Github user cloud-fan commented on the issue:
https://github.com/apache/spark/pull/21481
thanks, merging to master/2.3!
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Github user kiszk commented on the issue:
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@cloud-fan addressed all of the possible integer overflows detected by
SpotBugs.
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Github user cloud-fan commented on the issue:
https://github.com/apache/spark/pull/21481
@kiszk when you were running findBugs locally, did you find more overflow
bugs that are not present in this PR? Let's put all discovered overflow bugs in
this PR and have another PR to integrate
Github user kiszk commented on the issue:
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Thank you for your comment. I will create another PR for integrating
findBugs/SpotBugs into maven.
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Github user JoshRosen commented on the issue:
https://github.com/apache/spark/pull/21481
Let's merge this as-is and do the build improvements in a separate PR.
That's important because we may want to backport the overflow fix to
maintenance branches and may want to do so independent
Github user kiszk commented on the issue:
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Since I found an plug-in for maven, I will also include a patch to add
findBugs/SpotBugs into maven in this PR.
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Github user kiszk commented on the issue:
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Since it is Java bytecode analysis, it is available for Scala code, too.
In my quick test, findBugs overlooked a possible overflow. On the other
hand, findBugs found another redundant null check.
Github user cloud-fan commented on the issue:
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is findBugs available for scala code as well?
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Github user kiszk commented on the issue:
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@JoshRosen @cloud-fan
Here is an update.
I have just apply `findBugs` to `OffHeapColumnVector.java` and
`UnsafeArrayData.java`.
In `OffHeapColumnVector.java`, most of possible
Github user kiszk commented on the issue:
https://github.com/apache/spark/pull/21481
Good questions.
For 2, at first I found one of these issues when I looked at a file. Then,
I ran `grep` command with `long .*=.*\*` and `long .*=.*\+` in `.java` file.
Then, I picked them up
Github user cloud-fan commented on the issue:
https://github.com/apache/spark/pull/21481
+1 on @JoshRosen 's ideas.
I've already seen several overflow fixes from @kiszk , it will be good if
we have some tools to check it, even we need to run the tool manually. One idea
may
Github user JoshRosen commented on the issue:
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Hey @kiszk, thanks for tracking this down. This change looks good to me.
I have a couple of questions, mostly aimed towards figuring out how we can
categorically solve this problem:
Github user kiszk commented on the issue:
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cc @cloud-fan
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cc @ueshin @hvanhovell
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