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  1. Hadoop HDFS
  2. HDFS-9924

[umbrella] Nonblocking HDFS Access

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Details

    • New Feature
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
    • fs
    • 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. AsyncHdfs20160510.pdf
          167 kB
          Tsz-wo Sze
        2. Async-HDFS-Performance-Report.pdf
          151 kB
          Xiaobing Zhou
        3. HDFS-9924-POC.patch
          40 kB
          Duo Zhang

        Issue Links

          incorporates

          New Feature - A new feature of the product, which has yet to be developed. HADOOP-12909 Change ipc.Client to support asynchronous calls

          • Major - Major loss of function.
          • Resolved

          New Feature - A new feature of the product, which has yet to be developed. HDFS-10345 [umbrella] Implement an asynchronous DistributedFileSystem

          • Major - Major loss of function.
          • Resolved

          New Feature - A new feature of the product, which has yet to be developed. HADOOP-12910 Add new FileSystem API to support asynchronous method calls

          • Major - Major loss of function.
          • Patch Available

          Improvement - An improvement or enhancement to an existing feature or task. HADOOP-12957 Limit the number of outstanding async calls

          • Major - Major loss of function.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. HADOOP-12969 Mark IPC.Client and IPC.Server as @Public, @Evolving

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          is related to

          Improvement - An improvement or enhancement to an existing feature or task. HADOOP-13057 Async IPC server support

          • Major - Major loss of function.
          • Resolved
          relates to

          New Feature - A new feature of the product, which has yet to be developed. HDFS-13572 [umbrella] Non-blocking HDFS Access for H3

          • Major - Major loss of function.
          • Open

          New Feature - A new feature of the product, which has yet to be developed. HDFS-8707 Implement an async pure c++ HDFS client

          • Major - Major loss of function.
          • Resolved

          Activity

            People

              zhangduo Duo Zhang
              szetszwo Tsz-wo Sze
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              Dates

                Created:
                Updated: