What does mean the error "mapper.tolong can only be applied to a single value"?

[Frédéric Duwez]

When executing the following line:

[ $lgts mapper.tolong 0 0 0 ] MAP 'lgts' STORE

on a list of gts countaining values like :

[1582089420000000,653.8181818181819],[1582089480000000,764.2738095238095]

I get this error message:

Exception at 'MAP' in section '[Line #376]' (mapper.tolong can only be applied to a single value.))

I have no clue what it does mean.

Could somebody help me?

Regards

[Jean-Charles Vialatte]

Have you checked if any of the gts is bucketized and has an empty bucket ?

If it is the case, the mapper will call mapper.tolong on a bucket with no value. That could be the reason why you see this error.

A fix would be to UNBUCKETIZE your gts.

[Frédéric Duwez]

Thank you Jean-Charles, this is exactly the problem and the solution.

I had previously removed buckets with zeros to avoid NaN after an op.div APPLY.

Maybe this could be documented in the MAP entry?

Regards