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  1. Hadoop Common
  2. HADOOP-342

Design/Implement a tool to support archival and analysis of logfiles.

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Details

    • New Feature
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 0.5.0
    • None
    • None

    Description

      Requirements:

      a) Create a tool support archival of logfiles (from diverse sources) in hadoop's dfs.
      b) The tool should also support analysis of the logfiles via grep/sort primitives. The tool should allow for fairly generic pattern 'grep's and let users 'sort' the matching lines (from grep) on 'columns' of their choice.

      E.g. from hadoop logs: Look for all log-lines with 'FATAL' and sort them based on timestamps (column x) and then on column y (column x, followed by column y).

      Design/Implementation:

      a) Log Archival

      Archival of logs from diverse sources can be accomplished using the distcp tool (HADOOP-341).

      b) Log analysis

      The idea is to enable users of the tool to perform analysis of logs via grep/sort primitives.

      This can be accomplished via a relatively simple Map-Reduce task where the map does the grep for the given pattern via RegexMapper and then the implicit sort (reducer) is used with a custom Comparator which performs the user-specified comparision (columns).

      The sort/grep specs can be fairly powerful by letting the user of the tool use java's in-built regex patterns (java.util.regex).

      Attachments

        1. logalyzer.patch
          10 kB
          Arun Murthy
        2. logalyzer2.patch
          10 kB
          Arun Murthy

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              Unassigned Unassigned
              acmurthy Arun Murthy
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                Updated:
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