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  1. HBase
  2. HBASE-2000 Coprocessors
  3. HBASE-2002

Coprocessors: Client side support

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Details

    • Sub-task
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 0.92.0
    • Coprocessors
    • None
    • Reviewed
    • Hide
      Adds new HTable.coprocessorProxy() and HTable.coprocessorExec() calls, along with server-side hooks for registering user RPC protocol handlers. Together these allow the invocation and execution of custom server-side code configured as coprocessors.

      Adds pluggable RPC engines as a first step towards alternate RPC implementations. This adds a field for the RPC protocol interface on connection setup, so it's not RPC wire compatible with previous versions.
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      Adds new HTable.coprocessorProxy() and HTable.coprocessorExec() calls, along with server-side hooks for registering user RPC protocol handlers. Together these allow the invocation and execution of custom server-side code configured as coprocessors. Adds pluggable RPC engines as a first step towards alternate RPC implementations. This adds a field for the RPC protocol interface on connection setup, so it's not RPC wire compatible with previous versions.

    Description

      "High-level call interface for clients. Unlike RPC, calls addressed to rows or ranges of rows. Coprocessor client library resolves to actual locations. Calls across multiple rows automatically split into multiple parallelized RPCs"

      Generic multicall RPC facility which incorporates this and multiget/multiput/multidelete and parallel scanners.

      Group and batch RPCs by region server. Track and retry outstanding RPCs. Ride over region relocations.

      Support addressing by explicit region identifier or by row key or row key range.

      Include a facility for merging results client side.

      Attachments

        1. HBASE-2002_final.patch
          148 kB
          Gary Helmling

        Issue Links

          is blocked by

          Improvement - An improvement or enhancement to an existing feature or task. HBASE-2321 Support RPC interface changes at runtime

          • Major - Major loss of function.
          • Closed
          is related to

          Bug - A problem which impairs or prevents the functions of the product. HBASE-5204 Backward compatibility fixes for 0.92

          • Blocker - Blocks development and/or testing work, production could not run
          • Closed

          New Feature - A new feature of the product, which has yet to be developed. HBASE-2357 Coprocessors: Add read-only region replicas (slaves) for availability and fast region recovery

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

          New Feature - A new feature of the product, which has yet to be developed. HBASE-1845 MultiGet, MultiDelete, and MultiPut - batched to the appropriate region servers

          • Major - Major loss of function.
          • Closed

          New Feature - A new feature of the product, which has yet to be developed. HBASE-1935 Scan in parallel

          • Major - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. HBASE-74 [performance] When a get or scan request spans multiple columns, execute the reads in parallel

          • Major - Major loss of function.
          • Closed

          Activity

            People

              ghelmling Gary Helmling
              apurtell Andrew Kyle Purtell
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              Dates

                Created:
                Updated:
                Resolved: