GH-51229: [Python] Raise instead of crashing on unopened resize - #51246

GH-51229: [Python] Raise instead of crashing on unopened resize#51246

1fanwang wants to merge 2 commits into

apache:mainapache/arrow:mainfrom

1fanwang:1fannnw/gh-51229-memory-mapped-file-resize1fanwang/arrow:1fannnw/gh-51229-memory-mapped-file-resizeCopy head branch name to clipboard