GitHub user zsxwing opened a pull request:
https://github.com/apache/spark/pull/7996
[SPARK-9467][SQL]Add SQLMetric to specialize accumulators to avoid boxing
This PR adds SQLMetric/SQLMetricParam/SQLMetricValue to specialize
accumulators to avoid boxing. All SQL metrics should use these classes rather
than `Accumulator`.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zsxwing/spark sql-accu
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/7996.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 #7996
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commit 42f50c30be0bfb17a3af37948bb06136acd6983c
Author: zsxwing <[email protected]>
Date: 2015-08-06T15:39:52Z
Add SQLMetric to specialize accumulators to avoid boxing
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