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https://issues.apache.org/jira/browse/PIG-3259?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Prashant Kommireddi updated PIG-3259:
-------------------------------------
Description:
These conversions can be performing better. If the input is not numeric
(1234abcd) the code calls Double.valueOf(String) regardless before finally
returning null. Any script that inadvertently (user's mistake or not) tries to
cast non-numeric column to int or long would result in many wasteful calls.
We can avoid this and only handle the cases we find the input to be a decimal
number (1234.56) and return null otherwise even before trying
Double.valueOf(String).
was:
These conversions can be performing better. If the input is not numeric
(1234abcd) the code calls Double.valueOf(String) regardless before finally
returning null. Any script that inadvertently (user's mistake or not) tries to
cast alpha-numeric column to int or long would result in many wasteful calls.
We can avoid this and only handle the cases we find the input to be a decimal
number (1234.56) and return null otherwise even before trying
Double.valueOf(String).
> Optimize byte to Long/Integer conversions
> -----------------------------------------
>
> Key: PIG-3259
> URL: https://issues.apache.org/jira/browse/PIG-3259
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.11, 0.11.1
> Reporter: Prashant Kommireddi
> Fix For: 0.12
>
> Attachments: byteToLong.xlsx
>
>
> These conversions can be performing better. If the input is not numeric
> (1234abcd) the code calls Double.valueOf(String) regardless before finally
> returning null. Any script that inadvertently (user's mistake or not) tries
> to cast non-numeric column to int or long would result in many wasteful
> calls.
> We can avoid this and only handle the cases we find the input to be a decimal
> number (1234.56) and return null otherwise even before trying
> Double.valueOf(String).
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