storm-client/src/jvm/org/apache/storm/metrics2/reporters/CsvStormReporter.java [45:55]:
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    private static void validateCreateOutputDir(File dir) {
        if (!dir.exists()) {
            dir.mkdirs();
        }
        if (!dir.canWrite()) {
            throw new IllegalStateException(dir.getName() + " does not have write permissions.");
        }
        if (!dir.isDirectory()) {
            throw new IllegalStateException(dir.getName() + " is not a directory.");
        }
    }
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storm-server/src/main/java/org/apache/storm/daemon/metrics/MetricsUtils.java [76:86]:
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    private static void validateCreateOutputDir(File dir) {
        if (!dir.exists()) {
            dir.mkdirs();
        }
        if (!dir.canWrite()) {
            throw new IllegalStateException(dir.getName() + " does not have write permissions.");
        }
        if (!dir.isDirectory()) {
            throw new IllegalStateException(dir.getName() + " is not a directory.");
        }
    }
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