Robert Nishihara created ARROW-1647:
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Summary: [Plasma] Potential bug when reading/writing messages.
Key: ARROW-1647
URL: https://issues.apache.org/jira/browse/ARROW-1647
Project: Apache Arrow
Issue Type: Bug
Components: Plasma (C++)
Reporter: Robert Nishihara
When we write the "length" field, it is an {code}int64_t{code}. See
https://github.com/apache/arrow/blob/dc129d60fbffbf3a5b71b1f7987f7dab948b3d61/cpp/src/plasma/io.cc#L63.
However, when we read the "length" field, it is a {code}size_t{code}. 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.
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