[jira] [Updated] (DRILL-4911) SimpleParallelizer should avoid plan serialization for logging purpose when debug logging is not enabled.

["Jinfeng Ni (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-4911?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jinfeng Ni updated DRILL-4911:
------------------------------
    Priority: Minor  (was: Major)

> SimpleParallelizer should avoid plan serialization for logging purpose when debug logging is not enabled.
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: DRILL-4911
>                 URL: https://issues.apache.org/jira/browse/DRILL-4911
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>            Reporter: Jinfeng Ni
>            Priority: Minor
>
> SimpleParallelizer and subclass has code to put serialized plan in debug log. However, in case when the physical plan fragment is very large (table is huge with large # of partitions, files, etc), the overhead of serialization is not negligible. The code seems to always do serialization, regardless whether the debug flag is turned on. 
> To reduce the overhead, SimpleParallelizer and subclass should only do plan serialization for logging purpose when debug logging is turned on.



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