[jira] [Created] (TEZ-3540) Eliminate inefficient use of FileSystem API

[Zhiyuan Yang (JIRA)]

Zhiyuan Yang created TEZ-3540:
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             Summary: Eliminate inefficient use of FileSystem API
                 Key: TEZ-3540
                 URL: https://issues.apache.org/jira/browse/TEZ-3540
             Project: Apache Tez
          Issue Type: Bug
            Reporter: Zhiyuan Yang
            Assignee: Zhiyuan Yang


As said in HADOOP-13427, there are certain inefficient call pattern on 
FileSystem like exists+open, exists+delete causing unnecessary RPC call to 
HDFS. Let's refactor them.



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