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  1. JDK
  2. JDK-8185939

Random OOME while Stream.parallel().collect() when using GC1

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    • gc
    • x86_64
    • generic

      FULL PRODUCT VERSION :
      java version "1.8.0_144"
      Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
      Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)

      FULL OS VERSION :
      Microsoft Windows [Version 6.1.7601]

      EXTRA RELEVANT SYSTEM CONFIGURATION :
      x64, Intel Xeon CPU e5-1620 v3 3,5 GHz

      A DESCRIPTION OF THE PROBLEM :
      While running the code listed in the field "Source code for an executable test case" with the GC1 garbage collector (enabled by commandline options "-Xmx192m -XX:+UseG1GC") an OutOfMemoryError is thrown at a random time.

      The loop in the test case is doing the same operations every time. if one run works without OOME, all runs should run without OOME.

      If the flag "-XX:+UseG1GC" is removed, the code runs without OOME.

      THE PROBLEM WAS REPRODUCIBLE WITH -Xint FLAG: Did not try

      THE PROBLEM WAS REPRODUCIBLE WITH -server FLAG: Did not try

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      1. run Source code for an executable test case" with the VM options "-Xmx192m -XX:+UseG1GC"

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      Expected: normal execution of the sampe code
      Actual: OutOfMemoryError is thrown
      REPRODUCIBILITY :
      This bug can be reproduced often.

      ---------- BEGIN SOURCE ----------
          public static void main(String[] args) {

              for (int i = 0; i < 100; i++) {
                  String name = "round #" + i;

                  System.out.println(name);

                  Collection<String> tmp = IntStream
                          .range(0, 10000000)
                          .parallel().mapToObj((c) -> name)
                          .collect(Collectors.toList());
              }

              System.out.println("PASSED");

          }
      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      Not to use GC1, just remove -XX:+UseG1GC from the VM options.

        1. Test.java
          0.5 kB
        2. XlogG1GC.log
          16 kB

            Unassigned Unassigned
            webbuggrp Webbug Group
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              Created:
              Updated:
              Resolved: