[Flight][Python] segfault in simple server implementation

[asfimport]

Python segfaults if you implement a Flight server that returns a data stream but does not keep a reference to the underlying data source (the Table, RecordBatch, etc). The Flight bindings themselves do not keep a reference to the object, so the server will segfault as the memory has been reclaimed.

Reporter: David Li / @lidavidm
Assignee: David Li / @lidavidm

Related issues:

• [Python] Add Flight unit tests (supercedes)

PRs and other links:

• GitHub Pull Request #3834

_{Note: This issue was originally created as ARROW-4796. Please see the migration documentation for further details.}

[asfimport]

David Li / @lidavidm:
I'll put up a fix shortly.

[asfimport]

Wes McKinney / @wesm:
Issue resolved by pull request 3834
#3834