[ARROW-1647] [Plasma] Potential bug when reading/writing messages.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.8.0
• Component/s: C++ - Plasma
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/17656
• Assignee: Robert Nishihara
• Reporter: Robert Nishihara
• Created: 05/Oct/17 05:46
• Updated: 11/Jan/23 07:16
• Resolved: 05/Oct/17 06:14

Description

When we write the "length" field, it is an int64_t. See https://github.com/apache/arrow/blob/dc129d60fbffbf3a5b71b1f7987f7dab948b3d61/cpp/src/plasma/io.cc#L63.

However, when we read the "length" field, it is a size_t. See https://github.com/apache/arrow/blob/dc129d60fbffbf3a5b71b1f7987f7dab948b3d61/cpp/src/plasma/io.cc#L98.

I'm not sure if this is a bug, but it looks like it might be. And I suspect there is an issue somewhere in this area because a couple Ray users on non-standard platforms have reported issues with a check failure at https://github.com/apache/arrow/blob/dc129d60fbffbf3a5b71b1f7987f7dab948b3d61/cpp/src/plasma/io.cc#L94.

See https://github.com/ray-project/ray/issues/1008.

Issue Links

• links to: GitHub Pull Request #1172