[jira] [Created] (HADOOP-13306) add filter doesnot check if it exists

["chillon_m (JIRA)" <ji...@apache.org>]

chillon_m created HADOOP-13306:
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             Summary: add filter doesnot check if it exists
                 Key: HADOOP-13306
                 URL: https://issues.apache.org/jira/browse/HADOOP-13306
             Project: Hadoop Common
          Issue Type: Improvement
          Components: net
    Affects Versions: 2.5.2
            Reporter: chillon_m
            Priority: Minor


hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/http/HttpServer2.java
line-705:defineFilter() doesnot check filter if it exists.we need check if it exists before add it.

another,No_Cache_Filter added twice when create a HttpServer2 object.
I think addDefaultApps()  invoke addNoCacheFilter() is unnecessary.



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