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From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Created] (PHOENIX-4004) Assorted improvements to reduce garbage in mutable index codepath
Date Fri, 07 Jul 2017 20:27:00 GMT
Josh Elser created PHOENIX-4004:
-----------------------------------

             Summary: Assorted improvements to reduce garbage in mutable index codepath
                 Key: PHOENIX-4004
                 URL: https://issues.apache.org/jira/browse/PHOENIX-4004
             Project: Phoenix
          Issue Type: Improvement
            Reporter: Josh Elser
            Assignee: Josh Elser
            Priority: Minor
             Fix For: 4.12.0


During some $dayjob testing, I found a couple of places where we were unnecessarily creating
garbage in the RS. When "forward-porting" this change, most of the areas were already cleaned
up but there are a few that still apply.

* ArrayList initial sizing
* Avoid indirection of the (single-threaded) ExecutorService in IndexBuildManager (just pure
overhead)
* Some unnecessary KeyValue copies and an array copy (an avoidance of deprecated HBase API)
* Avoid extra {{System.arraycopy}} calls in CoveredColumnIndexCodec via the {{ArrayUtils.addAll}}
call



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