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Posted to dev@drill.apache.org by "Volodymyr Vysotskyi (JIRA)" <ji...@apache.org> on 2019/03/19 15:44:00 UTC

[jira] [Created] (DRILL-7116) Adapt statistics to use Drill Metastore API

Volodymyr Vysotskyi created DRILL-7116:
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             Summary: Adapt statistics to use Drill Metastore API
                 Key: DRILL-7116
                 URL: https://issues.apache.org/jira/browse/DRILL-7116
             Project: Apache Drill
          Issue Type: Sub-task
    Affects Versions: 1.16.0
            Reporter: Volodymyr Vysotskyi
            Assignee: Volodymyr Vysotskyi
             Fix For: 1.17.0


The current implementation of statistics supposes the usage of files for storing and reading statistics.
 The aim of this Jira is to adapt statistics to use Drill Metastore API so in future it may be stored in other metastore implementations.

Implementation details:
 - Move statistics info into {{TableMetadata}}
 - Provide a way for obtaining {{TableMetadata}} in the places where statistics may be used (partially implemented in the scope of DRILL-7089)
 - Investigate and implement (if possible) lazy materialization of {{DrillStatsTable}}.



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