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  1. Hadoop HDFS
  2. HDFS-9924

[umbrella] Nonblocking HDFS Access

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    Details

    • Type: New Feature
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: fs
    • Labels:
      None

      Description

      This is an umbrella JIRA for supporting Nonblocking HDFS Access.

      Currently, all the API methods are blocking calls – the caller is blocked until the method returns. It is very slow if a client makes a large number of independent calls in a single thread since each call has to wait until the previous call is finished. It is inefficient if a client needs to create a large number of threads to invoke the calls.

      We propose adding a new API to support nonblocking calls, i.e. the caller is not blocked. The methods in the new API immediately return a Java Future object. The return value can be obtained by the usual Future.get() method.

        Attachments

        1. HDFS-9924-POC.patch
          40 kB
          Duo Zhang
        2. Async-HDFS-Performance-Report.pdf
          151 kB
          Xiaobing Zhou
        3. AsyncHdfs20160510.pdf
          167 kB
          Tsz Wo Nicholas Sze

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              • Assignee:
                Apache9 Duo Zhang
                Reporter:
                szetszwo Tsz Wo Nicholas Sze
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                Dates

                • Created:
                  Updated: