPRODUCIBILITY :
        This bug can be reproduced always.

        ---------- BEGIN SOURCE ----------
        package javaapplication23;

        import java.io.IOException;
        import java.util.logging.FileHandler;

        public class JavaApplication23 {

            public static void main(String[] args) throws IOException {
                new FileHandler("./test_%g_%u.log", 10000, 100, true);
            }

        }

        ---------- END SOURCE ----------

        CUSTOMER SUBMITTED WORKAROUND :
        not known

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                • Assignee:
                  dfuchs Daniel Fuchs
                  Reporter:
                  webbuggrp Webbug Group
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                  Dates

                  • Created:
                    Updated:
                    Resolved: