sfc-gh-rspitzer commented on code in PR #12824:
URL: https://github.com/apache/iceberg/pull/12824#discussion_r2087441627
##########
core/src/main/java/org/apache/iceberg/actions/BinPackRewriteFilePlanner.java:
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@@ -199,30 +214,48 @@ protected long defaultTargetFileSize() {
public FileRewritePlan<FileGroupInfo, FileScanTask, DataFile,
RewriteFileGroup> plan() {
StructLikeMap<List<List<FileScanTask>>> plan = planFileGroups();
RewriteExecutionContext ctx = new RewriteExecutionContext();
- Stream<RewriteFileGroup> groups =
- plan.entrySet().stream()
- .filter(e -> !e.getValue().isEmpty())
- .flatMap(
- e -> {
- StructLike partition = e.getKey();
- List<List<FileScanTask>> scanGroups = e.getValue();
- return scanGroups.stream()
- .map(
- tasks -> {
- long inputSize = inputSize(tasks);
- return newRewriteGroup(
- ctx,
- partition,
- tasks,
- inputSplitSize(inputSize),
- expectedOutputFiles(inputSize));
- });
- })
- .sorted(RewriteFileGroup.comparator(rewriteJobOrder));
+ List<RewriteFileGroup> selectedFileGroups = new ArrayList<>();
+ AtomicInteger fileCountRunner = new AtomicInteger();
+ plan.entrySet().stream()
Review Comment:
I think that's fair @pvary we probably can't fix the "total" memory solution
but we will at least get read of a lot of object creation and make others much
shorter lived.
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