[jira] [Created] (ARROW-11463) Allow configuration of IpcWriterOptions 64Bit from PyArrow

["Leonard Lausen (Jira)" <ji...@apache.org>]

Leonard Lausen created ARROW-11463:
--------------------------------------

             Summary: Allow configuration of IpcWriterOptions 64Bit from PyArrow
                 Key: ARROW-11463
                 URL: https://issues.apache.org/jira/browse/ARROW-11463
             Project: Apache Arrow
          Issue Type: Task
          Components: Python
            Reporter: Leonard Lausen


For tables with many chunks (2M+ rows, 20k+ chunks), `pyarrow.Table.take` will be around 1000x slower compared to the `pyarrow.Table.take` on the table with combined chunks (1 chunk). Unfortunately, if such table contains large list data type, it's easy for the flattened table to contain more than 2**31 rows and serialization (eg for Plasma store) will fail due to `pyarrow.lib.ArrowCapacityError: Cannot write arrays larger than 2^31 - 1 in length`

I couldn't find a way to enable 64bit support for the serialization as called from Python (IpcWriteOptions in Python does not expose the CIpcWriteOptions 64 bit setting; further the Python serialization APIs do not allow specification of IpcWriteOptions)

I was able to serialize successfully after changing the default and rebuilding

```
modified   cpp/src/arrow/ipc/options.h
@@ -42,7 +42,7 @@ struct ARROW_EXPORT IpcWriteOptions {
   /// \brief If true, allow field lengths that don't fit in a signed 32-bit int.
   ///
   /// Some implementations may not be able to parse streams created with this option.
-  bool allow_64bit = false;
+  bool allow_64bit = true;
 
   /// \brief The maximum permitted schema nesting depth.
   int max_recursion_depth = kMaxNestingDepth;
```



--
This message was sent by Atlassian Jira
(v8.3.4#803005)