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  1. Hadoop Common
  2. HADOOP-7742

Evolve metrics2 in 0.23 and trunk to allow coexistence with 0.20-security releases

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Details

    • Improvement
    • Status: Open
    • Major
    • Resolution: Unresolved
    • 0.23.0
    • None
    • metrics
    • metrics2

    Description

      HADOOP-7734 expressed the desire to support downstream projects that depends on both 0.23+ and 0.20-security releases.

      In order to achieve that we need to evolve the 0.23/trunk API a little to avoid name conflicts:

      1. Rename AbstractMetric to ImmutableMetric, which also address a common question sink implementer ask about thread safety.
      2. Rename MetricsRecord to ImmutableMetrics, ditto.
      3. Rename MetricsVisitor to MetricVisitor.

      We better do it before 0.23 is released or, it will be an "incompatible" change.

      Attachments

        Issue Links

          blocks

          Bug - A problem which impairs or prevents the functions of the product. HADOOP-7734 metrics2 class names inconsistent between trunk and 20x

          • Critical - Crashes, loss of data, severe memory leak.
          • Open
          is related to

          New Feature - A new feature of the product, which has yet to be developed. HBASE-4050 Update HBase metrics framework to metrics2 framework

          • Major - Major loss of function.
          • Closed

          Activity

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              Unassigned Unassigned
              vicaya Luke Lu
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              Dates

                Created:
                Updated: