[jira] [Updated] (ARROW-5601) [gandiva] Error when projector with a string field

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-5601?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated ARROW-5601:
----------------------------------
    Labels: pull-request-available  (was: )

> [gandiva] Error when projector with a string field
> --------------------------------------------------
>
>                 Key: ARROW-5601
>                 URL: https://issues.apache.org/jira/browse/ARROW-5601
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++ - Gandiva
>    Affects Versions: 0.13.0
>         Environment: Ubuntu 16.04 x86_64
>            Reporter: Sun Chenggen
>            Assignee: Pindikura Ravindra
>            Priority: Major
>              Labels: pull-request-available
>   Original Estimate: 48h
>  Remaining Estimate: 48h
>
> when I try to select a string field by {{gandiva}} projector, it failed with errors.
> {code:python}
> import pandas as pd
> import pyarrow as pa
> from pyarrow import gandiva
> a = pd.DataFrame({'col1': ["asdf", "abc"]})
> tb = pa.Table.from_pandas(a)
> teb = gandiva.TreeExprBuilder()
> col1 = tb.schema[0]
> node1 = teb.make_field(col1)
> exp1 = teb.make_expression(node1, col1)
> gandiva.make_projector(tb.schema, [exp1], pa.default_memory_pool())
> {code}
> Run the code above, it crashs with error like this:
> {code:bash}
> python: ../lib/IR/Instructions.cpp:1202: void llvm::StoreInst::AssertOK(): Assertion `getOperand(0)->getType() == cast<PointerType>(getOperand(1)->getType())->getElementType() && "Ptr must be a pointer to Val type!"' failed. Aborted
> {code}



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