42377db084f96e75fcbc28b76c45d96315ac2959,src/main/java/org/elasticsearch/monitor/jvm/HotThreads.java,HotThreads,similarity,#ThreadInfo#ThreadInfo#,214

Before Change



    private int similarity(ThreadInfo threadInfo, ThreadInfo threadInfo0) {
        StackTraceElement[] s1 = threadInfo.getStackTrace();
        StackTraceElement[] s2 = threadInfo0.getStackTrace();
        int i = s1.length - 1;
        int j = s2.length - 1;
        int rslt = 0;

After Change



    private int similarity(ThreadInfo threadInfo, ThreadInfo threadInfo0) {
        StackTraceElement[] s1 = threadInfo == null ? EMPTY : threadInfo.getStackTrace();
        StackTraceElement[] s2 = threadInfo0 == null ? EMPTY : threadInfo0.getStackTrace();
        int i = s1.length - 1;
        int j = s2.length - 1;
        int rslt = 0;