apache/iceberg
Ver no GitHubCore: Stream DV Puffin rewrite in RewriteTablePathUtil to reduce memory pressure
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#15.924 aberto em 9 de abr. de 2026
coregood first issueimprovement
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Description
Feature Request / Improvement
Description
RewriteTablePathUtil.rewriteDVFile currently rewrites deletion vector (DV) Puffin files by reading all rewritten blobs into an in-memory list before writing them out, which can create unnecessary memory pressure when rewriting larger DV files or files with many blobs.
Suggested improvement
Refactor RewriteTablePathUtil.rewriteDVFile to stream rewritten blobs directly to the output PuffinWriter while iterating through the source blobs, instead of collecting all rewritten blobs into a temporary list first.
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