perf(reader): Optionally pass data file size to reader through FileScanTasks to avoid stat() call#2175
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mbutrovich wants to merge 4 commits intoapache:mainfrom
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perf(reader): Optionally pass data file size to reader through FileScanTasks to avoid stat() call#2175mbutrovich wants to merge 4 commits intoapache:mainfrom
FileScanTasks to avoid stat() call#2175mbutrovich wants to merge 4 commits intoapache:mainfrom
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FileScanTasks to avoid stat() callFileScanTasks to avoid stat() call
blackmwk
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Feb 25, 2026
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blackmwk
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Thanks @mbutrovich for this pr!
| let delete_filter_rx = | ||
| delete_file_loader.load_deletes(&task.deletes, Arc::clone(&task.schema)); | ||
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| let file_size = if task.file_size_in_bytes > 0 { |
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In what case the file_size_in_bytes is not larger than 0?
| ) -> Vec<Option<String>> { | ||
| let tasks = Box::pin(futures::stream::iter( | ||
| vec![Ok(FileScanTask { | ||
| file_size_in_bytes: 0, |
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Though they are tests, I still think it's better to have a positive number .
| self.file_io.clone(), | ||
| false, | ||
| None, | ||
| None, |
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I think we should still fetch file size here.
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| let file_scan_tasks = vec![ | ||
| FileScanTask { | ||
| file_size_in_bytes: 0, |
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It's odd to see 0 size file.
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Which issue does this PR close?
stat()is taking over 17% of the CPU time increate_record_batch_stream_builder:What changes are included in this PR?
FileScanTask. Iceberg Java does this by wrapping a reference to aDataFilein itsFileScanTask. In this case we're just cherry-picking some fields until we decide we need more.Are these changes tested?
Existing tests.