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Posted to dev@hive.apache.org by "Matt McCline (JIRA)" <ji...@apache.org> on 2015/07/29 01:04:04 UTC

[jira] [Created] (HIVE-11394) Enhance EXPLAIN display for vectorization

Matt McCline created HIVE-11394:
-----------------------------------

             Summary: Enhance EXPLAIN display for vectorization
                 Key: HIVE-11394
                 URL: https://issues.apache.org/jira/browse/HIVE-11394
             Project: Hive
          Issue Type: Bug
          Components: Hive
            Reporter: Matt McCline
            Assignee: Matt McCline
            Priority: Critical


Add detail to the EXPLAIN EXTENDED output showing why a Map or Reduce task was not vectorized.

Always show Execution mode for EXPLAIN.  That is, add showing "Execution mode: not vectorized" in addition to today's "Execution mode: vectorized".

Some examples:
{code}
EXPLAIN:
Execution mode: not vectorized

EXPLAIN EXTENDED:
Execution mode: not vectorized; detail: configuration variable --hive.vectorized.execution.enabled is false
Execution mode: not vectorized; detail: data type not supported -- array<string>
Execution mode: not vectorized; detail: feature not supported -- PTF operator
Execution mode: not vectorized; detail: input format not supported -- org.apache.hadoop.mapred.TextInputFormat doesn't provide vectorized input
{code}



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