Alessandro Solimando created CALCITE-7321:
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Summary: FilesTableFunction throws NumberFormatException on macOS
with GNU stat installed
Key: CALCITE-7321
URL: https://issues.apache.org/jira/browse/CALCITE-7321
Project: Calcite
Issue Type: Bug
Components: os-adapter
Affects Versions: 1.41.0
Reporter: Alessandro Solimando
Assignee: Alessandro Solimando
Fix For: 1.42.0
h3. Problem
Command generation assumes BSD stat on macOS in
[FilesTableFunction.java:121-143|https://github.com/apache/calcite/blob/935d6764258584b5c30f761042669d3a268bf44f/plus/src/main/java/org/apache/calcite/adapter/os/FilesTableFunction.java#L121-L143],
which breaks when GNU coreutils is installed via Homebrew.
The BSD stat format flags (-f) are not recognized by GNU stat, causing it to
output default text format.
The parser then attempts to convert descriptive text like " File: .",
resulting in this stack-trace:
{noformat}
java.lang.NumberFormatException: Character is neither a decimal digit number,
decimal point, nor "e" notation exponential mark.
at
org.apache.calcite.adapter.os.FilesTableFunction$1$1$1.field(FilesTableFunction.java:256){noformat}
h3. Solution
Detect which stat implementation is available at runtime using stat --version
(BSD stat does not support this flag), and adapt the format specifiers
accordingly
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