[jira] [Commented] (PARQUET-1169) Segment fault when using NextBatch of parquet::arrow::ColumnReader in parquet-cpp

["Wes McKinney (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PARQUET-1169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16279578#comment-16279578 ] 

Wes McKinney commented on PARQUET-1169:
---------------------------------------

You aren't checking the status codes for some of the Arrow functions. Try using a macro similar to {{ABORT_NOT_OK}} (but prints the error message to {{std::cout}}) to see the error message:

https://github.com/apache/arrow/blob/fc4e2c36d2c56a8bd5d1ab17eeb406826924d3e5/cpp/src/arrow/test-util.h#L68

> Segment fault when using NextBatch of parquet::arrow::ColumnReader in parquet-cpp
> ---------------------------------------------------------------------------------
>
>                 Key: PARQUET-1169
>                 URL: https://issues.apache.org/jira/browse/PARQUET-1169
>             Project: Parquet
>          Issue Type: Bug
>          Components: parquet-cpp
>            Reporter: Fang Jian
>
> When I running the below code, I consistently get segment fault, not sure whether this is a bug or I did something wrong. Anyone here could help me take a look?
> {code:c++}
> #include <iostream>
> #include <string>
> #include "arrow/array.h"
> #include "arrow/io/file.h"
> #include "parquet/arrow/reader.h"
> using arrow::Array;
> using arrow::default_memory_pool;
> using arrow::io::FileMode;
> using arrow::io::MemoryMappedFile;
> using parquet::arrow::ColumnReader;
> using parquet::arrow::FileReader;
> using parquet::arrow::OpenFile;
> int main(int argc, char** argv) {
>   if (argc > 1) {
>     std::string file_name = argv[1];
>     std::shared_ptr<MemoryMappedFile> file;
>     MemoryMappedFile::Open(file_name, FileMode::READ, &file);
>     std::unique_ptr<FileReader> file_reader;
>     OpenFile(file, default_memory_pool(), &file_reader);
>     std::unique_ptr<ColumnReader> column_reader;
>     file_reader->GetColumn(0, &column_reader);
>     std::shared_ptr<Array> array1;
>     column_reader->NextBatch(1, &array1);
>     std::cout << "length " << array1->length() << std::endl;
>     std::shared_ptr<Array> array2;
>     // raise segment fault
>     column_reader->NextBatch(1, &array2);
>     std::cout << "length " << array2->length() << std::endl;
>   }
>   return 0;
> }
> {code}



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