[
https://issues.apache.org/jira/browse/PHOENIX-4004?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16078620#comment-16078620
]
Josh Elser commented on PHOENIX-4004:
-------------------------------------
Forgot to add, the total "benefit" I was able to observe from this change
(including things that are already fixed in Apache) on a wimpy 5-node cluster
with YCSB was a 5-10% increase in throughput for an 80/20 write/read workload
with two secondary indices.
> 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
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
