GitHub user hhbyyh opened a pull request:
https://github.com/apache/spark/pull/7871
[SPARK-9140][MLlib] Replace TimeTracker by Stopwatch
jira: https://issues.apache.org/jira/browse/SPARK-9140
We can replace TImeTracker in tree implementations by Stopwatch. The
initial PR could use local stopwatches only.
With the current API of MultiStopwatch:
1. The typical invoking sequence is not reenterable (causes exception)
```
multiTimer.addLocal("total")
multiTimer("total").start()
...
multiTimer("total").stop()
```
2. Maybe we can have a new API combining
```
multiTimer.addLocal("total")
multiTimer("total").start()
```
just for simplification.
next: Shall we keep TimeTracker ?
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hhbyyh/spark stopwatch
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/7871.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #7871
----
commit 60366ac324ebec3f072906d76c16ead3aafc3fce
Author: Yuhao Yang <[email protected]>
Date: 2015-08-02T16:25:30Z
draft
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