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https://issues.apache.org/jira/browse/PIG-784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13126043#comment-13126043
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Thejas M Nair commented on PIG-784:
-----------------------------------
By default the warnings are aggregated. To turn off aggregation, you need to
have -w as command line option, or set the property aggregate.warning to false.
> PigStorage() - need ability to turn off "Attempt to access field" warnings
> ---------------------------------------------------------------------------
>
> Key: PIG-784
> URL: https://issues.apache.org/jira/browse/PIG-784
> Project: Pig
> Issue Type: Improvement
> Affects Versions: 0.2.0
> Reporter: David Ciemiewicz
>
> I want an option to PigStorage() for LOAD which will allow me to turn off the
> "Attempt to access field" warnings.
> Something like:
> {code}
> define PigStorage PigStorage("warn_load_nonexistent_field=off");
> A = load 'mydata.txt' using PigStorage()
> as (col1: chararray, col2_optional: int, col3_optional: float);
> {code}
> or
> {code}
> A = load 'mydata.txt' using PigStorage("warn_load_nonexistent_field=0")
> as (col1: chararray, col2_optional: int, col3_optional: float);
> {code}
> If I have a very large data set with optional columns that are not populated
> (and have no tab separator), I'd like to just read the file as is and not
> generate the warnings.
> The warnings are problematic because the fill up the logging output and every
> System.out.println will generate slow down the overall processing.
> Especially if the data file being processed is missing one or more columns on
> every single row.
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