SPARK-3803 [MLLIB] ArrayIndexOutOfBoundsException found in executing computePrincipalComponents #2801
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…icit error when Gramian computation will fail due to negative array size; warn about large result when computing Gramian too
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QA tests have started for PR 2801 at commit
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QA tests have finished for PR 2801 at commit
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Test PASSed. |
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LGTM. Merged into master. Thanks! |
MaxGekk
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Jul 7, 2018
I added a recommendation for increasing broadcast timeout. This sentence is added to existing error message:
```
You can increase the timeout for broadcasts via ${SQLConf.BROADCAST_TIMEOUT.key}
```
Author: Maxim Gekk <maxim.gekk@databricks.com>
Closes apache#2801 from MaxGekk/broadcast-error-message.
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Avoid overflow in computing n*(n+1)/2 as much as possible; throw explicit error when Gramian computation will fail due to negative array size; warn about large result when computing Gramian too