GitHub user heary-cao opened a pull request:
https://github.com/apache/spark/pull/23244
[SPARK-26289][CORE]cleanup enablePerfMetrics parameter from BytesToBytesMap
## What changes were proposed in this pull request?
`enablePerfMetrics `was originally designed in `BytesToBytesMap `to control
`getNumHashCollisions getTimeSpentResizingNs getAverageProbesPerLookup`.
However, as the Spark version gradual progress. this parameter is only
used for `getAverageProbesPerLookup ` and always given to true when using
`BytesToBytesMap`.
it is also dangerous to determine whether `getAverageProbesPerLookup
`opens and throws an `IllegalStateException `exception.
So this pr will be remove `enablePerfMetrics `parameter from
`BytesToBytesMap`. thanks.
## How was this patch tested?
the existed test cases.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/heary-cao/spark enablePerfMetrics
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/23244.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 #23244
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commit 16d30eca343b401a4402953652d1e8e8e26fb0bb
Author: caoxuewen <cao.xuewen@...>
Date: 2018-12-06T07:54:25Z
cleanup enablePerfMetrics parameter from BytesToBytesMap
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