coderfender commented on code in PR #12824:
URL: https://github.com/apache/iceberg/pull/12824#discussion_r2082637481
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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:
@pvary , I pushed a commit which moved the pruning logic rught after we get
fileScanTasks from the scan API . The one good thing with this is that the
implementation is easier than the above approach and the other thing to note is
the file scan tasks getting pruned are always guaranteed to be random (since we
are pruning before grouping the partitions) . Let me know if you think this is
a clearer approach than the previous one or other wise
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