GitHub user hhbyyh opened a pull request:
https://github.com/apache/spark/pull/11078
[SPARK_13196] [MLlib] Optimize the iterator in Word2Vec to reduce the max
memory consumption
jira: https://issues.apache.org/jira/browse/SPARK-13196
code optimization.
1. remove the unnecessary Option and flatten.
2. avoid the extra space caused by the ++ operation.
This would reduce the maximum memory word2vec requires, thus to support
larger dataset or vocabulary for limited memory.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hhbyyh/spark w2vIterator
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/11078.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 #11078
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commit 0e43738b71bbe405800ae2dd38b8fd6a85588c44
Author: Yuhao Yang <[email protected]>
Date: 2016-02-04T10:35:09Z
replace option and flatten
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