GitHub user wangmiao1981 opened a pull request:
https://github.com/apache/spark/pull/15639
[Core]add defensive check for zipWithIndex
## What changes were proposed in this pull request?
(Please fill in changes proposed in this fix)
`Utils.getIteratorZipWithIndex` was added to deal with number of records >
2147483647 in one partition.
method `getIteratorZipWithIndex` accepts `startIndex` <=0, which leads to
negative index.
This PR just adds a defensive check on `startIndex` to make sure it is > 0.
## How was this patch tested?
Add a new unit test.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/wangmiao1981/spark zip
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15639.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 #15639
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commit 1d3d4fec775b05bb4b4d8de225cf500ac661a2cd
Author: Miao Wang <miaowang@miaos-macbook-pro.local>
Date: 2016-10-26T05:16:04Z
add defensive check for zipWithIndex
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