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From "Bill Farner" <wfar...@apache.org>
Subject Re: Review Request 31248: Export stats for source and reason for LOST tasks, and status delivery latency.
Date Mon, 23 Feb 2015 18:53:46 GMT


> On Feb. 23, 2015, 6:22 p.m., Maxim Khutornenko wrote:
> > src/main/java/org/apache/aurora/scheduler/mesos/MesosSchedulerImpl.java, lines 199-201
> > <https://reviews.apache.org/r/31248/diff/5/?file=871734#file871734line199>
> >
> >     Well, I think this is actually worse than it was. In case there is no StringBuilder
concatenation active in JVM, this is still producing unnecessary string objects. However,
in the opposite case, there will be muiltiple StringBuilder objects and heap churn may be
even worse. 
> >     
> >     Don't want to block review on this anymore but please, convert everything to
a single StringBuilder without concatenation or revert back to concatenation to hopefully
take advantage of an auto generated StringBuilder.

Sorry, that was hasty, and i agree an odd use of StringBuilder.  I will update to remove concatenation.


- Bill


-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/31248/#review73608
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On Feb. 21, 2015, 6:33 p.m., Bill Farner wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/31248/
> -----------------------------------------------------------
> 
> (Updated Feb. 21, 2015, 6:33 p.m.)
> 
> 
> Review request for Aurora, Joshua Cohen and Maxim Khutornenko.
> 
> 
> Bugs: AURORA-1028
>     https://issues.apache.org/jira/browse/AURORA-1028
> 
> 
> Repository: aurora
> 
> 
> Description
> -------
> 
> Export stats for source and reason for LOST tasks, and status delivery latency.
> 
> 
> Diffs
> -----
> 
>   src/main/java/org/apache/aurora/scheduler/events/PubsubEvent.java 1d8f0128732756db74576ee669f6a2718fecc105

>   src/main/java/org/apache/aurora/scheduler/mesos/MesosSchedulerImpl.java ffc30bb548706df7bec9e1502242890e9b5eb942

>   src/main/java/org/apache/aurora/scheduler/mesos/SchedulerDriverModule.java 59ad9e65589c421cefb76f265446fa2885e6198c

>   src/main/java/org/apache/aurora/scheduler/mesos/TaskStatusStats.java PRE-CREATION 
>   src/test/java/org/apache/aurora/scheduler/mesos/MesosSchedulerImplTest.java d02c6b32841d5d39c5780e7a044079a38729effb

>   src/test/java/org/apache/aurora/scheduler/mesos/TaskStatusStatsTest.java PRE-CREATION

> 
> Diff: https://reviews.apache.org/r/31248/diff/
> 
> 
> Testing
> -------
> 
> 
> Thanks,
> 
> Bill Farner
> 
>


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